kirk® key interlock terminologypdf.kirkkey.com/websiteimages/downloads/hd product series...hd...

HD SERIES - SPECIFICATION DATA SHEET 4.1

Kirk Key Interlock Company9048 Meridian Circle NW, North Canton, OH 44720

Phone: 234.209.9301 • Fax: 330.497.4400 • Toll Free: 800.438.2442Email: [email protected]

www.kirkkey.com KIRK® Key Interlock Terminology

NOTES:1) Housing 4) Cylinder Combination Number2) Locking Bolt 5) Lock Cylinder3) Mounting Holes 6) Nameplate

What is a key interlock?A key interlock is a safety device applied to two or more moveable parts, preventing (or allowing) a movement oroperation of one part only when another part is locked in a predetermined position. KIRK® key interlocks operateon the principle that the key can be removed only when the locking bolt is in a predetermined position.

Important information required when ordering key interlocks:

• Which lock type will physically fit on each device in your application?

• How is the interlock scheme to work - what is the equipment sequence and various scenarios (if any)?

• What locking bolt length is required? Note: locking bolts are referenced in their withdrawn position and alwaysextend 3/4” when the key is turned.

• How many lock cylinders are required and what are the key removable positions?

• What is the name and location of the ultimate user of the interlocks? Kirk Key Interlock Company assigns keycylinder numbers based on this information and records that information for each ultimate user.

• Is coordination with other interlocks required? If so, are the other interlocks existing interlocks or will anothermanufacturer or contractor order interlocks for coordination?




www.kirkkey.com KIRK® Key Interlock TerminologySingle Cylinder Interlocks

The drawing above shows a single cylinder Type F interlock with key removable extended (E). When the lockingbolt is extended, the key is released. When the locking bolt is withdrawn, the key is trapped.

A cylinder designated key removable "E" will release the key when the locking bolt is in the extended position. Thisis by far the most common single cylinder interlock. A cylinder designated key removable "W" will release the keywhen the locking bolt is in the withdrawn position. This is less common and only seen under unique circumstances.

Key removable positions for multi-cylinder interlocks are shown on the following pages.




www.kirkkey.com KIRK® Key Interlock TerminologyTwo Cylinder Interlocks

The drawing above shows a two cylinder Type F interlock with keys removable extended (EE). When the lockingbolt is extended, both keys are released. When the locking bolt is withdrawn, both keys are trapped.

The drawing above shows a two cylinder Type F interlock with keys removable (WE). When the locking bolt isextended, the key closest to the locking bolt is trapped and the key farthest from the locking bolt is released. Whenthe locking bolt is withdrawn, the key nearest to the locking bolt is released and the key farthest from the lockingbolt is trapped.

When extending the the locking bolt of a multi-cylinder HD Series interlock, turn the key nearest the locking boltfirst. When withdrawing the locking bolt, turn the key farthest from the locking bolt first. All keys must be insertedand turned in sequence.




www.kirkkey.com KIRK® Key Interlock TerminologyThree Cylinder Interlocks

The drawing above shows a three cylinder Type F interlock with keys removable (WWE). When the locking bolt isextended, the two keys closest to the locking bolt are trapped and the key farthest from the locking bolt is released.When the locking bolt is withdrawn, the keys closest to the locking bolt are released and the key farthest from thelocking bolt is trapped.

The drawing above shows a three cylinder Type F interlock with keys removable (WEE). When the locking bolt isextended, the key closest to the locking bolt is trapped and the keys farthest from the locking bolt are released.When the locking bolt is withdrawn, the key closest to the locking bolt is released and the keys farthest from thelocking bolt are trapped.

When extending the the locking bolt of a multi-cylinder HD Series interlock, turn the key nearest the locking boltfirst. When withdrawing the locking bolt, turn the key farthest from the locking bolt first. All keys must be insertedand turned in sequence.




www.kirkkey.com Graphite Lubrication Kit

HD Series interlocks should be periodically lubricated with a small amount of dry powdered graphite. Do not use oilof any type as the oil will collect dirt and "gum up" the lock cylinder so that it will not operate.

Kirk Key Interlock Company offers a Graphite Lubrication Kit (part number GL-1) complete with instructions foruse. The powdered graphite is supplied in a plastic tube that can be "squeezed" to force a small amount ofgraphite behind the inner turn shaft and at the base of the lock bolt where it protrudes from the lock body. Turn thekey a few times in order to distribute the graphite behind the lock cylinder.

Apply a small amount of graphite to each lock cylinder as part of your regular maintenance program in order tokeep your interlocks working smoothly.

NOTE: Stainless steel dust covers should be utilized to protect the lock cylinders when located outdoors or in ademanding environment. Dust covers are available separately and can be easily added to any interlock.

If the interlock will not operate after following the above procedures, contact Kirk Key Interlock Company for aReturn Authorization Form and return the interlock to us for repair. Kirk Key Interlock Company will quickly repairand recondition all interlocks for a nominal cost.




www.kirkkey.com Interlock System Keys

KIRK® HD Series Key (part # S7006)

KIRK® HD Series keys are made from electropolished 316 stainless steel. The shaft driven design containsprecision drivers (dowel pins) configured to specific combinations. Each key has a gasket to prevent entry of dirt ormoisture into the interlock. HD Series keys can only be furnished to you by Kirk Key Interlock Company.

OPTIONSStamp Key Interchange – specify an alphanumeric code to be stamped on the cylinder face and the key (e.g. A1,A2, B1, etc). The key interchange can be up to five characters long.

Duplicate KeysEach HD Series interlock system is supplied with the precise number of keys specified. If extra (installation) keysare specified, the extra keys must be removed from the system after installation and destroyed orsecured/controlled by a responsible person.

If additional keys are required due to loss or damage, please:1. Print the Duplicate Key Release Form from our web site.2. Complete the form and sign your name.3. Fax the form and your purchase order to Kirk Key Interlock Company at (330) 833-1528 for immediate delivery.

Record KeepingWith our extensive record keeping dating back to 1945, you can rely on Kirk Key Interlock Company to coordinateand number your keys in coordination with existing equipment currently in service.

Caution: the existence of duplicate keys in a KIRK® key interlock system may compromise the safety of thesystem. To ensure correct operation of the KIRK® key interlock system, it is necessary to remove all loosely orremovably held keys before operating the equipment on which the interlocks are mounted. Keys removed from aninterlock system should be destroyed or retained by authorized personnel.




www.kirkkey.com Interlock System Keys

Notes:1) Key interchange (optional) - the key interchange is stamped on the back side (or finger side) of the key.2) Lock number - always stamped on key and lock. This number is assigned by Kirk Key Interlock Company unlessspecified when ordering. The lock number is stamped on the front side (or thumb side) of the key.3) Gasket - to prevent debris and moisture from entering interlock cylinder.




www.kirkkey.com Adapter Plates (Mounting Plates)Short D Plate

The Short D Plate (Part # S9001) is made of 316 stainless steel and fastened to the back of a single cylinder HDSeries Type D interlock to allow front mounting (see HD Series Data Sheet 1.4). The thickness of the Short D plateis 3/8”. To order this plate with your single cylinder HD Series Type D interlock, put the letter “P” in column fourteenof the interlock part number - reference the HD Series Ordering Guide.

NOTES:1) 3/8"-16 tapped holes for mounting (4).




www.kirkkey.com Adapter Plates (Mounting Plates)Long D Plate

The Long D Plate (Part # S9002) is made of 316 stainless steel and fastened to the back of a multi-cylinder HDSeries Type D interlock to allow front mounting (see HD Series Data Sheet 1.4). The thickness of the Long D Plateis 3/8”. To order this plate with your multi-cylinder HD Series Type D interlock, put the letter “P” in column fourteenof the interlock part number - reference the HD Series Ordering Guide.

NOTES:2) 3/8"-16 tapped holes for mounting (6).




www.kirkkey.com Adapter Plates (Mounting Plates)FN Plate

The FN Plate (Part # S9003) is made of 316 stainless steel and fastened to the end of a HD Series Type FNinterlock to allow alternative mounting scenarios. The thickness of the FN Plate is 1/4”. To order this plate with yourHD Series Type FN interlock, put the letter “P” in the appropriate column of the interlock part number - referencethe HD Series Ordering Guide. The plate (when ordered) will be bolted to your Type FN interlock.

NOTES:3) .406" (10.32mm) dia. holes for mounting bolts (2 holes).4) When ordering the FN Plate, consider adding 1/4” to the HD Series Type FN locking bolt length to compensatefor the thickness of the FN Plate.




www.kirkkey.com Mounting BoltsHex Head

Hex Head Mounting BoltsHex head mounting bolts made from 316 stainless steel are available. 316 stainless steel hex head mounting boltswill be supplied with HD Series interlocks when the letter "M" is shown in the appropriate column of the interlockpart number. Reference the HD Series Ordering Guide.

Standard mounting bolt lengths:a.) 3/8”-16 x 3/4” (for Type B)b.) 3/8”-16 x 1-3/4” (for Type F, T, D and DM)c.) 3/8”-16 x 2-1/4” (for Type D Latch Block & Type U lock)d.) 1/4”-20 x 5/8” (for Type FN and PPS)

Options:The 3/8”-16 hex head bolts can be provided with a through hole in which a sealing wire can be secured.




www.kirkkey.com Mounting BoltsTamperproof

Tamperproof Mounting BoltsTamperproof mounting bolts made from 316 stainless steel are available. 316 stainless steel Button Head Socketbolts will be supplied with HD Series interlocks when the letter "T" is shown in the appropriate column of theinterlock part number. Reference the HD Series Ordering Guide.

Standard tamperproof mounting bolt lengths:a.) 3/8”-16 x 3/4” (for Type B)b.) 3/8”-16 x 1-3/4” (for Type F, T, D and DM)c.) 3/8”-16 x 2-1/4” (for Type D Latch Block & Type U lock)d.) 1/4”-20 x 5/8” (for Type FN and PPS)




www.kirkkey.com Mounting BoltsTamperproof Tools

A tamperproof key tool or tamperproof bit tool is required to install the tamperproof mounting bolts.

• 3/8" Bolt Key (Part #21HKHKA) - shown at top of picture.

• 1/4" Bolt Key (Part #15HKHKA) - shown in middle of picture.

• 3/8" Bolt Bit (Part #21HKHB) - shown at bottom of picture.

• 1/4" Bolt Bit (Part #15HKHB) - similar to the 3/8" bolt bit shown above but fits 1/4" tamperproof mounting bolts.




www.kirkkey.com Dust Cover

Dust Covers protect the lock cylinder and key from adverse environmental conditions such as moisture, dirt, andsleet. The Dust Covers also protect the key from accidental damage. We highly recommend dust covers foroutdoor installations.

Flip Open Dust Cover (Part# SC4292)The Flip Open Dust Cover is hinged and held closed with spring tension. It is designed to protect the lock cylinderwhen the key is removed. The Flip Open Dust Cover is attached to the lock cylinder with a stainless steel setscrew.

To order dust covers with your interlocks put the letter "F" in the appropriate column of the interlock part number.Reference the HD Series Ordering Guide. Multi-cylinder interlocks will be supplied with a cover on each cylinder (ifspecified). The Flip Open Dust Cover is made from electropolished 316 stainless steel.




www.kirkkey.com Dust Cover

Notes:1) Optional key interchange stamp.2) Gasket.3) Set screw.4) Lock cylinder.

MD and HD SERIES - SPECIFICATION DATA SHEET 2.8A



www.kirkkey.com Type PPS - Panel Mounted SwitchMD and HD Series - Switch Ratings




www.kirkkey.com Type PPS - Panel Mounted Switch(20 Amp Shown)

The HD Series Power Panel Switch is a key actuated, rotary, two-position switch designed for isolation orswitching of control circuitry. It is available with switch ratings of 20, 25, 40, 63 or 100A. Perfectly suited forapplications requiring temporary off-load isolation. The switch is UL Listed and CSA Approved.

The PPS is designed so that the key will rotate 90 degrees clockwise to the trapped position. Rotation of the key toeither the trapped or to the released position will cause the switch contacts to change state.

The standard PPS can be panel mounted with 1/4” diameter (7mm) mounting bolts. The quantity and location ofthe mounting holes are shown on the drawings that follow.

An optional IP65 Polycarbonate enclosure allows surface mounting of the PPS using four bolts suitable for yourspecific application. Enclosure photo and drawing are shown on pg 3..

Standard switch contact arrangements are shown in the chart on pg 3. Consult the factory for other contactarrangements. Switch ratings and specifications are outlined on HD Series Data Sheet 2.8a.

The HD Series PPS key and lock body are made from electropolished 316 stainless steel.

OPTIONS: Switch Rating and Contact Arrangements–see chart on pg 2 and ordering guide on pg 4.

Mounting Options–Panel Mounting (standard) or Enclosed in an IP65 Polycarbonate enclosure. The enclosedversion is supplied with an (M20) .20-.35” cable gland and lock nut.

Stamp Key Interchange–Specify an alphanumeric code to be stamped on the key and optional cylinder cover (ifspecified). Can be up to five characters-e.g. A1, A2, K1, (etc.). See HD Series Data Sheet for Keys (3.4) andTerminology (4.1) for details.

Dust Cover – See HD Series Data Sheet 3.1 for details.

Mounting Bolts – See HD Series Data Sheet 3.2 for details.




www.kirkkey.com Type PPS - Panel Mounted Switch(20 Amp Shown)




www.kirkkey.com Type PPS - Panel Mounted SwitchHD Series - Ordering Guide




www.kirkkey.com Type S Auxiliary Switches

Type S Auxiliary Switches are slow-make, slow-break devices that respond directly to the movement of the lockbolt when the key is rotated. One, two, three or four sets of contacts are available. The Type S auxiliary switchescan be furnished on the following interlocks:

• Type F (see HD Series Data Sheet 1.1)• Type B (see HD Series Data Sheet 1.2)• Type T (see HD Series Data Sheet 1.3)• Type D (see HD Series Data Sheet 1.4)

Primary uses:• Disconnect switches in control circuits.• Indicate key/lock status to SCADA and other monitoring systems.

See Table 1 (page 3) for current ratings.

When ordering the S Switch option, please put the appropriate number in column 4 of the interlock part number:

"3" = Type S = 1 set of contacts"4" = Type SS = 2 sets of contacts"5" = Type SSS = 3 sets of contacts"6" = Type SSSS = 4 sets of contacts

Reference the HD Series Ordering Guide and Table 2 (page 3).

The switch is normally mounted with the cover on the same side as the lock cylinder. If necessary, the switch canbe mounted so that the switch cover is facing backwards (or "Reversed"), allowing access to the switch for aninterlock that is mounted on the back of a panel. To order the "Reverse Switch Housing" option, put the letter "R" incolumn 15 of the part number. Reference the HD Series Ordering Guide. Unless specified, the switch housing willbe mounted in the normal arrangement.

Note: Auxiliary switches cannot be field installed on existing KIRK® interlocks.





NOTES:1) 3/4” Conduit opening on S Switch.2) 1” Conduit opening on SS, SSS & SSSS Switch.3) SSS Switch front view – 3 make & 3 break contacts.4) SSSS Switch front view – 4 make & 4 break contacts.5) Cover. Left drawing shows normal Type S switch mounting. Right drawing shows reverse Type S switchmounting.





NOTES:The drawing on the left shows a Type F interlock with a Type SS switch. The locking bolt is in the extendedposition with the key removed. The sets of contacts in position 1 (closest to the lock cylinder) and position 3 areclosed. The sets of contacts in postions 2 and 4 are open.

The drawing on the right shows a Type F interlock with a Type SS switch. The locking bolt is in the withdrawnpostion and the key is trapped. The sets of contacts in postions 2 and 4 are now closed, while the sets of contactsin positions 1 and 3 are now open.




www.kirkkey.com Type Thermoplastic Bodied Switch

Thermoplastic bodied electrical contacts offer the best protection against water ingress. These auxiliary contactsare available for four styles of the HD Series mechanical bolt interlocks and two styles of access interlocks:

Mechanical Bolt Interlocks: Access Interlocks:• Type F (HD Series Data Sheet 1.1) • Type D (HD Series Data Sheet 1.4)• Type B (HD Series Data Sheet 1.2) • Type DM (HD Series Data Sheet 1.5)• Type T (HD Series Data Sheet 1.3)• Type FN (HD Series Data Sheet 1.7)

The contacts can be used to provide remote indication of the locking bolt position or to switch control circuitry.

Contact Status for Type F, B, T, FN & D: (Page 3)The contacts respond directly to the movement of the locking bolt when the key is turned. Option A comes with 2N/O & 1 N/C 5 amp contacts. Option B comes with 4 N/O & 2 N/C 5 amp contacts (two switches mounted side byside). The contacts change state when the key is turned and the locking bolt is extended. Please reference thedrawing on page 3.

To order the auxiliary contact option, put "A" or "B" in the appropriate column of the interlock part number.Reference the HD Series Ordering Guide and the drawing on page 3.

Contact Status for Type DM: (Page 4)The contacts respond to the position of the DM latch bolt. When the door is locked, two sets of contacts are closedand one set is open. When the door is unlocked, the contacts switch state (two sets open, one set closed). NOTE:Option B is not available on the Type DM.




www.kirkkey.com Type Thermoplastic Bodied Switch

• Standards: VDE 0660 T200, DIN EN 60947-5-1, IEC 60947-5-1.• Utilization Category: AC-15, Ue/Ie 240V/1,5A.• Approvals: cCSAus B300 (same polarity).• Enclosure & Cover: Thermoplastic, glass fibre reinforced (UL 94-V0).

• Hinged Snap Lid: For quick and easy access (screwdriver release). Lid hinges open to 135 degrees.

• Forced Disconnection of NC Contacts: To IEC/EN 60947-5-1, Annex K.

• Temperature Range: -30 degrees C (ice free) to +80 degrees C.

• Mechanical Lifecycle: 200,000 operations.

• Screw Terminals: Self-lifting clamps for easy wiring, Numbered in accordance with DIN EN 50013.

• Ingress Protection: IP65 acc. to EN 60529.

• Rated Insulation Voltage: 250V AC.• Rated Operational Voltage: 240V.• Continuous Thermal Current: 5 Amp.

• Cable Entrance: M20 x 1.5 thread. The switch is supplied with .20 -.35” cable gland installed. An M20 x 1/2” FIPadapter is supplied with each switch for use with 1/2” conduit.

• EU Conformity: CE Marked

• Weight: The A Option adds 9.6oz / 272g and the B Options adds 16oz / 453g to the weight of an interlock.




www.kirkkey.com Type Thermoplastic Bodied Switchon Type F, B, T, FN & D Interlocks

NOTES:Option A is shown on the left, Option B is shown on the right.




www.kirkkey.com Type Thermoplastic Bodied Switchon Type DM Interlocks


Kirk Key Interlock Company211 Wetmore Ave. S.E., Massillon, OH 44646


www.kirkkey.com Type TPS - Sub-Panel Mounted Switch

The Type TPS interlock is a key actuated switch utilizing two tandem mounted Square D Class 9001 KA1 contactblocks and it is designed for back panel mounting (sub-panel). The Type TPS can be installed so the lock cylinderwill protrude 5/8" or flush mounted (by use of spacers).

The Type TPS has 2 N.O. & 2 N.C. contacts. The contact blocks are UL listed. Additional contacts are available -see options below.

The switch rating is:• 120VAC - 60A make / 6A break / 10A continuous• 240VAC - 30A make / 3A break / 10A continuous• 125VDC - 0.55A make & break / 2.5A continuous

The lock cylinder and key are made from electropolished 316 stainless steel. The interlock body is made frombrass and the mounting plate is made from aluminum.

OPTIONS• Contacts - 4 N.O. & 4 N.C. (Type TPSS). If TPSS is ordered, a second set of contact blocks will be stacked ontop of the first set of contact blocks.

• Stamp Key Interchange – specify an alphanumeric code to be stamped on the cylinder face and the key (e.g. A1,A2, B1, etc). See HD Series Data Sheets 3.4 and 4.1 for details.

• Multi-Cylinder - up to 2 cylinders available (M2TPS). Note: The 2-cylinder TPS is available with both keysremovable at the same time or 1 key in and 1 key out. Please specify at time of order. See HD Series OrderingGuide.

• Dust Covers - see HD Series Data Sheet 3.1 for details.• Mounting Bolts - see HD Series Data Sheet 3.2 for details.• Spacers – stainless steel spacers for flush mounting. Spacers are 1/2” long (12.7mm) x 5/8” (15.875mm)diameter.


Kirk Key Interlock Company211 Wetmore Ave. S.E., Massillon, OH 44646


www.kirkkey.com Type TPS - Sub-Panel Mounted Switch

NOTES:1) 1/4"-20 tapped mounting holes.2) Length of 3.75” (95.25mm) applies to Type TPS. Type TPSS is 4.75” (120.65mm) long.3) Optional spacers (for flush mounting).

HD SERIES – SPECIFICATION DATA SHEET 1.31


Phone: 234.209.9301 • Fax: 330.497.4400 • Toll Free: 800.438.2442Website: www.kirkkey.com Email: [email protected]

Type NLTU - Nonlinear Transfer Unit

The Nonlinear Transfer Unit is designed for use when nonlinear key interlock operational sequences are required.The selector knob on the right hand end of the unit can be set-up during manufacturing to suit specific operationalrequirements, only releasing keys as needed in a set sequence. The number of key entries, key releases, andsequence steps can be specified to suit individual applications. The Nonlinear Transfer Unit can be built with up to8 sequence steps. The unit is housed in aluminum.

OPTIONS• Multi-Cylinder – up to 8 cylinders available.• Dust Covers – see HD Series Data Sheet for Dust Covers (3.1) for details.

HD SERIES – SPECIFICATION DATA SHEET 1.31


Phone: 234.209.9301 • Fax: 330.497.4400 • Toll Free: 800.438.2442Website: www.kirkkey.com Email: [email protected]

Type NLTU - Nonlinear Transfer Unit




www.kirkkey.com Type DC - Panel Door Interlock

A Type DC interlock has two parts: a lock body and a catch. The catch is available in two styles, one suited to wellaligned doors, the other suited to mis-aligned doors. The lock body is typically attached to a door or gate thatswings open. The catch is typically attached to the door frame. The DC interlock is designed for use on light dutypanel doors in dry, non-corrosive environments where the interlock is subject to light to medium use.

When the key is turned and the door is opened, the lock body and catch are separated causing the key to becometrapped in the lock. The key is held in the interlock as long as the door is open. When the door is properly closed,the catch seats fully into the lock body allowing the key to be turned and released, thereby locking the door closed.

The standard Type DC interlock is designed to accept the catch from the rear (or back) of the lock body.

All parts of the Type DC interlock are made from 316 stainless steel.

OPTIONS:Catch Type - Optional spring mounted catch (Flex Catch) is available for badly mis-aligned doors.

Front Catch Option - The Type DC interlock is available with a front entry catch for applications where the door orgate opens by swinging inwards.

Stamp Key Interchange - specify an alphanumeric code to be stamped on the cylinder face and the key (e.g. A1,A2, B1, etc. - up to 5 characters). See HD Data Sheet for Keys (3.4) and Terminology (4.1) for details.





OPTIONS (Continued)

Dust Covers – see HD Series Data Sheet for Dust Covers (3.1) for details.

Mounting Bolts – see HD Series Data Sheet for Mounting Bolts (3.2) for details.

Opposite Hand – The photos show a typical “right-handed” Type DC interlock – the interlock body is on the right-hand side of the catch. If your application requires the catch to be on the left side of the lock body, specify“opposite hand” when ordering the type DC interlock. See the HD Series Ordering Guide and HD Series DataSheet on Terminology (4.1) for details.

Caution: The Type DC interlock should not be used to align the door, or to be the only latching means for holdingthe door in the closed position.





NOTES:1) 0.4062" (10.32mm) Holes for Mounting Bolts (2 Holes)2) 0.277" (7mm) Countersunk Holes (2 Holes) in Standard Catch3) 0.277" (7mm) Holes for Mounting Bolts (2 Holes) in Flex Catch




www.kirkkey.com Type SA3Switchgear Adapter Interlock

The HD Series SA3 Switchgear Adapter Interlock has a 5/16” (8mm) square, 3/8” (9.5mm) long shaft that iscontrolled by the robust HD Series key. The SA3 is attached to the interlock provisions by way of (4) 10-32 tappedholes in the bottom of the lock cylinder. The interlock can be ordered with the shaft rotating clockwise orcounterclockwise. Multiple degrees of rotation are available also.

All components of the lock body and they key are made from electropolished 316 stainless steel.

OPTIONS• Rotation to Trap Key – clockwise or counterclockwise.

• Degree of Rotation – 45, 65, 90 or 120 degrees are possible.

• Shaft Size - 5/16” (8mm) square is standard. Other sizes are available – please specify.

• Shaft Length - 3/8” (9.5mm) is standard. Other lengths are available – please specify.

• Stamp Key Interchange - specify an alphanumeric code to be stamped on the key (e.g. A1, A2, B1, etc. - up to 5characters). See HD Series Data Sheet for Keys (3.4) and Terminology (4.1) for details.

• Dust Covers - see HD Series Data Sheet for Dust Covers (3.1) for details.




www.kirkkey.com Type SA3Switchgear Adapter Interlock




www.kirkkey.com Type SA1 & SA2Switchgear Adapter Interlock

The HD Series Type SA1 and SA2 switchgear adapter interlocks have a 3/8” (9.5mm) square, 7/8” (22mm) longshaft that is controlled by the robust HD Series key. The mounting flange will accept two 1/4” (7mm) mountingbolts. Type SA1 and SA2 interlocks can be ordered with the shaft rotating clockwise or counterclockwise. Multipledegrees of rotation are available also.

All components of the lock body and the key are made from electropolished 316 stainless steel.

OPTIONS• Style – SA1 or SA2 mounting. See drawing on page 2 and the HD Series Switchgear Adapter Interlock OrderingGuide on page 3.

• Rotation to Trap Key – clockwise or counterclockwise.

• Degree of Rotation – 45, 65, 90 or 120 degrees are possible.

• Shaft Size - 3/8” (9.5mm) square is standard. Other sizes are available – please specify.

• Shaft Length - 7/8” (22mm) is standard. Other lengths are available – please specify.

• Stamp Key Interchange - specify an alphanumeric code to be stamped on the key (e.g. A1, A2, B1, etc. - up to 5characters). See HD Series Data Sheet for Keys (3.4) and Terminology (4.1) for details.






NOTES:1) Type SA1 mounting.2) Type SA2 mounting.




www.kirkkey.com Type U - End Mounted

The Type U interlock is designed for applications where space is limited. It can be fastened through the lock bodywith 3/8” bolts or panel mounted with 10-32 bolts from the bottom of the lock body.

All components are constructed from electropolished 316 stainless steel. The throw, or travel, of the 5/8 inchdiameter locking bolt is 3/4". Locking bolt movement is completely controlled by the rotation of the key.

OPTIONS• Locking Bolt Length - when ordering, specify the length of the locking bolt in the withdrawn position. Standardlengths are 1/4", 3/8", 1/2", 3/4”, 1", 2", and 3". Non-standard lengths are also available. (1” Lock Bolt shown ondrawing)

• Key Removable - the key is removable when the locking bolt is either in the extended "E" or withdrawn "W"position. Please choose "E" or "W" when ordering an interlock. Key removable extended is the most commonbecause the locking bolt is typically extended to block/engage something.

• Stamp Key Interchange - specify an alphanumeric code to be stamped on the cylinder face and the key (e.g. A1,A2, B1, etc. - up to 5 characters). See HD Series Data Sheet for Keys (3.4) and Terminology (4.1) for details.


• Mounting Bolts - see HD Series Data Sheet for Mounting Bolts (3.2) for details.




www.kirkkey.com Type U - End Mounted

NOTES:1) 0.4062” (10.32mm) holes for mounting bolts.2) 10-32 tapped holes (2) places.




www.kirkkey.com Type FN - Front (Narrow) Mounted

The Type FN interlock has a more narrow housing than the Type F interlock and is mounted by means of 1/4"-20tapped holes in the end of the housing. All components are constructed from electropolished 316 stainless steel.The lock bolt is 5/8" diameter and the throw, or travel, of the lock bolt is 3/4". Lock bolt movement is completelycontrolled by the rotation of the key.

OPTIONS• Locking Bolt Length - when ordering, specify the length of the locking bolt in the withdrawn position. Standardlengths are 1/4", 3/8", 1/2", 3/4”, 1", 2", and 3". Non-standard lengths are also available. (1” Lock Bolt shown ondrawing)

• Key Removable - the key is removable when the locking bolt is either in the extended "E" or withdrawn "W"position. Please choose "E" or "W" when ordering an interlock. Key removable extended is the most commonbecause the locking bolt is typically extended to block/engage something.


• Auxiliary Switches - see HD Series Data Sheets for Type Thermoplastic (2.3).


• Mounting Bolts - 1/4"-20 x 5/8" hex head made of stainless steel. See HD Series Data Sheet for Mounting Bolts(3.2) for details.

• Adapter Plate - allows additional mounting options. See HD Series Data Sheet for Adapter Plates (3.3 - FN Plate,pg. 3) for more details.




www.kirkkey.com Type FN - Front (Narrow) Mounted

NOTES:1) 1/4”-20 x 3/8” (9.525mm) deep for mounting (2 holes).2) Optional FN adapter plate (see HD Series Data Sheet 3.3 for details).




www.kirkkey.com Interlock Transfer Panel

The Transfer Panel is an exchange point in which the final keys of one or more interlock sequences are exchangedfor one or more different keys for additional operations.

All primary (initiating) keys must be inserted into the transfer panel before any secondary (retained) keys can beturned and removed. Once a secondary key is removed, all primary keys are held captive in the transfer panel.

Transfer panel primary keys are generally related to power sources (such as breakers, T/R switches, leveldetectors, etc.) and secondary keys are often associated with access doors.

Transfer keys, locks, and all mechanical parts are completely enclosed in a NEMA 12 enclosure.

HD Series Transfer Panels are designed to accept and release keys sequentially. Insert and turn the missing keys(one at a time starting from the end) and work your way towards the held keys. The held keys will be released (oneat a time) in a continuation of the same sequence. Reverse the key sequence when restoring service.

OPTIONS• Key Sequence - When ordering, specify the number of primary and secondary keys. Primary keys are removedfrom the transfer panel and retained in other interlocks. Secondary keys are held in the transfer panel.

• Enclosure - NEMA 4 and NEMA 4X are available. Please specify the NEMA rating of the enclosure.

• Number of Locks - See table on page 3 for details.





www.kirkkey.com Interlock Transfer Panel

Transfer Panels are available in many sizes. Contact Kirk Key Interlock Company for more information.

HD SERIES - SPECIFICATION DATA SHEET 1.5B



www.kirkkey.com Type DM - Mounting OptionsDM2 Adapter Plate

DM2 Adapter Plate (Part # 122161001)

The DM2 adapter plate is designed to allow easy replacement of Type DY2 interlocks with Type DM interlocks.Because of the large number of Type DY2 interlocks installed in the field, we recognized a need for a mountingplate that will accommodate the Type DM interlock. The Type DM interlock will bolt to the DM2 adapter plate with3/8-16 x 1-3/4” bolts.

The DM2 adapter plate is made from zinc plated steel and can be bolted or welded to your door or door jamb.




www.kirkkey.com Type DM - Mounting OptionsDM2 Adapter Plate

NOTES:1) .2031” (5.159mm) diameter holes (4).2) 3/8”-16 tapped holes (2).




www.kirkkey.com Type DM - Mounting OptionsDM4 Mounting Plate

DM4 Mounting Plate(Part # S42963001 – 304 Stainless Steel)(Part # S42963002 – 1018 Steel)

The DM4 mounting plate can be welded to a door or a door frame. The Type DM interlock will bolt to the DM4mounting plate with 3/8-16 x 2-1/4” bolts.

The DM4 mounting plate is available in 1018 steel or 304 stainless steel.




www.kirkkey.com Type DM - Mounting OptionsDM4 Mounting Plate

NOTES:3) 0.4062” (10.32mm) holes for mounting bolts (2 holes).

HD SERIES - SPECIFICATION DATA SHEET 1.5A



www.kirkkey.com Type DM - Latch Bolt Options

DM Latch Bolt with Spring & Mounting Bracket(Part # S42955A00)

The optional Type DM latch bolt with spring and mounting bracket offers mounting alternatives for the Type DMInterlock. The mounting bracket is designed to hold the latch bolt in close proximity to the DM lock body. Afterinserting and turning the key, the latch bolt can be rotated 1/4 turn to be released from the lock – thereby trappingthe key.

A sliding door or gate is a good application for this style of latch bolt.

All components of the S42955A00 DM latch bolt are made from electropolished 316 stainless steel.

To order the latch bolt with spring and mounting bracket just specify the partnumber S42955A00 latch bolt with your Type DM interlocks.





NOTES:1) 0.406” (10.3mm) x .75" (19.05mm) slotted holes for mounting bolts (2 holes).2) Recommended Spacing: 13/16” (20.64mm) min, 1 1/4” (31.75mm) max.3) Latched - key released.4) Unlatched - key trapped.





. Door or Hatch

. Sliding Door or Gate




www.kirkkey.com Type DM - Access Door Interlock

The Type DM access door interlock is designed for hinged doors, manhole covers, sliding doors or any sort ofhatch or lid. It is well suited for loose fitting doors or hatches that will not accommodate a precise fitting door lock.

The Type DM consists of a main body and a latch bolt with twelve links of 316 stainless steel chain. The lock bodycan be mounted to the equipment and the chain can be bolted or welded to the door or hatch with the properamount of “slack” for the latch bolt to reach the DM lock body.

Under normal conditions the key is upstream in the interlock scheme and the chain/bolt is trapped in the locksecuring the door in the closed position. The latch bolt cannot be released until the key is inserted and turned. Onlythen can the latch bolt be rotated 1/4 turn and released from the lock thereby trapping the key. The door or hatchmust be closed and the latch bolt must be returned to the lock body in order to free the key.

All components of the HD Series Type DM interlock are made from electropolished 316 stainless steel. The latchbolt has a gasket to protect against the introduction of dust and dirt into the lock body.

OPTIONS

• Key Removable - the single cylinder Type DM is always built key removable “E", which means the key is releasedonly when the latch bolt is trapped in the lock body (door locked).

• Multi-Cylinder - up to 2 cylinders available. The first cylinder will always be "E" (see above). A two cylinder DMinterlock requiring two keys to unlock should be designated "E" for both cylinders. If the second cylinder of a twocylinder DM is to provide a "Personnel Key" that is available when the door is unlocked, designate that cylinder askey removable "W". ("E" keys are trapped when the door is unlocked, "W" keys are trapped when the door islocked.)





OPTIONS (Continued)


• Latch Bolt with Spring and Mounting Bracket - seen in photo above. See HD Series Data Sheet for Type DM -Latch Bolt Options (1.5A) for details.

• Auxiliary Switches - see HD Series Data Sheet for Type Thermoplastic (2.3) for details.



• DM2 and DM4 Adapter Plates – see HD Series Data Sheet for Type DM- Mounting Options (1.5B) for details.

Caution: The Type DM interlock should not be used as the latching means for holding the door, hatch, or cover inthe closed position.





NOTES:1) 0.4062” (10.32mm) holes (2) for mounting bolts.2) 12 links of chain (approx. 11”). Field weld chain to door or jamb. Allow 1” (25.4mm) slack.3) 1” (25.4mm) diameter collar and gasket.

Caution: The Type DM interlock should not be used as the latching means for holding the door, hatch, or cover inthe closed position.




www.kirkkey.com Type D - Door Mounted (Detachable)

A Type D interlock has two parts: a main body with one or more cylinders and a latch block. The main body istypically attached to a door or hatch that swings open. The latch block is typically bolted to the door frame. Whenthe key is turned and the door is opened, the main body and latch block are separated causing the key to betrapped and the locking bolt to be held in the withdrawn position. The key is always held in the Type D interlockwhenever the two parts are separated. When the door is properly closed, the lock body seats fully against thelatch block, releasing the locking bolt. The operating key can now be rotated to extend the locking bolt into thelatch block. After the locking bolt is fully extended, the operating key may be removed. The interlock housing andlatch block are made from electropolished 316 stainless steel. The lock bolt is made from 5/8 inch diameter 316stainless steel.

OPTIONS• Key Removable - a single cylinder Type D interlock is always built key removable "E" which means the key isreleased only when the lock bolt is extended into the latch block (door closed).

• Multi-Cylinder - up to 3 cylinders available. A multi-cylinder Type D requiring all keys to unlock the door shouldhave each cylinder designated "E". Any cylinders that are designated "W" will release a key when the door isunlocked - such as a personnel key. Note that HD series Type D interlocks with "W" keys will be built with the "W"keys located nearest the locking bolt. ("W" keys are trapped when the door is locked - "E" keys are trapped whenthe door is unlocked.)





OPTIONS (Continued)


• Auxiliary Switches - see HD Series Data Sheets for Type Thermoplastic (2.3) and Type S (2.4) for details.



• Adapter Plate - An adapter plate can be fastened to the housing to allow frontmounting. See drawing on page 3 of this data sheet, as well as HD Series Data Sheet for Adapter Plates (3.3).





NOTES:1) 0.4062” (10.32mm) holes for mounting bolts.2) 1/2-13 thread tapped 1/2” from bottom.3) Optional adapter plate shown (see HD Series Data Sheet 3.3 for details).

Caution: The Type D interlock should not be used to align the door, or to be the latching means for holding thedoor in the closed position.





NOTES:1) Shown with optional adapter plate. The Type D interlock can be mounted on either flat or reinforced doors (frontand back mounted). See HD Series Data Sheet for Adapter Plates (3.3) for more details.




www.kirkkey.com Type T - Key Transfer Block

The Type T interlock is an assembly of two or more lock cylinders in a single housing. Type T interlocks aredesigned to retain one or more keys (called held keys) while the remaining (initiating) key(s) are removed. Thisallows an exchange of keys in an interlock sequence. All initiating keys must be inserted into the Type T interlockbefore the held keys can be removed. Once a held key is removed, the initiating keys are trapped in the interlock.

Type T interlocks are transfer blocks since they do not have a lock bolt projecting through the housing. Often theneed for a transfer block can be eliminated by using multi-cylinder interlocks mounted on other devices, making itunnecessary to go through an additional transfer block operation.

All components of the HD Series Type T interlock are made from electropolished 316 stainless steel.

OPTIONS• Key Removable - specify which key(s) are initiating ("E") and which key(s) are held ("W").

• Multi-Cylinder - up to 3 cylinders available.


• Auxiliary Switches - see HD Series Data Sheets for Type Thermoplastic (2.3) and Type S (2.4) for details.






www.kirkkey.com Type T - Key Transfer Block





www.kirkkey.com Type B - Base Mounted

The Type B interlock is base or flange mounted. Many switch, T/R and level detector manufacturers offerprovisions for mounting Type B interlocks.

All components are made from from electropolished 316 stainless steel. The lock bolt is 5/8" diameter and thethrow, or travel, of the lock bolt is 3/4". Lock bolt movement is completely controlled by the rotation of the key (orkeys in a multi-cylinder interlock).

OPTIONSLock Bolt Length - when ordering, specify the length of the locking bolt inthe withdrawn position. Standard lengths are 0", 1/4", 3/8", 1/2", 3/4",1", 2" and 3". Non-standard lengths are also available.

Key Removable - the key(s) is removable when the locking bolt is either in the extended (E) or withdrawn (W)position. Please choose E or W when ordering an interlock. NOTE: Key removable E is the most common becausethe locking bolt is typically extended to block/engage something.

Multi-Cylinder - up to 3 cylinders available. Please specify E or W key removable position for each cylinder.NOTE: On HD Series Type B Interlocks, "W" cylinders will be located nearest the locking bolt.

• Stamp Key Interchange - specify an alphanumeric code to be stamped on the cylinder face and the key (e.g. A1,A2, B1, etc. - up to 5 characters). See HD Series Data Sheet for Keys (3.4) and Terminology (4.1) for details.• Auxiliary Switches - see HD Series Data Sheets for Type Thermoplastic (2.3) and Type S (2.4) for details.• Dust Covers - see HD Series Data Sheet for Dust Covers (3.1) for details.• Mounting Bolts - see HD Series Data Sheet for Mounting Bolts (3.2) for details.




www.kirkkey.com Type B - Base Mounted

NOTES:1) 0.4062” (10.32mm) holes for mounting bolts.




www.kirkkey.com Type F - Flat Mounted

The Type F interlock is generally flat or face mounted with bolts through the front of the housing. Many breaker,switch and T/R manufacturers offer provisions for mounting Type F interlocks.

All components of the HD Series Type F interlock are made from electropolished316 stainless steel. The locking bolt is 5/8" diameter and the throw, or travel, of the locking bolt is 3/4”. Lock boltmovement is completely controlled by the rotation of the key (or keys in multicylinder interlocks).

OPTIONSLocking Bolt Length – When ordering, specify the length of the locking bolt in the withdrawn position. Standardlengths are 0", 1/4", 3/8", 1/2", 3/4”, 1", 2", and 3". Non-standard lengths are also available (1” lock bolt shown ondrawing).

Key Removable - the key(s) is removable when the locking bolt is either in the extended (E) or withdrawn (W)position. Please choose E or W when ordering an interlock. NOTE: Key removable extended is the most commonbecause the locking bolt is typically extended to block/engage something.

Multi-Cylinder - up to 3 cylinders available. Please specify E or W key removable position for each cylinder.NOTE: On HD Series Type F interlocks, "W" cylinders will be located nearest the locking bolt.

• Stamp Key Interchange - specify an alphanumeric code to be stamped on the cylinder face and the key (e.g. A1,A2, B1, etc. - up to 5 characters). See HD Series Data Sheet for Keys (3.4) and Terminology (4.1) for details.• Auxiliary Switches - see HD Series Data Sheets for Type Thermoplastic (2.3) and Type S (2.4) for details.• Dust Covers - see HD Series Data Sheet for Dust Covers (3.1) for details.• Mounting Bolts - see HD Series Data Sheet for Mounting Bolts (3.2) for details.




www.kirkkey.com Type F - Flat Mounted


kirk® key interlock terminologypdf.kirkkey.com/websiteimages/downloads/hd product series...hd...

Documents