achieving the industry’s highest for more information on ......ansi c37.20.1 nema sg3 ansi c37.51...

Publication No. B.44A.01.S.EMay, 1998Printed in U.S.A. / CMS 2264

Cutler-Hammer Pittsburgh, Pennsylvania

Cutler-Hammer, a part of Eaton Corporation, is a leader in the developmentand manufacturing of power distribution equipment, electrical control products,and advanced industrial automation solutions.

For more information on Cutler-Hammer products and services,call 1-800-525-2000 or 1-732-417-5660, or visit our website atwww.cutlerhammer.eaton.com

MAGNUM DSLOW VOLTAGE POWER CIRCUIT BREAKERS

AND METAL-ENCLOSED SWITCHGEAR

Achieving the Industry’s HighestANSI Interruption and Short Time Ratings

In a New Compact Design

B44

A01

SE

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Magnum DS

If Your System’s Not Up…It’s Down

In today’s electrical distribution systems,the demand for higher standards of pro-tection and coordination are driven bydemands for a more reliable, more accuratedistribution system. A distribution systemthat eliminates unnecessary trips, isolatesa fault to ensure minimum downtime, andprovides system information to assist theuser to better manage the system.

Cutler-Hammer has developed a completefamily of microprocessor-based devices tomeet the demands of users and designers ofelectrical distribution systems. Our DigitripOPTIM Programmable and Digitrip RMSElectronic Trip Units offer circuit protec-tion, information, integral testing, remotecommunications, and energy monitoringfunctions for low voltage breakers…whilea Digitrip 1150 Programmable Trip Unit hasbeen engineered exclusively for MagnumDS Breakers.

Power for Productivity

Energy costs are rising an average eight to10 percent per year…maintenance andengineering staffs are trying to do morewith less…and electrical power quality isdecreasing. These situations are providingincreased pressure on electrical staff per-sonnel to improve quality.

A solution is power distribution monitor-ing because it provides information fromthe utility substation all the way down to afractional HP motor…quickly and reliably,empowering maintenance and engineer-ing to take control of the distribution system.Data on energy consumption, maintenancerequirements, and troubleshooting are attheir fingertips, providing savings in bothtime and money. The Cutler-HammerIMPACC System uniquely interrogates theelectrical system for necessary firsthandinformation and displays it with easy-to-understand software.

Magnum DS 19

System Uptimeand Reliability

Information andSystems Integration

and retrofit services for existing equipment.A result is information that is used to assessthe on-line performance of an installedpower system, followed by intelligent actionto keep the system on-line and productive.Cutler-Hammer Engineering Services’engineers and technicians are supportedby 14 regional operation centers and over50 satellite locations in the United Statesand Canada.

More Information

Visit our Website

Magnum DS is accessible on-linethrough the Cutler-Hammer internetsite. Visit the Cutler-Hammer homepageat www.cutlerhammer.eaton.com andclick on Magnum DS.

Magnum DS Literature

Additional product literature is avail-able from your local Cutler-Hammersales office.

Magnum DS SwitchgearProduct Aid (PA.44A.01.S.E) –A two-page presentation of inno-vative switchgear design fea-tures, benefits, and ratings.

Magnum DS Breaker ProductAid (PA.22F.01.S.E) –␣Bulletizedtwo-page format, includingunique breaker features, ratings,and dimensional data.

Magnum DS Metal-Enclosed LowVoltage Switchgear TechnicalData (TD.44A.01.T.E) – An in-depth presentation of switch-gear ratings, application, andlayout information.

Magnum DS Product Guide(PG.22F.01.S.E) – Detailed mate-rial on Magnum DS functions,technology, ratings, dimensions,and ordering information.

Cutler-Hammer Sales Offices

For a detailed presentation on the addi-tional benefits and cost savings thatMagnum DS can create for you, calltoll free 1 800-525-2000 or 732-417-5660for the location and phone number ofyour nearest Cutler-Hammer salesoffice or distributor.

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A Key to Distribution System Reliability

Nonlinear loads, momentary voltage tran-sients, and surges can cause significantpower quality problems in both industrialand commercial facilities. Many industrialprocesses and solid-state devices are ex-tremely sensitive to power qualityproblems…and manufacturing operationscan be disrupted by voltage or frequencyvariances. Poor power quality can result inexpensive downtime and costly equipmentfailures. Computer data centers are verysensitive and minor power disturbancescan result in downtime and significantoperational problems.

The negative effect of harmonics can re-sult in overheated neutrals in panelboards,switchboards, overheated transformers,and nuisance tripping of breakers andadjustable frequency drives.

Energy: If You Can’t Measure It,You Can’t Manage It

Energy consumption is a major operationscost for any building and a significant partof every tenant’s rent. Electric utilities, re-acting to increased demands, have devel-oped programs that provide cost reductionsfor energy conservation…but penalize forusage during peak demand hours. Addi-tionally, re-regulation of the utility industryis creating new opportunities to save energyand significantly reduce energy expenses.

Tenants have the option to decreaseconsumption if they can monitor energyusage. By reducing their consumption, peakdemand charges (often a substantial por-tion of a building’s electric bill) will belowered, thus making the building moreattractive to prospective tenants.

Decreases in energy consumption are alsoimportant in manufacturing facility depart-ments or “lines.” Many manufacturingcompanies are now placing the responsi-bility for energy budgeting at the line fore-man level…and this includes calculatingenergy costs just the same as for labor,materials, and other direct expenses.

18 Magnum DS Magnum DS 3

Unique

Technology

Advancements

and Innovative

Features

Our Customers

Asked For

For Greater Reliability, Increased Productivity,and Significant Cost Savings...Cutler-Hammer has the Solutions

Cutler-Hammer Power for Productivity

For nearly 70 years Cutler-Hammer has designed, engineered, and manufac-tured low voltage switchgear, power circuit breakers, and trip units. Our productinnovations have continually set the standard for quality and reliability, andrepresent the largest installed base of ANSI low voltage switchgear.

As a result of our extensive experience, we’ve learned that low voltage switch-gear requirements constantly change. System designers continually demandincreased performance, necessitating innovative low voltage switchgear solu-tions that provide higher ratings in less space, a rugged structure, enhancedsafety, and easier maintenance…plus the increasingly important capabilities ofcommunications and power quality monitoring and measuring.

Anticipating future electrical distribution system design requirements andindustry trends, a dedicated team of Cutler-Hammer engineers and scientists

combined their switchgear and power breaker expertise with input from customer focus groupsprovided during the equipment design phase. The result is the next generation of low voltageswitchgear…the revolutionary Magnum DS!

Higher Ratings, Increased Strength, and Expanded Capabilities…in Less Space

We designed Magnum DS Switchgear to be structurally stronger while providing greaterinterrupting and withstand ratings in less space than any other ANSI switchgear. Increasedratings in less space provide opportunities to design more rugged electrical distributionsystems that can handle larger available fault currents while eliminating the need for limitersin most instances and providing for better coordination with downstream devices.

We also included capabilities for our customers to utilize Cutler-Hammer industry-leadingcommunications and power quality measurement technologies.

■ Highest Interruption and Short Time (Withstand) Ratings. Magnum DS Breakers providethe industry’s highest ANSI ratings available without current limiters in a physicallysmaller size.

■ A New Through-the-Door Design. All Magnum DS Breaker controls, indicators, and thetrip unit are visible and can be safely accessed without opening the compartment door.

■ Smaller Size. Magnum DS Breakers includeseveral unique technology breakthroughs makingthem the industry’s physically smallest ANSIpower breakers.

■ A New Family of Trip Units. A full range ofDigitrip® RMS Electronic and Programmable TripUnits has been developed to provide customerswith a choice of expanded protection, information,power quality measurement, and communicationcapabilities to meet specific requirements.

■ Only Two Structure Widths. 22- and 44-inch widths.■ Unique Wireway. A unique 4-inch wireway

is located on the side of the structure for quickand safe wiring.

In today’s sophisticated

distribution systems, providing

power requires more than just

meeting minimum standards.

It necessitates implementation

of solutions that range from

efficient distribution to

coordination to power quality

to energy management to

communications! The end result

is the production of cost-effective,

high quality products.

Power Quality Energy Management

Magnum DS

Switchgear:

The Next

Generation

from the

Industry Leader

in ANSI Low

Voltage

Switchgear!

Cutler-Hammer…A Leading Provider of

Electrical Power Distribution Solutions

Cutler-Hammer Engineering Services

Enhancing Existing Equipment Reliability

Increased system loads and normal equip-ment wear can alter performance charac-teristics and introduce unexpected line vari-ables. Cutler-Hammer Engineering Servicesprovides a solution with skilled engineersand technicians that conduct power qualitysite surveys, and monitoring and evaluationstudies in addition to providing maintenance

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Magnum DS


The Switchgear IMPACC Communications

Magnum DS

Highly Reliable, Comprehensive Communicationsthat will Improve Your Operating Efficiency

Your main objective is to produce a cost-effective,high quality product or service. Several things standin your way – unexpected equipment downtime,energy costs, reduced maintenance personnel, tighterbudgets, and limited capital or cash flow. Downtimeor power outage costs range from a few thousand tohundreds of thousands of dollars per hour in lostproduction and related costs.

How Can You Excel in this Environment?

By obtaining information and making it available inreal time to the people who need to have it…providedcost-effectively in a simple format that each personcan understand and utilize. You can obtain this infor-mation from your electrical distribution system with aCutler-Hammer IMPACC System.

With Magnum DS Switchgear, for example, a mastercontrol unit is used to communicate with the breaker’sDigitrip RMS 1150 Trip Unit, and other IQ devices suchas an IQ Analyzer and IQ DP-4000. The master controlunit may be a personal computer, an existing buildingmanagement system, a programmable logic control-ler, or a distributed control system.

Secondary wiring points are lo-cated in the top front of thebreaker cell, easily accessed viaa separate door without expo-sure to the power cables.

E-TRENDE-BILL

Meets All Standards…Seismically Qualified

Magnum DS Switchgear is built andtested to the following standards:

■ ANSI C37.20.1 ■ NEMA SG3■ ANSI C37.51 ■ NEMA SG5■ UL 1558 ■ CSA

Magnum DS Switchgear and CircuitBreakers are manufactured and as-sembled in ISO certified facilities.

The switchgear has been seismicallyqualified and exceeds requirements ofthe Uniform Building Code (UBC) andCalifornia Building Code (CBC).

Two Structure Widths ProvideGreater Capacity in Less Space

Cutler-Hammer engineered MagnumDS Switchgear in two space-savingstructure widths: 22-inches wide for800-3200A breaker frames and 44-inches wide for 4000-5000A breakerframes. Magnum DS Switchgear pro-vides opportunities for more circuitbreakers in less space than any otherANSI switchgear.

All breakers can be padlocked tosecure the breaker in all threepositions. An optional key inter-lock (not shown) can also securethe breaker in each position.

The heavy duty structure includesslots in the frame bottom makingit easier to move the assemblyusing a prybar.

The isolated secondary wirewayis uniquely located at the side ofthe structure, providing for topor bottom customer cell wiringwithout removing the breaker.

UL STANDARDS

Manufactured in an

ANSI

ISOFacility

CERTIFIED

IMPACC Software

IMPACC features a suite of client-server softwareproducts. Cutler-Hammer designed IMPACC specifi-cally as a complete electrical distribution systemmonitoring program that includes graphical one-lineand elevation displays, waveform analysis, trip curvecoordination, historical trending, event and alarmmanagement.

IMPACC was designed to communicate using anexisting or dedicated plant TCP/IP Ethernet network.Client software will operate on Microsoft WindowsNT and 95 operating systems. Server software oper-ates on Windows NT exclusively for maximum sys-tem reliability.

TRIP CURVE COORDINATIONWAVEFORM ANALYSIS

ELEVATION DISPLAYONE LINE DIAGRAM

E-Bill Software

E-Bill is an exclusive metering and analysis packagedesigned to gather data for improved allocation andmanagement of energy costs. As an enhancement toE-Bill, Cutler-Hammer offers E-Track, which providesthe capability to track industrial production energycosts on a per unit basis. For those users interestedin graphics, E-Trend software provides historical en-ergy usage information in a Windows-based graphi-cal display.

Through IMPACC, information communicated froma Magnum DS Breaker includes breaker status (open/close/trip), cause and magnitude of trip, meteringvalues, trip rating, and time stamping of events. Thebreaker itself can be remotely opened or closed.

Software Solutions to Match Your Needs

IMPACC software is available to meet specific re-quirements, providing for easy expansion as systemrequirements increase. This software ranges fromsimple monitoring tocomplex power man-agement applica-tions. IMPACC bringsintelligence to anydistribution systemfor energy monitor-ing, preventive main-tenance, expert sys-tem diagnostics, andcustom control appli-cations.

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Magnum DSMetering and Protection Products


A New Through-the-Door Design ProvidesUser-Friendly Operation and Optimum Safety

Through-the-door design provides clear visual andphysical access to the trip unit and all breaker controlsand indicators…including open and close buttons,the open/close indicating flag, the charging handle,breaker interlock, and the spring charge/dischargeflag. Even breaker levering is accomplished with thebreaker compartment door closed.

For safety and security, the breaker compartmentprovides three breaker positions with the door closed:connect, test, and disconnect.

Extension rails can be padlocked to prevent a breakerfrom being inserted into a cell, a requirement whenmaintenance is being performed. This helps assurethat no one can install a breaker and energize a circuiton which a person may be working.

Unique Secondary Contact PlacementFacilitates Wiring and Maintenance

Secondary wiring points are located in the top frontportion of each cell. A separate door covers the con-tacts so an operator can safely access them withoutopening the breaker compartment door. Customercontact points are dedicated to the customer’s inter-face meaning they are free from factory connections.

The secondary terminals have standard finger-proofhinged covers, providing safety by protecting againstaccidental contact with live secondary contacts. Cov-ers are hinged for making connections and include asmall hole for circuit testing using a probe.

Each secondary contact point is dedicated to a spe-cific function, allowing standardized wiring diagramsand true electrical interchangeability of common sizebreakers. Standard wiring points help improve qual-ity while reducing maintenance and inspection timefor customers.

Unique Vertical Bus Configuration ProvidesHighest Short Circuit and Withstand Ratings

The exclusive “U” shaped bar provides higher me-chanical strength that yields standard bus bracingratings of 100 kA…and optional 150 kA and 200 kA, thehighest short circuit rating in the industry. In addition,the bus has been tested for short circuit values of 85kA for a full 60 cycles.

Breaker Interface ModuleCentralized Local or Remote Monitoringand Information Display■ A communications center that monitors up to

50 Magnum DS Breakers equipped with DigitripRMS Electronic or Programmable Trip Units.

■ Can be used to program/test programmabletrip units.

■ Displays status, cause of trip, metered values(including current at time of trip), and energyinformation from each monitored device.

Factory Installed in Magnum DS Switchgear

Cutler-Hammer was the first manufacturer to cost-effectively bring microprocessor-based metering

IQ AnalyzerA Highly Accurate Meter that ProvidesEnergy Management and Power Quality Informationon an Easy-to-Read Display■ Meets rigid ANSI C12.16 Class 10 accuracy

specification for revenue meters.■ Waveform display includes the ability to detect

subcycle voltage disturbances, including voltagetransients and subcycle voltage interruptions.

■ Analysis screens provide detailed information ontrends, recorded events/alarms, harmonic distor-tion, and peak demands of current and power.

IQ DP-4000™

A Full Function Meter Idealfor Complete System Monitoring■ Direct reading metered values including watts, watt

demand, watthours, power factor, VA, VA hours,varhours, percentage THD, and load shedding.

■ Other direct reading metered values include ACamperes, AC voltage, and frequency.

■ Protection functions include phase loss, phaseunbalance, phase reversal, overvoltage, under-voltage, and delay.

Clipper Power SystemTransient Voltage Surge Suppression (TVSS)■ Protects sensitive equipment from the damaging

effects of high and low energy transients as wellas high frequency noise.

■ “Zero lead length” direct bus bar connectionprovides superior performance when comparedto conventional cable connected or nonintegratedsolutions, resulting in the lowest let-through volt-age in the industry.

■ Viewed parameters include current, voltage, power(watts, vars, and VA), energy, frequency, demand,power factor, percentage THD current, percentageTHD voltage, K Factor, CBEMA derating factor, crestfactor, discrete I/O status, and analog input reading.

■ Easy-to-use. All programming is completed bythe operator on the faceplate. A PC is not required.

■ Provides true rms sensing through the 50th har-monic and displays even and odd multiples ofthe fundamental current and voltage through the50th harmonic.

■ Nonvolatile memory.■ Optional IMPACC communications capability.

■ Replaces individually mounted and wired amme-ters, voltmeters, ammeter and voltmeter switches,wattmeters, varmeters, power factor meters, fre-quency meters, watthour and demand meters.

■ Nonvolatile memory.■ Optional IMPACC communications capability.■ True rms sensing.

and protection devices to the basic levels of plantoperation. These devices provide more usable infor-mation with greater accuracy.

■ Monitored locally at the switchgear or, for example,remotely at the maintenance engineer’s office.

■ Centralized alternative to individually mountedand wired ammeters and ammeter switches,watthour meters, circuit breaker position indicatinglights, alarm contacts, and test/programmers.

■ Monitors harmonic information.■ User friendly functions displayed by an LED

to indicate the selected function.■ Nonvolatile memory.■ Optional IMPACC communications capability.

■ Highest level of filtering in the industry (55 dB at100 Hz) removes common electrical disturbancesincluding high and low energy ringing transients.

■ Withstands over 3000 sequential Category C3shots (IEEE C62.41 1991) with less than a fivepercent change in clamping voltage.

■ Three levels of status monitoring.■ Standard disconnect.■ Meets UL 1449 requirements for surge suppression

devices and UL 1283 for noise filtration devices.

Safety is enhanced by thethrough-the-door design thatprovides for three breaker posi-tions with the door closed: con-nect, test, and disconnect. In thewithdrawn position above, thebreaker can be removed from thecell on integral extension rails.

CONNECT

TEST

DISCONNECT

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Magnum DS


The Assembly

Bus Compartment Can Be Isolatedby Optional Grounded Metal Barriers

Customer input recommended this feature as anoption since grounded metal barriers can interferewith thermal scans. When specified, these barriersserve to isolate the bus compartment from the cablecompartment, protecting against accidental contactwith the live vertical and cross bus, and reducing thepotential of objects falling into the bus compartment.

Shipping Split Terminal Blocks

Magnum DS Switchgear is delivered with plug-in ter-minal blocks at the shipping splits. They’re rated at 600volts, 40 amperes and accept a wire range of #22 to #8.

Our terminal blocks interlock mechanically withoutremoving the line or load connection, virtually elimi-nating the labor normally required to connect controlwire across shipping splits. Installation speed is in-creased and the potential of incorrect connections issubstantially reduced.

Cable lugs are mounted at a 45°angle to facilitate cable termi-nations with minimum bend-ing. Both compression andmechanical lugs are available.

Rear CompartmentOptionsGenerous rear compart-ment space is providedfor easy cable connec-tion, maintenance, andinspection. The rear com-partment is shown withoptions:

■1 Metal Barriers

■2 Hinged Door

■3 Space Heater

■4 Compression Lugs

3

2

1

1

Unique Control Wireway

The control wireway is located at the front of theswitchgear structure, on the side. Control circuits inall cells can be wired without removing any of thebreakers…and the wireway itself is safely barrieredfrom the power circuits.

An installer can wire the rear power circuits at thesame time another is wiring the control circuits, pro-viding a reduction in overall installation time.

Convenient Control Conduit Entry Points

We simplified access for both top and bottom controlconduit entry to help facilitate wiring and reduceinstallation time. Top access is through a cover that iseasily removed and punched by the customer toreceive the conduit. This design feature eliminatesmetal cutting on the assembly itself and the potentialof damaging metal shavings falling into the assembly.Bottom entry is made directly into the control wireway.

Top control conduit access is through an easily re-movable cover.

Magnum Digitrip Trip Units

The next generation of proven DigitripRMS Trip Units is available exclu-sively on Magnum DS Breakers. Thesetrue rms sensing trip units provideaccurate coordination with the con-ductors and equipment the breaker isdesigned to protect.

➀ Less than 1200 amperes. In = Rating plug rating.Ir = LDPU setting.Is = Sensor rating.

➂ Must utilize NT-basedIMPACC software to enablecommunications.

➁ Cause of trip – L, S, I, G,and making current release.

TRIP UNIT TYPE DIGITRIP 220 DIGITRIP 520 DIGITRIP 520M DIGITRIP 1150Ampere Range (16) 200A-5000A 200A-5000A 200A-5000A 200A-5000AInterrupting Rating at 480V 42 through 100kA 42 through 100kA 42 through 100kA 42 through 100kArms Sensing Yes Yes Yes YesPROTECTION AND COORDINATIONProtection Ordering Options LI LSI, LSIG 0LSI, LSIG, LSIA➀ 0LSI, LSIG, LSIA➀

Fixed Rating Plug (In) Yes Yes Yes YesOvertemperature Trip Yes Yes Yes Yes

Long Adjustable Rating Plug (In) No No No NoDelay Long Delay Setting Fixed 0.4-1.0 x (ln) 0.4-1.0 x (In) 0.4-1.0 x (In)Protection Long Delay Time I2t at 6 x Ir Fixed 2-24 Seconds 2-24 Seconds 2-24 Seconds

Long Delay Time I4t No No No 1-5 SecondsLong Delay Thermal Memory Yes Yes Yes YesHigh Load Alarm No No No 0.5-1.0 x Ir

Short Short Delay Pick-Up No 200-1000% M1 x (Ir) 200-1000% M1 x (Ir) 150% M1 x (Ir)Delay Short Delay Time I2t at 8 x Ir No 100-500 ms 100-500 ms 100-500 ms

Short Delay Time Flat No 100-500 ms 100-500 ms 100-500 msShort Delay Time ZSI No Yes Yes Yes

Instan- Instantaneous Pick-Up 200-1000% M1 x (In) 200-1000% M1 x (In) 200-1000% M1 x (In) 200-M1 x (In)taneous Making Current Release Yes Yes Yes YesProtection Instantaneous Override No No No No

Off Position Yes Yes Yes YesGround Ground Fault Alarm No No Yes 25% -1200A ULFault Ground Fault Pick-Up No 025-100% x (In)➀ 025-100% x (In)➀ 25% -1200A ULProtection Ground Fault Delay I2t at .625 x In No 100-500 ms 100-500 ms 100-500 ms

Ground Fault Delay Flat No 100-500 ms 100-500 ms 100-500 msGround Fault ZSI No Yes Yes YesGround Fault Thermal Memory No Yes Yes Yes

SYSTEM DIAGNOSTICSCause of Trip LEDs No 0Yes➁ 0Yes➁ 0Yes➁

Magnitude of Trip Information No No No YesRemote Signal Contacts No No Yes YesProgrammable Contacts No No No 2SYSTEM MONITORINGDigital Display No No 4 Char. LCD 24 Char. LEDCurrent (% FS Sensor) No No Yes (2%) Yes (1%)Voltage (%) L to L No No No Yes (1%)Power and Energy (%) No No No Yes (2%)Apparent Power kVA and Demand No No No YesReactive Power kVAR No No No YesPower Factor No No No YesCrest Factor No No No YesPower Quality – Harmonics No No No Yes% THD No No No YesSYSTEM COMMUNICATIONSIMPACC No No No 0Yes➂

Testing Method Test Set Test Set Test Set Integral and Test Set➃FIELD OPTIONSTrip Log (3 Events) No No No YesElectronic Operations Counter No No No YesTriplink No No No YesWaveform Capture No No No Yes

Instan-taneousProtection

GroundFaultProtection

LongDelayProtection

ShortDelayProtection4

➃ Tester for secondaryinjection.

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Magnum DSThe Trip Unit


Additional Innovative FeaturesProvide Ease-of-Installation and Maintenance

New Breaker Lifter Design

Responding to customer recommendations, we re-engineered the breaker lifter with increased mobilityenabling it to move smoothly on a continuous trackfrom structure-to-structure. This new design reducesthe amount of time necessary to remove a breaker formaintenance.

Breakers Shipped Installed

In an additional response to customer recommenda-tions, the standard for shipping Magnum DS Switch-gear is with the breakers installed, reducing the po-tential of breakers being installed in the wrong cell,lost, or damaged in shipment. This feature providescustomers with several time-saving and cost-reducingbenefits such as eliminating the requirement of re-ceiving, handling, storing, and installing the breakers.

Split Rear Access Covers

Bolted rear access covers are fabricated in two pieces,providing for ease-of-handling by a single person andeasy access to the cable compartment. Optional rearhinged padlockable doors are available.

Captive Hardware

Captive hardware is used on the rear covers to facilitateease-of-installation and maintenance. Additionally,structures at the shipping splits include captive hard-ware in the breaker compartment area providing foreasy section-to-section connections by just one person.

Less Floor Space

Magnum DS Switchgear provides for more circuitbreakers per square foot than any other ANSI switch-gear manufacturer.

Digitrip RMS 1150 Programmable Trip UnitThe state-of-the-art trip unit with true rms sensing can be pro-grammed at the faceplate or remotely with a PC using the IMPACCcommunications system. All system parameters as well as program-ming information can be viewed on the easy-to-read three line digitaldisplay window.

Floor Space ComparisonManufacturer Width Depth Floor Size Number

Inches Inches Space Ratio to ofSquare Magnum FeederFeet DS Breakers

Magnum DS 110 60 45.8 1.00 4-7GE AKD 134 60 55.8 1.22 3-6Siemens Type R 134 60 55.8 1.22 3-6Square D 110 61 46.6 1.02 2-5ABB K-Line 138 58 55.6 1.21 2-5

Electronic Trip Units

■ Digitrip RMS 220 provides long timeand instantaneous protection only.

■ Digitrip RMS 520 enables the user as manyas nine phase and ground current protectionsettings for maximum flexibility in trip-curveshaping and multi-unit coordination, and addsground current protection settings.

■ Digitrip RMS 520M adds phase, neutral, andground current metering…with a four-characterLCD display window.

Magnum DS Switchgear occupies the least amount of floor spacewhile providing for the most breaker protection per square foot.

Floor Space Comparison – Top View

Tim

e in

Sec

onds

Current in Multiples of Long Delay Setting Ir

.01

.1

1

10

60

1000

7000

4000

.5 1 50202 10 100

Digitrip 520/520MLong and Short Delay Curves

Tim

e in

Sec

onds

Current in Multiples of Rating In

.01

.1

1

10

60

1000

7000

4000

.05 .1 52.2 1 10

Digitrip 520/520MGround Curve

A Selection of Trip Units ProvidesExpanded Protection and Information Capabilities

Cutler-Hammer introduced the first microprocessor-based trip unit and has advanced the technology intoa new family of UL and CSA listed Digitrip RMSElectronic and Programmable Trip Units designedand engineered exclusively for Magnum DS Breakers.

Programmable Trip Units

■ Digitrip RMS 1150 provides programmabilityfor more sophisticated distribution systems– Increased protection and coordination capabilities.– Systems monitoring information including

power factor, voltage current, harmonic distor-tion values, and waveform capture with a three-line, (eight characters per line) LED display.

– Two programmable contacts for customer use.– Time stamping of trip events for improved

troubleshooting and diagnostics.– Accuracy of 1% on metered values and 2%

on energy and power.– Systems diagnostic information.– IMPACC communications.

Zone Selective Interlocking Capability ProvidesPositive System Coordination without Time Delays

Zone Selective Interlocking (ZSI) allows the breakerclosest to the fault to trip without any preset timedelay. The breaker closest to the fault trips first, whilethe remainder of the distribution system remains on-line, thus avoiding unnecessary and costly downtime.

Floor space comparison shown using 3200 ampere main-tie-maindouble ended switchgear with indicated feeder breakers on eachside; 480/277 volts cable in and out.

General Electric AKD Switchgear 22% Larger

Cutler-Hammer Magnum DS Switchgear

Width

Depth

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Magnum DS


The Power Circuit Breaker Field Installable Accessories

Magnum DS

Introducing Another Industry Power Breaker First!

The Highest ANSI Interrupting and Short Time(Withstand) Ratings…in the Smallest Physical Unit Size

Our Cutler-Hammer design team innovations, coupledwith customer focus group input, provided the re-definition of what is needed in an ANSI power breaker:

■ The capability to design more flexible systemsthat can withstand larger available fault currents.

■ Better coordination with downstream devices.■ Elimination of limiters in most instances.■ Reduced size of the switchgear assembly.

Cutler-Hammer Met the Challenge

Magnum DS Breakers are designed and engineeredspecifically for use in Magnum DS Low VoltageSwitchgear assemblies applied at nominal voltages of240, 480, and 600 V AC. Six continuous ratings – 800amperes through 5000 amperes – are covered by onlytwo breaker sizes.

Faceplate controls facilitate opera-tion of the breaker, and the threeaccessory mounting windowsprovide for easy identification.

The accessory cavity design, unique to ANSI power breakers, isaccessible in the front of the breaker. Up to three accessories can beeasily installed and wired in the field.

A Common Family of Accessories for Both Frame Sizes

We designed Magnum DS accessories to fit both framesizes, thus reducing inventory parts and the possibleconfusion that can exist when different accessorysizes are required for each individual breaker frame.

Magnum DS through-the-window accessories areinstalled near the right front of the breaker. Theunique windows in the breaker cover enable accesso-ries to be quickly identified by name and rating.

Accessories are plug-in, providing for easy mountingand wiring to save both installation time and cost.This feature facilitates accessory changes and re-placements by user personnel, eliminating the needto use factory trained personnel or outside servicecompanies.

Modular accessories are keyed for fast error-freemounting in the field. For example, the spring releasecan only be mounted in the center cavity.

The breaker can be convenientlyracked in or out, stopping at thevarious positions with the doorclosed.

Integrally designed breaker cas-sette for drawout breakers pro-vides clear indication of connect,test, and disconnect positions.

The breaker spring charginghandle is designed with suffi-cient space for operation evenwith a gloved hand.

An electric motor automaticallycharges the closing springs. In absenceof control power, the springs can bemanually charged.

Through-the-window elec-trical accessories are iden-tically sized, yet keyed forerror-free mounting.

The auxiliary switch is an internalaccessory that provides remoteelectrical indication if the breakeris open or closed.

Controls and indicators are functionally grouped onthe front of the breakers…and the through-the-doordesign means they are easily viewed and accessible.

■1 Trip Flag

■2 Three Accessory Windows

■3 Digitrip RMS Trip Unit

■4 Contact Status Indicator (Open or Closed)

■5 Spring Status Indicator (Charged or Discharged)

■6 “Push Off” to Open Breaker Button

■7 “Push On” to Close Breaker Button

■8 Manual Charging Handle

■9 Optional Operations Counter

■10 Optional “Off” Key Lock

■11 Padlockable Levering Device

■12 Color-Coded Breaker Position Indicators

2

34 5

9

11 12

6 7

1

10

8

Magnum DS modular design allowscustomers to mount accessories inthe field.

Factory Installed or Available as UL ListedField Installable Kits

Shunt TripProvides remotecontrolled circuitbreaker openingwhen energizedby a voltage input.

Spring ReleaseRemotely closesthe breaker whenits coil is energizedby a voltage input.

UndervoltageRelease (UVR)

Trips the breakerremotely whenan existing volt-age signal is lostor drops belowan establishedthreshold.

Through-the-Window Electrical Accessories

Internal Accessories

Auxiliary Switch – Provides the capability to remotelyindicate if the breaker is open or closed. Up to six normallyopen and six normally closed auxiliary contacts are avail-able for customer use.

Overcurrent Trip Switch (Bell Alarm) – A set of normallyopen and normally closed contacts that indicate when abreaker trips.

Electrical Operator – A universal type electric motor,internally mounted in the circuit breaker, that chargesthe closing springs automatically, facilitating remoteor local closing.

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Magnum DSSafety and Reliability


Rigid Frame Housing

Another Cutler-Hammer innovation is the MagnumDS Breaker’s rigid frame housing – an ANSI powerbreaker exclusive. This housing provides the strengthand stability required in the mounting of the currentpath and operating mechanism.

■ Increased Uptime. Because the current path isisolated and insulated inside a two-piece inter-connected housing, any potential damage thatmay occur during arc interruption between thepoles or outside of the breaker is minimized.

■ Increased Breaker Life. By providing rigidsupport for the operating mechanism and thecontact structure, mechanical stress is reduced,increasing reliability.

■ Design Reliability. The housing reduces thenumber of frame parts in comparison withconventional ANSI power breakers, providingincreased reliability.

■ Rigid Frame. The engineered thermoset compositeresin provides excellent structural properties,dielectric strength, and arc track resistance…helping to provide the higher interrupting andshort time (withstand) ratings in a smaller size.

Built-In Safety Features ProvideOptimum Operator Safety and System Security

■ Improved C-loop current path design providesdramatic improvements in both safety andefficiency. Higher current ratings increase theblow-on forces on the contact surfaces, allowingthe proper downstream protective device toopen, isolating the fault and increasing uptime.

■ Positive on is indicated on the breaker faceplate.This unique interlocking feature prevents thelevering door from being opened if the contactsare welded, protecting personnel from exposureto live primary contacts.

■ Making current release prevents the breakerfrom closing in on a fault exceeding 25 timesthe nominal current.

■ Keyed sensor plug insures error-free installationof the sensor in the field.

■ Deadfront faceplate isolates the operatorfrom the primary voltage when the breakeris energized.

■ Anti-pump prevents any attempts to reclose thebreaker on a short circuit fault if the close signal(mechanical or electrical) is maintained.

Connect. Both main and secondary contactsare connected and the breaker is ready fornormal operation.Test. Main disconnects are disengaged, secondarycontacts are engaged. All functions of the breakerand trip unit can be tested in this position.Disconnect. A storage position in the compartmentbut the breaker is open and disconnected.

Quality and Reliability

Cutler-Hammer performs consistent enduranceand reliability tests on Magnum DS Breakers.

■ Mini-Life Tests. A breaker is randomly selectedfrom the production line daily, and tested for anaverage of 50 mechanical operations to assureperformance as required.

■ Maxi-Life Tests. MTBF testing continuously testsMagnum DS Breakers until they fail. This identifiespotential performance issues with the breaker andprovides statistical analysis for further improvement.

Application Flexibility

Magnum DS Breakers are suitable for broad applica-tions in other Cutler-Hammer power equipment.

Significant overall size reductions are easily seen in this comparisonof 3200 ampere power breaker mounting dimensions.

■ Interlocked levering door cannot be opened untilthe contacts are in the open condition.

■ Three position indicators on the faceplate fordrawout mounting. Specific colors identify thebreaker position.

Transfer SwitchEquipment

Motor Control Center

Low VoltageSwitchboard

Magnum DS Ratings – Without Current LimitersBreaker Ratings at 240, 480, and 600 Volts

Maximum Breaker Interrupting Short Time Amperes Designation Rating Rating

800 MDS-408 42 kA 42 kAMDS-608 65 kA 65 kAMDS-808 85 kA 85 kAMDS-C08 100 kA 85 kA

1600 MDS-616 65 kA 65 kAMDS-816 85 kA 85 kAMDS-C16 100 kA 85 kA



4000 MDS-840 85 kA➀ 85 kAMDS-C40 100 kA➀ 100 kA


➀ Interrupting rating is 130 kA at 240 volts.

100 Percent Rated…Meet or Exceed Rigid ANSI and UL Standards

Magnum DS Breakers are 100 percent rated, UL listed,and are built and tested in an ISO 9000 certified facilityto applicable standards including:

■ ANSI C37.13 ■ NEMA SG3■ ANSI C37.16 ■ UL 1066■ ANSI C37.17 ■ CSA 22.2■ ANSI C37.50

Magnum DS is also suitable for use in:

■ UL 1558 Low Voltage Switchgear■ UL 891 Low Voltage Switchboards■ CSA 22.2.31 Low Voltage Assemblies

Frame SizesAmperes Dimensions – Inches

Height Depth* Width

800-3200 16.40 15.40 16.304000-5000 16.40 15.40 34.20

* Drawout breaker with finger clusters.

16.3 15.4

10.104 5.250 1.24516.150 13.390

13.854 16.40

3.070

34.2 15.4

10.104 5.250 1.24534.05 13.390

13.854 16.40

3.070

800-3200 Ampere Frame


The innovative design and engineer-ing advancements of Magnum DSBreakers have resulted in dramaticsize reductions and increased inter-rupting ratings…in just two physicalframe sizes.

4000A and 5000A Fixed Breaker

800A - 3200A Drawout Breaker

50% Smaller than Cutler-Hammer DSII

14% Smaller than Square D (Merlin Gerin) Masterpact

60% Smaller than General Electric AKR/WavePro

Cutler-Hammer Magnum DS Breaker

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Magnum DS

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1

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7


A Look Inside

Designed for Easy Access, Inspection,and Minimal Maintenance

The stored energy mechanism, control devices, ac-cessories, and secondary contacts are easily acces-sible by removing the front cover…held in place byfour captive screws. This can only be done when thebreaker is in the disconnect position or removed fromthe cell.

The current sensor viewing window on the rear of thebreaker allows for easy identification of the currentsensor mounted inside.

The contact wear indicator eliminates the need forelaborate testing to determine if the contact assemblyneeds replaced.

Many minor replacement functions involving themechanism, control, and/or accessories can be easilyaccomplished.

Two-Step Stored Energy Mechanismfor Manually and Electrically Operated Breakers

The potential energy is stored in the mechanism toclose the breaker in 5 cycles or less. Sufficient energyto open the breaker remains available following theclosing operation.

After closing, the charging spring can be recharged toprovide potential energy for reclosing following afault, providing high continuity of service. This featureallows for the following sequence: charge – close –recharge – open – close – open.

On manually operated breakers, closing springs arecharged by hand. For electrically operated breakers,springs are charged by an electric motor but can bemanually charged if no power is available.

New Flexible Current Path IncreasesCurrent Carrying Capability in Less Space

This rear view of a Magnum DS drawoutbreaker shows the designed-in safety fea-ture of locating the secondary contacts awayfrom the primary disconnects.

Cross-Section of Magnum DS Heel-Toe Contact

Visual contact wear indicatorshows when contact replace-ment is necessary.

12

10

11

14

1. Fully Closed PositionOnly the main contact (heel)touches and all current flowis through the main contact.

89

■1 Secondary Wiring Points

■2 Field Installable Accessories(Three Maximum)


■4 Optional ElectricCharging Motor





■9 Breaker Position Indicator

■10 Secondary Contacts

■11 Arc Chute Covers

■12 Primary FingerCluster Disconnects

■13 Current Sensor Window

■14 Rigid Frame Housing

13

Innovative Arc Running System ProvidesHigher Interrupting Capacity in Less Space

■ Heel-toe contact structure is a single contactfinger design that performs both main and arcingcontact functions by controlling the arc direction.This design provides for longer contact life.

■ Integral arc runner enhances the magnetic actionof the arc chute by drawing the arc into the chutewith increased efficiency, reducing arcing at the

2. Simultaneous Touch-ing of All ContactsThe arcing contact (toe)touches down before themain contact (heel) lifts offwith current flow dividingbetween main (heel) andarcing (toe) contacts.

3. Toe (Arcing)Contacts TouchingThe main contact (heel) liftsoff with the arcing contact(toe) still touching to dealwith any arcing. Currentflow is only through thearcing contact (toe).

4. Fully Open PositionBoth the main (heel) andarcing (toe) contacts areopen and there is no currentflow. The arc dissipates upinto the arc chute.

Unlike conventional power breaker designs utilizing separate arcingand main current carrying contacts, Magnum DS Circuit Breakersperform both functions on different parts of the same contact finger.Each finger has a moving main contact (heel) and a moving arcingcontact (toe). A complete movable contact is merely the combinationof a number of individual fingers.As the circuit breaker is called upon to open, the toe and heel simulta-neously touch. At that point, the current changes its path from themain contact to the arcing contact. As the heel lifts off, any remainingcurrent is driven to the toe. The result is minimal arcing damage to themain contact (heel) providing for longer main contact life.Upon closing, the toe absorbs most of the impact and deals with anyarcing by touching down before the heel. Once again, the maincontact (heel) is protected resulting in longer life.

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Stationary Main Contact

Moving Main Contact (Heel)

Moving Contact Fingers

Moving Contact Carrier

Arc Chute

Integral Arc Runner

Braided Flexible Shunts

Moving Arcing Contact (Toe)

Load Conductor

Line Conductor

Contact Sensor

Current Flow

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Positioning of the secondary contact subassembly is dedicated forinstallation, maintenance, and testing. Top view shown with breakercover removed, bottom of photo is front of breaker.

■ Multi-finger contact structure divides the currentflow, increasing the thermal carrying capability ofthe entire current path.

■ Flexible braided current path to the contact fingersreduces necessary current carrying space andprovides a smooth connection, eliminating boltedjoints and contact springs. This design helps in-crease breaker service life by reducing localizedheat buildup and mechanical stress inherent inconventional bolted joints.

toe of the contacts.This exclusive designallows for higher arc-ing in a smaller space,resulting in increasedinterrupting ratings.

■ Patented alternatingV Arc Chute™ quicklydivides and extin-guishes the arc. TheV Arc Chute reactionspeed protects contactmaterial, extendingcontact life.

Isolated View of Contact Opening Sequence

Arc chutes can be easily re-moved and inspected. The con-tact wear indicator on the maincontact assembly can also beinspected.

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Magnum DSSafety and Reliability


Rigid Frame Housing

Another Cutler-Hammer innovation is the MagnumDS Breaker’s rigid frame housing – an ANSI powerbreaker exclusive. This housing provides the strengthand stability required in the mounting of the currentpath and operating mechanism.

■ Increased Uptime. Because the current path isisolated and insulated inside a two-piece inter-connected housing, any potential damage thatmay occur during arc interruption between thepoles or outside of the breaker is minimized.

■ Increased Breaker Life. By providing rigidsupport for the operating mechanism and thecontact structure, mechanical stress is reduced,increasing reliability.

■ Design Reliability. The housing reduces thenumber of frame parts in comparison withconventional ANSI power breakers, providingincreased reliability.

■ Rigid Frame. The engineered thermoset compositeresin provides excellent structural properties,dielectric strength, and arc track resistance…helping to provide the higher interrupting andshort time (withstand) ratings in a smaller size.

Built-In Safety Features ProvideOptimum Operator Safety and System Security

■ Improved C-loop current path design providesdramatic improvements in both safety andefficiency. Higher current ratings increase theblow-on forces on the contact surfaces, allowingthe proper downstream protective device toopen, isolating the fault and increasing uptime.

■ Positive on is indicated on the breaker faceplate.This unique interlocking feature prevents thelevering door from being opened if the contactsare welded, protecting personnel from exposureto live primary contacts.

■ Making current release prevents the breakerfrom closing in on a fault exceeding 25 timesthe nominal current.

■ Keyed sensor plug insures error-free installationof the sensor in the field.

■ Deadfront faceplate isolates the operatorfrom the primary voltage when the breakeris energized.

■ Anti-pump prevents any attempts to reclose thebreaker on a short circuit fault if the close signal(mechanical or electrical) is maintained.

Connect. Both main and secondary contactsare connected and the breaker is ready fornormal operation.Test. Main disconnects are disengaged, secondarycontacts are engaged. All functions of the breakerand trip unit can be tested in this position.Disconnect. A storage position in the compartmentbut the breaker is open and disconnected.

Quality and Reliability

Cutler-Hammer performs consistent enduranceand reliability tests on Magnum DS Breakers.

■ Mini-Life Tests. A breaker is randomly selectedfrom the production line daily, and tested for anaverage of 50 mechanical operations to assureperformance as required.

■ Maxi-Life Tests. MTBF testing continuously testsMagnum DS Breakers until they fail. This identifiespotential performance issues with the breaker andprovides statistical analysis for further improvement.

Application Flexibility

Magnum DS Breakers are suitable for broad applica-tions in other Cutler-Hammer power equipment.

Significant overall size reductions are easily seen in this comparisonof 3200 ampere power breaker mounting dimensions.

■ Interlocked levering door cannot be opened untilthe contacts are in the open condition.

■ Three position indicators on the faceplate fordrawout mounting. Specific colors identify thebreaker position.

Transfer SwitchEquipment

Motor Control Center

Low VoltageSwitchboard

Magnum DS Ratings – Without Current LimitersBreaker Ratings at 240, 480, and 600 Volts

Maximum Breaker Interrupting Short Time Amperes Designation Rating Rating

800 MDS-408 42 kA 42 kAMDS-608 65 kA 65 kAMDS-808 85 kA 85 kAMDS-C08 100 kA 85 kA






➀ Interrupting rating is 130 kA at 240 volts.

100 Percent Rated…Meet or Exceed Rigid ANSI and UL Standards

Magnum DS Breakers are 100 percent rated, UL listed,and are built and tested in an ISO 9000 certified facilityto applicable standards including:

■ ANSI C37.13 ■ NEMA SG3■ ANSI C37.16 ■ UL 1066■ ANSI C37.17 ■ CSA 22.2■ ANSI C37.50

Magnum DS is also suitable for use in:

■ UL 1558 Low Voltage Switchgear■ UL 891 Low Voltage Switchboards■ CSA 22.2.31 Low Voltage Assemblies

Frame SizesAmperes Dimensions – Inches

Height Depth* Width

800-3200 16.40 15.40 16.304000-5000 16.40 15.40 34.20

* Drawout breaker with finger clusters.

16.3 15.4

10.104 5.250 1.24516.150 13.390

13.854 16.40

3.070

34.2 15.4

10.104 5.250 1.24534.05 13.390

13.854 16.40

3.070



The innovative design and engineer-ing advancements of Magnum DSBreakers have resulted in dramaticsize reductions and increased inter-rupting ratings…in just two physicalframe sizes.

4000A and 5000A Fixed Breaker

800A - 3200A Drawout Breaker

50% Smaller than Cutler-Hammer DSII

14% Smaller than Square D (Merlin Gerin) Masterpact

60% Smaller than General Electric AKR/WavePro

Cutler-Hammer Magnum DS Breaker

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Magnum DS


The Power Circuit Breaker Field Installable Accessories

Magnum DS

Introducing Another Industry Power Breaker First!

The Highest ANSI Interrupting and Short Time(Withstand) Ratings…in the Smallest Physical Unit Size

Our Cutler-Hammer design team innovations, coupledwith customer focus group input, provided the re-definition of what is needed in an ANSI power breaker:

■ The capability to design more flexible systemsthat can withstand larger available fault currents.

■ Better coordination with downstream devices.■ Elimination of limiters in most instances.■ Reduced size of the switchgear assembly.

Cutler-Hammer Met the Challenge

Magnum DS Breakers are designed and engineeredspecifically for use in Magnum DS Low VoltageSwitchgear assemblies applied at nominal voltages of240, 480, and 600 V AC. Six continuous ratings – 800amperes through 5000 amperes – are covered by onlytwo breaker sizes.

Faceplate controls facilitate opera-tion of the breaker, and the threeaccessory mounting windowsprovide for easy identification.

The accessory cavity design, unique to ANSI power breakers, isaccessible in the front of the breaker. Up to three accessories can beeasily installed and wired in the field.

A Common Family of Accessories for Both Frame Sizes

We designed Magnum DS accessories to fit both framesizes, thus reducing inventory parts and the possibleconfusion that can exist when different accessorysizes are required for each individual breaker frame.

Magnum DS through-the-window accessories areinstalled near the right front of the breaker. Theunique windows in the breaker cover enable accesso-ries to be quickly identified by name and rating.

Accessories are plug-in, providing for easy mountingand wiring to save both installation time and cost.This feature facilitates accessory changes and re-placements by user personnel, eliminating the needto use factory trained personnel or outside servicecompanies.

Modular accessories are keyed for fast error-freemounting in the field. For example, the spring releasecan only be mounted in the center cavity.

The breaker can be convenientlyracked in or out, stopping at thevarious positions with the doorclosed.

Integrally designed breaker cas-sette for drawout breakers pro-vides clear indication of connect,test, and disconnect positions.

The breaker spring charginghandle is designed with suffi-cient space for operation evenwith a gloved hand.

An electric motor automaticallycharges the closing springs. In absenceof control power, the springs can bemanually charged.

Through-the-window elec-trical accessories are iden-tically sized, yet keyed forerror-free mounting.

The auxiliary switch is an internalaccessory that provides remoteelectrical indication if the breakeris open or closed.

Controls and indicators are functionally grouped onthe front of the breakers…and the through-the-doordesign means they are easily viewed and accessible.

■1 Trip Flag

■2 Three Accessory Windows


■4 Contact Status Indicator (Open or Closed)

■5 Spring Status Indicator (Charged or Discharged)

■6 “Push Off” to Open Breaker Button

■7 “Push On” to Close Breaker Button





■12 Color-Coded Breaker Position Indicators

2

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11 12

6 7

1

10

8

Magnum DS modular design allowscustomers to mount accessories inthe field.

Factory Installed or Available as UL ListedField Installable Kits

Shunt TripProvides remotecontrolled circuitbreaker openingwhen energizedby a voltage input.

Spring ReleaseRemotely closesthe breaker whenits coil is energizedby a voltage input.

UndervoltageRelease (UVR)

Trips the breakerremotely whenan existing volt-age signal is lostor drops belowan establishedthreshold.

Through-the-Window Electrical Accessories

Internal Accessories

Auxiliary Switch – Provides the capability to remotelyindicate if the breaker is open or closed. Up to six normallyopen and six normally closed auxiliary contacts are avail-able for customer use.

Overcurrent Trip Switch (Bell Alarm) – A set of normallyopen and normally closed contacts that indicate when abreaker trips.

Electrical Operator – A universal type electric motor,internally mounted in the circuit breaker, that chargesthe closing springs automatically, facilitating remoteor local closing.

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Magnum DSThe Trip Unit


Additional Innovative FeaturesProvide Ease-of-Installation and Maintenance

New Breaker Lifter Design

Responding to customer recommendations, we re-engineered the breaker lifter with increased mobilityenabling it to move smoothly on a continuous trackfrom structure-to-structure. This new design reducesthe amount of time necessary to remove a breaker formaintenance.

Breakers Shipped Installed

In an additional response to customer recommenda-tions, the standard for shipping Magnum DS Switch-gear is with the breakers installed, reducing the po-tential of breakers being installed in the wrong cell,lost, or damaged in shipment. This feature providescustomers with several time-saving and cost-reducingbenefits such as eliminating the requirement of re-ceiving, handling, storing, and installing the breakers.

Split Rear Access Covers

Bolted rear access covers are fabricated in two pieces,providing for ease-of-handling by a single person andeasy access to the cable compartment. Optional rearhinged padlockable doors are available.

Captive Hardware

Captive hardware is used on the rear covers to facilitateease-of-installation and maintenance. Additionally,structures at the shipping splits include captive hard-ware in the breaker compartment area providing foreasy section-to-section connections by just one person.

Less Floor Space

Magnum DS Switchgear provides for more circuitbreakers per square foot than any other ANSI switch-gear manufacturer.

Digitrip RMS 1150 Programmable Trip UnitThe state-of-the-art trip unit with true rms sensing can be pro-grammed at the faceplate or remotely with a PC using the IMPACCcommunications system. All system parameters as well as program-ming information can be viewed on the easy-to-read three line digitaldisplay window.

Floor Space ComparisonManufacturer Width Depth Floor Size Number

Inches Inches Space Ratio to ofSquare Magnum FeederFeet DS Breakers

Magnum DS 110 60 45.8 1.00 4-7GE AKD 134 60 55.8 1.22 3-6Siemens Type R 134 60 55.8 1.22 3-6Square D 110 61 46.6 1.02 2-5ABB K-Line 138 58 55.6 1.21 2-5

Electronic Trip Units

■ Digitrip RMS 220 provides long timeand instantaneous protection only.

■ Digitrip RMS 520 enables the user as manyas nine phase and ground current protectionsettings for maximum flexibility in trip-curveshaping and multi-unit coordination, and addsground current protection settings.

■ Digitrip RMS 520M adds phase, neutral, andground current metering…with a four-characterLCD display window.

Magnum DS Switchgear occupies the least amount of floor spacewhile providing for the most breaker protection per square foot.

Floor Space Comparison – Top View

Tim

e in

Sec

onds

Current in Multiples of Long Delay Setting Ir

.01

.1

1

10

60

1000

7000

4000

.5 1 50202 10 100

Digitrip 520/520MLong and Short Delay Curves

Tim

e in

Sec

onds

Current in Multiples of Rating In

.01

.1

1

10

60

1000

7000

4000

.05 .1 52.2 1 10

Digitrip 520/520MGround Curve

A Selection of Trip Units ProvidesExpanded Protection and Information Capabilities

Cutler-Hammer introduced the first microprocessor-based trip unit and has advanced the technology intoa new family of UL and CSA listed Digitrip RMSElectronic and Programmable Trip Units designedand engineered exclusively for Magnum DS Breakers.

Programmable Trip Units

■ Digitrip RMS 1150 provides programmabilityfor more sophisticated distribution systems– Increased protection and coordination capabilities.– Systems monitoring information including

power factor, voltage current, harmonic distor-tion values, and waveform capture with a three-line, (eight characters per line) LED display.

– Two programmable contacts for customer use.– Time stamping of trip events for improved

troubleshooting and diagnostics.– Accuracy of 1% on metered values and 2%

on energy and power.– Systems diagnostic information.– IMPACC communications.

Zone Selective Interlocking Capability ProvidesPositive System Coordination without Time Delays

Zone Selective Interlocking (ZSI) allows the breakerclosest to the fault to trip without any preset timedelay. The breaker closest to the fault trips first, whilethe remainder of the distribution system remains on-line, thus avoiding unnecessary and costly downtime.

Floor space comparison shown using 3200 ampere main-tie-maindouble ended switchgear with indicated feeder breakers on eachside; 480/277 volts cable in and out.

General Electric AKD Switchgear 22% Larger

Cutler-Hammer Magnum DS Switchgear

Width

Depth

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Magnum DS


The Assembly

Bus Compartment Can Be Isolatedby Optional Grounded Metal Barriers

Customer input recommended this feature as anoption since grounded metal barriers can interferewith thermal scans. When specified, these barriersserve to isolate the bus compartment from the cablecompartment, protecting against accidental contactwith the live vertical and cross bus, and reducing thepotential of objects falling into the bus compartment.

Shipping Split Terminal Blocks

Magnum DS Switchgear is delivered with plug-in ter-minal blocks at the shipping splits. They’re rated at 600volts, 40 amperes and accept a wire range of #22 to #8.

Our terminal blocks interlock mechanically withoutremoving the line or load connection, virtually elimi-nating the labor normally required to connect controlwire across shipping splits. Installation speed is in-creased and the potential of incorrect connections issubstantially reduced.

Cable lugs are mounted at a 45°angle to facilitate cable termi-nations with minimum bend-ing. Both compression andmechanical lugs are available.

Rear CompartmentOptionsGenerous rear compart-ment space is providedfor easy cable connec-tion, maintenance, andinspection. The rear com-partment is shown withoptions:

■1 Metal Barriers

■2 Hinged Door

■3 Space Heater

■4 Compression Lugs

3

2

1

1

Unique Control Wireway

The control wireway is located at the front of theswitchgear structure, on the side. Control circuits inall cells can be wired without removing any of thebreakers…and the wireway itself is safely barrieredfrom the power circuits.

An installer can wire the rear power circuits at thesame time another is wiring the control circuits, pro-viding a reduction in overall installation time.

Convenient Control Conduit Entry Points

We simplified access for both top and bottom controlconduit entry to help facilitate wiring and reduceinstallation time. Top access is through a cover that iseasily removed and punched by the customer toreceive the conduit. This design feature eliminatesmetal cutting on the assembly itself and the potentialof damaging metal shavings falling into the assembly.Bottom entry is made directly into the control wireway.

Top control conduit access is through an easily re-movable cover.

Magnum Digitrip Trip Units

The next generation of proven DigitripRMS Trip Units is available exclu-sively on Magnum DS Breakers. Thesetrue rms sensing trip units provideaccurate coordination with the con-ductors and equipment the breaker isdesigned to protect.

➀ Less than 1200 amperes. In = Rating plug rating.Ir = LDPU setting.Is = Sensor rating.

➂ Must utilize NT-basedIMPACC software to enablecommunications.

➁ Cause of trip – L, S, I, G,and making current release.

TRIP UNIT TYPE DIGITRIP 220 DIGITRIP 520 DIGITRIP 520M DIGITRIP 1150Ampere Range (16) 200A-5000A 200A-5000A 200A-5000A 200A-5000AInterrupting Rating at 480V 42 through 100kA 42 through 100kA 42 through 100kA 42 through 100kArms Sensing Yes Yes Yes YesPROTECTION AND COORDINATIONProtection Ordering Options LI LSI, LSIG 0LSI, LSIG, LSIA➀ 0LSI, LSIG, LSIA➀

Fixed Rating Plug (In) Yes Yes Yes YesOvertemperature Trip Yes Yes Yes Yes

Long Adjustable Rating Plug (In) No No No NoDelay Long Delay Setting Fixed 0.4-1.0 x (ln) 0.4-1.0 x (In) 0.4-1.0 x (In)Protection Long Delay Time I2t at 6 x Ir Fixed 2-24 Seconds 2-24 Seconds 2-24 Seconds

Long Delay Time I4t No No No 1-5 SecondsLong Delay Thermal Memory Yes Yes Yes YesHigh Load Alarm No No No 0.5-1.0 x Ir

Short Short Delay Pick-Up No 200-1000% M1 x (Ir) 200-1000% M1 x (Ir) 150% M1 x (Ir)Delay Short Delay Time I2t at 8 x Ir No 100-500 ms 100-500 ms 100-500 ms

Short Delay Time Flat No 100-500 ms 100-500 ms 100-500 msShort Delay Time ZSI No Yes Yes Yes

Instan- Instantaneous Pick-Up 200-1000% M1 x (In) 200-1000% M1 x (In) 200-1000% M1 x (In) 200-M1 x (In)taneous Making Current Release Yes Yes Yes YesProtection Instantaneous Override No No No No

Off Position Yes Yes Yes YesGround Ground Fault Alarm No No Yes 25% -1200A ULFault Ground Fault Pick-Up No 025-100% x (In)➀ 025-100% x (In)➀ 25% -1200A ULProtection Ground Fault Delay I2t at .625 x In No 100-500 ms 100-500 ms 100-500 ms

Ground Fault Delay Flat No 100-500 ms 100-500 ms 100-500 msGround Fault ZSI No Yes Yes YesGround Fault Thermal Memory No Yes Yes Yes

SYSTEM DIAGNOSTICSCause of Trip LEDs No 0Yes➁ 0Yes➁ 0Yes➁

Magnitude of Trip Information No No No YesRemote Signal Contacts No No Yes YesProgrammable Contacts No No No 2SYSTEM MONITORINGDigital Display No No 4 Char. LCD 24 Char. LEDCurrent (% FS Sensor) No No Yes (2%) Yes (1%)Voltage (%) L to L No No No Yes (1%)Power and Energy (%) No No No Yes (2%)Apparent Power kVA and Demand No No No YesReactive Power kVAR No No No YesPower Factor No No No YesCrest Factor No No No YesPower Quality – Harmonics No No No Yes% THD No No No YesSYSTEM COMMUNICATIONSIMPACC No No No 0Yes➂

Testing Method Test Set Test Set Test Set Integral and Test Set➃FIELD OPTIONSTrip Log (3 Events) No No No YesElectronic Operations Counter No No No YesTriplink No No No YesWaveform Capture No No No Yes

Instan-taneousProtection

GroundFaultProtection

LongDelayProtection

ShortDelayProtection4

➃ Tester for secondaryinjection.

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Magnum DSMetering and Protection Products


A New Through-the-Door Design ProvidesUser-Friendly Operation and Optimum Safety

Through-the-door design provides clear visual andphysical access to the trip unit and all breaker controlsand indicators…including open and close buttons,the open/close indicating flag, the charging handle,breaker interlock, and the spring charge/dischargeflag. Even breaker levering is accomplished with thebreaker compartment door closed.

For safety and security, the breaker compartmentprovides three breaker positions with the door closed:connect, test, and disconnect.

Extension rails can be padlocked to prevent a breakerfrom being inserted into a cell, a requirement whenmaintenance is being performed. This helps assurethat no one can install a breaker and energize a circuiton which a person may be working.

Unique Secondary Contact PlacementFacilitates Wiring and Maintenance

Secondary wiring points are located in the top frontportion of each cell. A separate door covers the con-tacts so an operator can safely access them withoutopening the breaker compartment door. Customercontact points are dedicated to the customer’s inter-face meaning they are free from factory connections.

The secondary terminals have standard finger-proofhinged covers, providing safety by protecting againstaccidental contact with live secondary contacts. Cov-ers are hinged for making connections and include asmall hole for circuit testing using a probe.

Each secondary contact point is dedicated to a spe-cific function, allowing standardized wiring diagramsand true electrical interchangeability of common sizebreakers. Standard wiring points help improve qual-ity while reducing maintenance and inspection timefor customers.

Unique Vertical Bus Configuration ProvidesHighest Short Circuit and Withstand Ratings

The exclusive “U” shaped bar provides higher me-chanical strength that yields standard bus bracingratings of 100 kA…and optional 150 kA and 200 kA, thehighest short circuit rating in the industry. In addition,the bus has been tested for short circuit values of 85kA for a full 60 cycles.

Breaker Interface ModuleCentralized Local or Remote Monitoringand Information Display■ A communications center that monitors up to

50 Magnum DS Breakers equipped with DigitripRMS Electronic or Programmable Trip Units.

■ Can be used to program/test programmabletrip units.

■ Displays status, cause of trip, metered values(including current at time of trip), and energyinformation from each monitored device.

Factory Installed in Magnum DS Switchgear

Cutler-Hammer was the first manufacturer to cost-effectively bring microprocessor-based metering

IQ AnalyzerA Highly Accurate Meter that ProvidesEnergy Management and Power Quality Informationon an Easy-to-Read Display■ Meets rigid ANSI C12.16 Class 10 accuracy

specification for revenue meters.■ Waveform display includes the ability to detect

subcycle voltage disturbances, including voltagetransients and subcycle voltage interruptions.

■ Analysis screens provide detailed information ontrends, recorded events/alarms, harmonic distor-tion, and peak demands of current and power.

IQ DP-4000™

A Full Function Meter Idealfor Complete System Monitoring■ Direct reading metered values including watts, watt

demand, watthours, power factor, VA, VA hours,varhours, percentage THD, and load shedding.

■ Other direct reading metered values include ACamperes, AC voltage, and frequency.

■ Protection functions include phase loss, phaseunbalance, phase reversal, overvoltage, under-voltage, and delay.

Clipper Power SystemTransient Voltage Surge Suppression (TVSS)■ Protects sensitive equipment from the damaging

effects of high and low energy transients as wellas high frequency noise.

■ “Zero lead length” direct bus bar connectionprovides superior performance when comparedto conventional cable connected or nonintegratedsolutions, resulting in the lowest let-through volt-age in the industry.

■ Viewed parameters include current, voltage, power(watts, vars, and VA), energy, frequency, demand,power factor, percentage THD current, percentageTHD voltage, K Factor, CBEMA derating factor, crestfactor, discrete I/O status, and analog input reading.

■ Easy-to-use. All programming is completed bythe operator on the faceplate. A PC is not required.

■ Provides true rms sensing through the 50th har-monic and displays even and odd multiples ofthe fundamental current and voltage through the50th harmonic.

■ Nonvolatile memory.■ Optional IMPACC communications capability.

■ Replaces individually mounted and wired amme-ters, voltmeters, ammeter and voltmeter switches,wattmeters, varmeters, power factor meters, fre-quency meters, watthour and demand meters.

■ Nonvolatile memory.■ Optional IMPACC communications capability.■ True rms sensing.

and protection devices to the basic levels of plantoperation. These devices provide more usable infor-mation with greater accuracy.

■ Monitored locally at the switchgear or, for example,remotely at the maintenance engineer’s office.

■ Centralized alternative to individually mountedand wired ammeters and ammeter switches,watthour meters, circuit breaker position indicatinglights, alarm contacts, and test/programmers.

■ Monitors harmonic information.■ User friendly functions displayed by an LED

to indicate the selected function.■ Nonvolatile memory.■ Optional IMPACC communications capability.

■ Highest level of filtering in the industry (55 dB at100 Hz) removes common electrical disturbancesincluding high and low energy ringing transients.

■ Withstands over 3000 sequential Category C3shots (IEEE C62.41 1991) with less than a fivepercent change in clamping voltage.

■ Three levels of status monitoring.■ Standard disconnect.■ Meets UL 1449 requirements for surge suppression

devices and UL 1283 for noise filtration devices.

Safety is enhanced by thethrough-the-door design thatprovides for three breaker posi-tions with the door closed: con-nect, test, and disconnect. In thewithdrawn position above, thebreaker can be removed from thecell on integral extension rails.

CONNECT

TEST

DISCONNECT

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Magnum DS


The Switchgear IMPACC Communications

Magnum DS

Highly Reliable, Comprehensive Communicationsthat will Improve Your Operating Efficiency

Your main objective is to produce a cost-effective,high quality product or service. Several things standin your way – unexpected equipment downtime,energy costs, reduced maintenance personnel, tighterbudgets, and limited capital or cash flow. Downtimeor power outage costs range from a few thousand tohundreds of thousands of dollars per hour in lostproduction and related costs.

How Can You Excel in this Environment?

By obtaining information and making it available inreal time to the people who need to have it…providedcost-effectively in a simple format that each personcan understand and utilize. You can obtain this infor-mation from your electrical distribution system with aCutler-Hammer IMPACC System.

With Magnum DS Switchgear, for example, a mastercontrol unit is used to communicate with the breaker’sDigitrip RMS 1150 Trip Unit, and other IQ devices suchas an IQ Analyzer and IQ DP-4000. The master controlunit may be a personal computer, an existing buildingmanagement system, a programmable logic control-ler, or a distributed control system.

Secondary wiring points are lo-cated in the top front of thebreaker cell, easily accessed viaa separate door without expo-sure to the power cables.

E-TRENDE-BILL

Meets All Standards…Seismically Qualified

Magnum DS Switchgear is built andtested to the following standards:

■ ANSI C37.20.1 ■ NEMA SG3■ ANSI C37.51 ■ NEMA SG5■ UL 1558 ■ CSA

Magnum DS Switchgear and CircuitBreakers are manufactured and as-sembled in ISO certified facilities.

The switchgear has been seismicallyqualified and exceeds requirements ofthe Uniform Building Code (UBC) andCalifornia Building Code (CBC).

Two Structure Widths ProvideGreater Capacity in Less Space

Cutler-Hammer engineered MagnumDS Switchgear in two space-savingstructure widths: 22-inches wide for800-3200A breaker frames and 44-inches wide for 4000-5000A breakerframes. Magnum DS Switchgear pro-vides opportunities for more circuitbreakers in less space than any otherANSI switchgear.

All breakers can be padlocked tosecure the breaker in all threepositions. An optional key inter-lock (not shown) can also securethe breaker in each position.

The heavy duty structure includesslots in the frame bottom makingit easier to move the assemblyusing a prybar.

The isolated secondary wirewayis uniquely located at the side ofthe structure, providing for topor bottom customer cell wiringwithout removing the breaker.

UL STANDARDS

Manufactured in an

ANSI

ISOFacility

CERTIFIED

IMPACC Software

IMPACC features a suite of client-server softwareproducts. Cutler-Hammer designed IMPACC specifi-cally as a complete electrical distribution systemmonitoring program that includes graphical one-lineand elevation displays, waveform analysis, trip curvecoordination, historical trending, event and alarmmanagement.

IMPACC was designed to communicate using anexisting or dedicated plant TCP/IP Ethernet network.Client software will operate on Microsoft WindowsNT and 95 operating systems. Server software oper-ates on Windows NT exclusively for maximum sys-tem reliability.

TRIP CURVE COORDINATIONWAVEFORM ANALYSIS

ELEVATION DISPLAYONE LINE DIAGRAM

E-Bill Software

E-Bill is an exclusive metering and analysis packagedesigned to gather data for improved allocation andmanagement of energy costs. As an enhancement toE-Bill, Cutler-Hammer offers E-Track, which providesthe capability to track industrial production energycosts on a per unit basis. For those users interestedin graphics, E-Trend software provides historical en-ergy usage information in a Windows-based graphi-cal display.

Through IMPACC, information communicated froma Magnum DS Breaker includes breaker status (open/close/trip), cause and magnitude of trip, meteringvalues, trip rating, and time stamping of events. Thebreaker itself can be remotely opened or closed.

Software Solutions to Match Your Needs

IMPACC software is available to meet specific re-quirements, providing for easy expansion as systemrequirements increase. This software ranges fromsimple monitoring tocomplex power man-agement applica-tions. IMPACC bringsintelligence to anydistribution systemfor energy monitor-ing, preventive main-tenance, expert sys-tem diagnostics, andcustom control appli-cations.

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A Key to Distribution System Reliability

Nonlinear loads, momentary voltage tran-sients, and surges can cause significantpower quality problems in both industrialand commercial facilities. Many industrialprocesses and solid-state devices are ex-tremely sensitive to power qualityproblems…and manufacturing operationscan be disrupted by voltage or frequencyvariances. Poor power quality can result inexpensive downtime and costly equipmentfailures. Computer data centers are verysensitive and minor power disturbancescan result in downtime and significantoperational problems.

The negative effect of harmonics can re-sult in overheated neutrals in panelboards,switchboards, overheated transformers,and nuisance tripping of breakers andadjustable frequency drives.

Energy: If You Can’t Measure It,You Can’t Manage It

Energy consumption is a major operationscost for any building and a significant partof every tenant’s rent. Electric utilities, re-acting to increased demands, have devel-oped programs that provide cost reductionsfor energy conservation…but penalize forusage during peak demand hours. Addi-tionally, re-regulation of the utility industryis creating new opportunities to save energyand significantly reduce energy expenses.

Tenants have the option to decreaseconsumption if they can monitor energyusage. By reducing their consumption, peakdemand charges (often a substantial por-tion of a building’s electric bill) will belowered, thus making the building moreattractive to prospective tenants.

Decreases in energy consumption are alsoimportant in manufacturing facility depart-ments or “lines.” Many manufacturingcompanies are now placing the responsi-bility for energy budgeting at the line fore-man level…and this includes calculatingenergy costs just the same as for labor,materials, and other direct expenses.


Unique

Technology

Advancements

and Innovative

Features

Our Customers

Asked For

For Greater Reliability, Increased Productivity,and Significant Cost Savings...Cutler-Hammer has the Solutions

Cutler-Hammer Power for Productivity

For nearly 70 years Cutler-Hammer has designed, engineered, and manufac-tured low voltage switchgear, power circuit breakers, and trip units. Our productinnovations have continually set the standard for quality and reliability, andrepresent the largest installed base of ANSI low voltage switchgear.

As a result of our extensive experience, we’ve learned that low voltage switch-gear requirements constantly change. System designers continually demandincreased performance, necessitating innovative low voltage switchgear solu-tions that provide higher ratings in less space, a rugged structure, enhancedsafety, and easier maintenance…plus the increasingly important capabilities ofcommunications and power quality monitoring and measuring.

Anticipating future electrical distribution system design requirements andindustry trends, a dedicated team of Cutler-Hammer engineers and scientists

combined their switchgear and power breaker expertise with input from customer focus groupsprovided during the equipment design phase. The result is the next generation of low voltageswitchgear…the revolutionary Magnum DS!

Higher Ratings, Increased Strength, and Expanded Capabilities…in Less Space

We designed Magnum DS Switchgear to be structurally stronger while providing greaterinterrupting and withstand ratings in less space than any other ANSI switchgear. Increasedratings in less space provide opportunities to design more rugged electrical distributionsystems that can handle larger available fault currents while eliminating the need for limitersin most instances and providing for better coordination with downstream devices.

We also included capabilities for our customers to utilize Cutler-Hammer industry-leadingcommunications and power quality measurement technologies.

■ Highest Interruption and Short Time (Withstand) Ratings. Magnum DS Breakers providethe industry’s highest ANSI ratings available without current limiters in a physicallysmaller size.

■ A New Through-the-Door Design. All Magnum DS Breaker controls, indicators, and thetrip unit are visible and can be safely accessed without opening the compartment door.

■ Smaller Size. Magnum DS Breakers includeseveral unique technology breakthroughs makingthem the industry’s physically smallest ANSIpower breakers.

■ A New Family of Trip Units. A full range ofDigitrip® RMS Electronic and Programmable TripUnits has been developed to provide customerswith a choice of expanded protection, information,power quality measurement, and communicationcapabilities to meet specific requirements.

■ Only Two Structure Widths. 22- and 44-inch widths.■ Unique Wireway. A unique 4-inch wireway

is located on the side of the structure for quickand safe wiring.

In today’s sophisticated

distribution systems, providing

power requires more than just

meeting minimum standards.

It necessitates implementation

of solutions that range from

efficient distribution to

coordination to power quality

to energy management to

communications! The end result

is the production of cost-effective,

high quality products.

Power Quality Energy Management

Magnum DS

Switchgear:

The Next

Generation

from the

Industry Leader

in ANSI Low

Voltage

Switchgear!

Cutler-Hammer…A Leading Provider of

Electrical Power Distribution Solutions

Cutler-Hammer Engineering Services

Enhancing Existing Equipment Reliability

Increased system loads and normal equip-ment wear can alter performance charac-teristics and introduce unexpected line vari-ables. Cutler-Hammer Engineering Servicesprovides a solution with skilled engineersand technicians that conduct power qualitysite surveys, and monitoring and evaluationstudies in addition to providing maintenance

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Magnum DS

If Your System’s Not Up…It’s Down

In today’s electrical distribution systems,the demand for higher standards of pro-tection and coordination are driven bydemands for a more reliable, more accuratedistribution system. A distribution systemthat eliminates unnecessary trips, isolatesa fault to ensure minimum downtime, andprovides system information to assist theuser to better manage the system.

Cutler-Hammer has developed a completefamily of microprocessor-based devices tomeet the demands of users and designers ofelectrical distribution systems. Our DigitripOPTIM Programmable and Digitrip RMSElectronic Trip Units offer circuit protec-tion, information, integral testing, remotecommunications, and energy monitoringfunctions for low voltage breakers…whilea Digitrip 1150 Programmable Trip Unit hasbeen engineered exclusively for MagnumDS Breakers.

Power for Productivity

Energy costs are rising an average eight to10 percent per year…maintenance andengineering staffs are trying to do morewith less…and electrical power quality isdecreasing. These situations are providingincreased pressure on electrical staff per-sonnel to improve quality.

A solution is power distribution monitor-ing because it provides information fromthe utility substation all the way down to afractional HP motor…quickly and reliably,empowering maintenance and engineer-ing to take control of the distribution system.Data on energy consumption, maintenancerequirements, and troubleshooting are attheir fingertips, providing savings in bothtime and money. The Cutler-HammerIMPACC System uniquely interrogates theelectrical system for necessary firsthandinformation and displays it with easy-to-understand software.

Magnum DS 19

System Uptimeand Reliability

Information andSystems Integration

and retrofit services for existing equipment.A result is information that is used to assessthe on-line performance of an installedpower system, followed by intelligent actionto keep the system on-line and productive.Cutler-Hammer Engineering Services’engineers and technicians are supportedby 14 regional operation centers and over50 satellite locations in the United Statesand Canada.

More Information

Visit our Website

Magnum DS is accessible on-linethrough the Cutler-Hammer internetsite. Visit the Cutler-Hammer homepageat www.cutlerhammer.eaton.com andclick on Magnum DS.

Magnum DS Literature

Additional product literature is avail-able from your local Cutler-Hammersales office.

Magnum DS SwitchgearProduct Aid (PA.44A.01.S.E) –A two-page presentation of inno-vative switchgear design fea-tures, benefits, and ratings.

Magnum DS Breaker ProductAid (PA.22F.01.S.E) –␣Bulletizedtwo-page format, includingunique breaker features, ratings,and dimensional data.

Magnum DS Metal-Enclosed LowVoltage Switchgear TechnicalData (TD.44A.01.T.E) – An in-depth presentation of switch-gear ratings, application, andlayout information.

Magnum DS Product Guide(PG.22F.01.S.E) – Detailed mate-rial on Magnum DS functions,technology, ratings, dimensions,and ordering information.

Cutler-Hammer Sales Offices

For a detailed presentation on the addi-tional benefits and cost savings thatMagnum DS can create for you, calltoll free 1 800-525-2000 or 732-417-5660for the location and phone number ofyour nearest Cutler-Hammer salesoffice or distributor.

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Publication No. B.44A.01.S.EMay, 1998Printed in U.S.A. / CMS 2264

Cutler-Hammer Pittsburgh, Pennsylvania

Cutler-Hammer, a part of Eaton Corporation, is a leader in the developmentand manufacturing of power distribution equipment, electrical control products,and advanced industrial automation solutions.

For more information on Cutler-Hammer products and services,call 1-800-525-2000 or 1-732-417-5660, or visit our website atwww.cutlerhammer.eaton.com

MAGNUM DSLOW VOLTAGE POWER CIRCUIT BREAKERS

AND METAL-ENCLOSED SWITCHGEAR

Achieving the Industry’s HighestANSI Interruption and Short Time Ratings

In a New Compact Design

B44

A01

SE

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achieving the industry’s highest for more information on ......ansi c37.20.1 nema sg3 ansi c37.51...

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