EmErgEncy UL924 Bypass / shUnt rELays

DEscriptionOur UL924 Emergency Bypass/Shunt Relays are designed for applications that require an emergen-cy load to be switched on during a loss of normal power. These economically priced relays are avail-able prepackaged in their own NEMA 1 enclosure or panel versions to be installed inside an existing enclosure.

Models can be ordered with a two position closed/auto override test switch or with a custom two position momentary on/auto override test switch. These switches can be used to verify your emergency load is being switched properly during initial field wiring.

opErationUL 924 Emergency Bypass/Shunt relays will switch a lighting load upon loss of normal power downstream of an emergency transfer switch, bypassing wall switch position (or any lighting control.) This ensures emergency lighting will be on during power loss.

FEatUrEs• Multi-coil voltage input• 10, 15, 20 Amp Contact Ratings• Two position override test switch available• Custom two position momentary override test switch available• NEMA 1 enclosure• Pre wired and prepackaged for convenience• Red LED utility power indicator• Mounts easily through ½” knockout or remotely on flat surfaces• Bright yellow color for easy identification• Panel style for use inside control panels• UL 924 & California State Fire Marshall• DPDT configurations • 5 year warranty • Made in USA

spEciFicationsSee reverse side.

Functional Devices, Inc.310 South Union StreetP.O. Box 368Russiaville, IN 46979

OfficeSales FaxEmail

765.883.5538800.888.5538765.883.7505sales@functionaldevices.com

notEs

Initial Field Wiring Test Procedure Models that have override test switches are set in the auto position from the factory. This allows emergency power to be switched to the load. To test field wiring connections at the time of installation, the override test switch should be changed to the “closed” posi-tion (illuminating emergency lighting) and then placed back to the “auto” position. The red LED shows the normal utility power is connected correctly.

Shunt Relay ApplicationsOur Emergency Bypass / Shunt Relays are UL924 listed and suitable for shunting around wall switches in order to turn on emergency lighting in the event of loss of normal utility power.

When normal power is present, the ESR relay coil is activated and the emergency panel is fed from normal power. The lighting load can be switched on/off using an individual wall switch.

When normal power drops out, the ESR coil is deactivated and N/C contact falls closed. The automatic transfer switch changes over to backup (generator) power, and the lighting load is illuminated regardless of the position of the wall switch.

EmergencyPanel

NormalPanel

NormalNeutral

NormalBreaker

EmergencyNeutral

EmergencyBreaker

AutomaticTransferSwitch

Generatoror Inverter

Neutral

Generatoror Inverter

Hot

Utility Hot

UtilityNeutral

Wall Switch

Coil

EmergencyBypass / Shunt

Relay

N/CContact

Neutral to Load

Hot to Load

Standard Shunt Application

# Relays & Contact Type:Expected Relay Life:

Operating Temperature:Operate Time:

Relay Status:Dimensions:

Wires:Approvals:

Housing Rating:Gold Flash:

Override (Test Switch):

One (1) SPDT Continuous Duty Coil10 million cycles minimum mechanical-30 to 140° F20mSLED On = Activated1.70˝ x 2.80˝ x 1.50˝ with .50˝ NPT Nipple16˝, 600V RatedUL Listed, UL924, C-UL, CEPlenum, NEMA 1YesNo

Contact Ratings: 10 Amp Resistive @ 120-277 Vac10 Amp Resistive @ 28 Vdc480 VA Pilot Duty @ 240-277 Vac480 VA Ballast @ 277 Vac600 Watt Tungsten @ 120 Vac N/O240 Watt Tungsten @ 120 Vac N/C1/3 HP for N/O @ 120-240 Vac1/6 HP for N/C @ 120-240 Vac1/4 HP for N/O @ 277 Vac1/8 HP for N/C @ 277 Vac

Coil Current: 33 mA @ 10 Vac35 mA @ 12 Vac46 mA @ 24 Vac55 mA @ 30 Vac28 mA @ 120 Vac

13 mA @ 10 Vdc 15 mA @ 12 Vdc18 mA @ 24 Vdc20 mA @ 30 Vdc

Coil Voltage Input: 10-30 Vac/dc ; 120 Vac ; 50-60 HzDrop Out = 2.1 Vac / 2.8 VdcPull In = 9 Vac / 10 Vdc

Wht/Blk120 Vac

Wht/Blu10-30 Vac/dc

Wht/YelComm

BluN/C

YelComm

OrgN/O

SPECIFICATIONS

UL924 / 10 amp EmErgEncy Bypass/shUnt rELayEnclosed Relay 10 Amp SPDT with 10-30 Vac/dc/120 Vac CoilESRU1C

(Not a wiring diagram for specific relay above. See wiring diagrams on next page.)

ESR2401B^

Wht/Blk 120 Vac

Wht/Blu 24 Vac/dc

Wht/YelComm

BluN/C

YelComm

OrgN/O

COIL INPUT RATINGS 24 Vdc @ 32 mA max30 Vdc @ 42 mA max24 Vac @ 75 mA max120 Vac @ 42 mA maxCONTACT RATINGS20 A Resistive, 277 Vac 20 A Ballast NO, 120/277 Vac10 A Ballast NC, 120/277 Vac10 A Tungsten NO, 120 Vac 2 A Tungsten NC, 120 Vac1 HP, 120 Vac2 HP, 277 Vac770VA Pilot Duty, 120Vac1110VA Pilot Duty, 277Vac

ESR2401SB-NC^ (1) COIL INPUT RATINGS 24 Vdc @ 32 mA max30 Vdc @ 42 mA max24 Vac @ 75 mA max120 Vac @ 42 mA maxCONTACT RATINGS20 A Resistive, 277 Vac 10 A Ballast NC, 120/277 Vac2 A Tungsten NC, 120 Vac1 HP, 120 Vac2 HP, 277 Vac770VA Pilot Duty, 120Vac1110VA Pilot Duty, 277Vac

Wht/Blk 120 Vac

Wht/Blu 24 Vac/dc

Wht/YelComm

Org

Org

CLOSED AUTO

ESRU1S-NC* (1) COIL INPUT RATINGS 10-30Vdc @ 18 mA max or10-30 Vac, 50-60Hz @ 50mA max120 Vac, 50-60Hz @ 25mA

CONTACT RATINGS 10 A Res., 277 Vac240 W N/C Tungsten, 120 Vac1/6 HP N/C, 120/240 Vac1/8 HP N/C, 277 Vac480 VA Ballast, 277 Vac480 VA Pilot Duty, 277 Vac

Wht/Blk 120 Vac

Wht/Blu 10-30 Vac/dc

Wht/YelComm

CLOSED AUTO

Org

Org

ESRH1C* COIL INPUT RATINGS 10-30Vdc @ 18 mA max or10-30 Vac, 50-60Hz @ 50mA max208-277 Vac, 50-60Hz @ 35mACONTACT RATINGS 10A Res. @ 277 Vac or 28 Vdc480 VA @ 240/277 Vac Pilot480 VA @ 277 Vac Ballast600 W Tungsten @ 120 Vac N/O240 W Tungsten @ 120 Vac N/CTV-5 @ 120 Vac N/OTV-2 @ 120 Vac N/C1/3 HP @ 120/240 Vac N/O1/4 HP @ 277 Vac N/O1/6 HP @ 120/240 Vac N/C1/8 HP @ 277 Vac N/C

Wht/Brn208-277 Vac

ESRM2402B^

Comm

24 Vac/dc

208-277 Vac

Comm

N/C

N/O

COIL INPUT RATINGS 24 Vdc @ 32 mA max30 Vdc @ 42 mA max24 Vac @ 75 mA max208-277 Vac @ 62 mA maxCONTACT RATINGS20 A Resistive, 277 Vac 20 A Ballast NO, 120/277 Vac10 A Ballast NC, 120/277 Vac10 A Tungsten NO, 120 Vac 2 A Tungsten NC, 120 Vac1 HP, 120 Vac2 HP, 277 Vac770VA Pilot Duty, 120Vac1110VA Pilot Duty, 277Vac

ESR2402B^ COIL INPUT RATINGS 24 Vdc @ 32 mA max30 Vdc @ 42 mA max24 Vac @ 75 mA max208-277 Vac @ 62 mA maxCONTACT RATINGS20 A Resistive, 277 Vac 20 A Ballast NO, 120/277 Vac10 A Ballast NC, 120/277 Vac10 A Tungsten NO, 120 Vac 2 A Tungsten NC, 120 Vac1 HP, 120 Vac2 HP, 277 Vac770VA Pilot Duty, 120Vac1110VA Pilot Duty, 277Vac

ESRM2402SB^ COIL INPUT RATINGS 24 Vdc @ 32 mA max30 Vdc @ 42 mA max24 Vac @ 75 mA max208-277 Vac @ 62 mA max

CONTACT RATINGS20 A Resistive, 277 Vac 20 A Ballast NO, 120/277 Vac10 A Ballast NC, 120/277 Vac10 A Tungsten NO, 120 Vac 2 A Tungsten NC, 120 Vac1 HP, 120 Vac2 HP, 277 Vac770VA Pilot Duty, 120Vac1110VA Pilot Duty, 277Vac

ESR2402SB-NC^ (1) COIL INPUT RATINGS 24 Vdc @ 32 mA max30 Vdc @ 42 mA max24 Vac @ 75 mA max208-277 Vac @ 62 mA max

CONTACT RATINGS20 A Resistive, 277 Vac 10 A Ballast NC, 120/277 Vac2 A Tungsten NC, 120 Vac1 HP, 120 Vac2 HP, 277 Vac770VA Pilot Duty, 120Vac1110VA Pilot Duty, 277Vac

ESRH1S-NC* (1) COIL INPUT RATINGS 10-30Vdc @ 18 mA max or10-30 Vac, 50-60Hz @ 50mA max208-277 Vac, 50-60Hz @ 35mA

CONTACT RATINGS 10 A Res., 277 Vac240 W N/C Tungsten, 120 Vac1/6 HP N/C, 120/240 Vac1/8 HP N/C, 277 Vac480 VA Ballast, 277 Vac480 VA Pilot Duty, 277 Vac

ESRMU1C*

Comm

10-30 Vac/dc

120 Vac

N/C

Comm

N/O

COIL RATINGS10-30Vdc @ 18mA max or10-30Vac, 60Hz @ 50mA max120Vac, 60Hz @ 25mA CONTACT RATINGS15A Res., 28 Vdc or 150 Vac10A Res., 120/240/277 Vac 480 VA Pilot Duty, 240/277 Vac 480 VA Ballast, 277 Vac 600 W Tungsten NO, 120 Vac 240 W Tungsten NC, 120 Vac 1/3 HP Motor NO, 120/240 Vac 1/4 HP Motor NO, 277 Vac 1/6 HP Motor NC, 120/240 Vac 1/8 HP Motor NC, 277 Vac

ESRMNU1C* COIL RATINGS10-30Vdc @ 18mA max or10-30Vac, 60Hz @ 50mA max120Vac, 60Hz @ 25mA

CONTACT RATINGS15A Res., 28 Vdc or 150 Vac10A Res., 120/240/277 Vac 480 VA Pilot Duty, 240/277 Vac 480 VA Ballast, 277 Vac 600 W Tungsten NO, 120 Vac 240 W Tungsten NC, 120 Vac 1/3 HP Motor NO, 120/240 Vac 1/4 HP Motor NO, 277 Vac 1/6 HP Motor NC, 120/240 Vac 1/8 HP Motor NC, 277 Vac

ESRU1C*

Wht/Blk 120 Vac

Wht/Blu10-30 Vac/dc

Blu N/C

YelComm

OrgN/O

COIL INPUT RATINGS 10-30Vdc @ 18 mA max or10-30 Vac, 50-60Hz @ 50mA max120 Vac, 50-60Hz @ 25mACONTACT RATINGS 10A Res. @ 277 Vac or 28 Vdc480 VA @ 240/277 Vac Pilot480 VA @ 277 Vac Ballast600 W Tungsten @ 120 Vac N/O240 W Tungsten @ 120 Vac N/CTV-5 @ 120 Vac N/OTV-2 @ 120 Vac N/C1/3 HP @ 120/240 Vac N/O1/4 HP @ 277 Vac N/O1/6 HP @ 120/240 Vac N/C1/8 HP @ 277 Vac N/C

Wht/YelComm

Wht/Brn 208-277 Vac

Wht/Blu 10-30 Vac/dc

Wht/YelComm

CLOSED AUTO

Org

Org

Wht/Blu10-30 Vac/dc

Blu N/C

YelComm

OrgN/O

Wht/YelComm

Wht/Brn208-277 Vac

Blu N/C

YelComm

OrgN/O

Wht/Blu 24 Vac/dc

Wht/YelComm

Wht/Brn208-277 Vac

Wht/Blu 24 Vac/dc

Wht/YelComm

CLOSED AUTO

Org

Org

Comm

10-30 Vac/dc

120 Vac

N/C

Comm

N/O

Comm

24 Vac/dc

Not Used

CLOSED

AUTO

Selectable Jumper Wire

208-277 Vac

ESR2401D*

ESR2402D*

COIL INPUT RATINGS22 mA @ 24 Vdc29 mA @ 24 Vac, 50-60Hz28 mA @ 120 Vac, 50-60Hz

CONTACT RATINGS10A General Use, 277 Vac10A Resistive, 30Vdc1/2 HP @ 120/240Vac, N.O.1/3 HP @ 120/240Vac, N.C. B300 Pilot Duty

Blu N/C

Yel Comm

Org N/O

Gry N/C

Prp Comm

Brn N/O

Wht/Blu24 Vac/dc

Wht/Blk 120 Vac

Wht/YelComm

Blu N/C

Yel Comm

Org N/O

Gry N/C

Prp Comm

Brn N/O

Wht/Blu24 Vac/dc

Wht/Brn 208-277 Vac

Wht/YelComm

COIL INPUT RATINGS22 mA @ 24 Vdc29 mA @ 24 Vac, 50-60Hz32 mA @ 208-277 Vac, 50-60Hz

CONTACT RATINGS10A General Use, 277 Vac10A Resistive, 30Vdc1/2 HP @ 120/240Vac, N/O1/3 HP @ 120/240Vac, N/C B300 Pilot Duty

ESR01P^

ESR02P^

Blu N/C

Yel Comm

Org N/O

Gry N/C

Prp Comm

Brn N/O

Wht/Blk 120 Vac

Wht/Blk 120 Vac

Blu N/C

Yel Comm

Org N/O

Gry N/C

Prp Comm

Brn N/O

Wht/Brn 208-277 Vac

Wht/Brn 208-277 Vac

ESR24P^

Blu N/C

Yel Comm

Org N/O

Gry N/C

Prp Comm

Brn N/O

Wht/Yel 24 Vac/dc

Wht/Yel24 Vac/dc

COIL INPUT RATINGS208-277 Vac, 95 mACONTACT RATINGS20 Amp Resistive @ 300 Vac20 Amp Resistive @ 28 Vdc20 Amp Ballast @ 277-480 Vac15 Amp Resistive @ 600 Vac770 VA Pilot Duty @ 120 Vac1158 VA Pilot Duty @ 240 Vac1110 VA Pilot Duty @ 277 Vac1640 VA Pilot Duty @ 480 Vac3 HP @ 480-600 Vac2 HP @ 240-277 Vac1 HP @ 120 Vac

COIL INPUT RATINGS120 Vac, 95 mA

CONTACT RATINGS20 Amp Resistive @ 300 Vac20 Amp Resistive @ 28 Vdc20 Amp Ballast @ 277-480 Vac15 Amp Resistive @ 600 Vac770 VA Pilot Duty @ 120 Vac1158 VA Pilot Duty @ 240 Vac1110 VA Pilot Duty @ 277 Vac1640 VA Pilot Duty @ 480 Vac3 HP @ 480-600 Vac2 HP @ 240-277 Vac1 HP @ 120 Vac

COIL INPUT RATINGS24 Vac @ 125 mA max or20-30 Vdc @ 70 mA max CONTACT RATINGS20A Res. @ 28 Vdc20A Res. @ 300 Vac15A Res. @ 600 Vac20A Ballast @ 277/480 Vac1 HP @ 120 Vac2 HP @ 240/277 Vac3 HP @ 480/600 Vac770VA Pilot 120 Vac1158VA Pilot @ 240 Vac1109VA Pilot @ 277 Vac1640VA Pilot @ 480 Vac600 Vac Heavy Pilot Duty

*FOR SUPPLY CONNECTIONS USE #14AWG WIRES OR LARGER RATED FOR AT LEAST 75°C(167°F).^FOR SUPPLY CONNECTIONS USE #12AWG WIRES OR LARGER RATED FOR AT LEAST 75°C(167°F).

(1) Standard model has N/C contact configuration, if -NC present. N/O contact configuration, if -NC not present.Refer to Label on -MNC & N/O models for wiring.

ESRTE01P^ CONTROL INPUT RATINGS.4 mA @ 5Vdc.9 mA @ 10Vdc1 mA @ 12Vdc2 mA @ 24Vdc3 mA @ 24 Vac(NON POLARIZED)CONTACT RATINGS20 Amp Res @ 28 Vdc20 Amp Res @ 300 Vac15 Amp Res @ 600 Vac1 HP @ 120 Vac2 HP @ 240/277 Vac3 HP @ 480/600 Vac20 Amp ballast @ 277/480 VacA600 Pilot Duty

ESRTE02P^ CONTROL INPUT RATINGS.4 mA @ 5Vdc.9 mA @ 10Vdc1 mA @ 12Vdc2 mA @ 24Vdc3 mA @ 24 Vac(NON POLARIZED)CONTACT RATINGS20 Amp Res @ 28 Vdc20 Amp Res @ 300 Vac15 Amp Res @ 600 Vac1 HP @ 120 Vac2 HP @ 240/277 Vac3 HP @ 480/600 Vac20 Amp ballast @ 277/480 VacA600 Pilot Duty

Blu N/C

Yel Comm

Org N/O

Gry N/C

Prp Comm

Brn N/O

Wht/Blk

Wht/Blk

Comm

5-25Vac/dcCONTROL

INPUT

120VacPOWER INPUT

Blu N/C

Yel Comm

Org N/O

Gry N/C

Prp Comm

Brn N/O

Wht/Brn

Wht/Brn

Comm

5-25Vac/dc

CONTROLINPUT

208-277VacPOWER INPUT

ESRU2C* CONTACT RATINGS 10A Res. @ 277 Vac or 28 Vdc480 VA @ 240/277 Vac Pilot480 VA @ 277 Vac Ballast600 W Tungsten @ 120 Vac N/O240 W Tungsten @ 120 Vac N/C1/3 HP @ 120/240 Vac N/O1/4 HP @ 277 Vac N/O1/6 HP @ 120/240 Vac N/C1/8 HP @ 277 Vac N/C

COIL INPUT RATINGS 20 mA @ 10-30 Vdc55 mA @ 10-30 Vac, 60 Hz28 mA @ 120 Vac, 60 Hz

Wht/Blk 120 Vac

Wht/Blu 10-30 Vac/dc

Wht/Yel Comm

Wht/Red 120 Vac

Gry/Wht 10-30 Vac/dc

Wht/Purp Comm

Blu N/C

Yel Comm

Org N/O

Gry N/C

Purp Comm

Brn N/O

ESRH2C* CONTACT RATINGS 10A Res. @ 277 Vac or 28 Vdc480 VA @ 240/277 Vac Pilot480 VA @ 277 Vac Ballast600 W Tungsten @ 120 Vac N/O240 W Tungsten @ 120 Vac N/C1/3 HP @ 120/240 Vac N/O1/4 HP @ 277 Vac N/O1/6 HP @ 120/240 Vac N/C1/8 HP @ 277 Vac N/C

COIL INPUT RATINGS 20 mA @ 10-30 Vdc55 mA @ 10-30 Vac, 60 Hz39 mA @ 208-277 Vac, 60 Hz

Wht/Brn 208-277 Vac

Wht/Blu 10-30 Vac/dc

Wht/Yel Comm

Wht/Org 208-277 Vac

Gry/Wht 10-30 Vac/dc

Wht/Purp Comm

Blu N/C

Yel Comm

Org N/O

Gry N/C

Purp Comm

Brn N/O

ESRM2401D* COIL INPUT RATINGS36 mA @ 30Vdc40 mA @ 30Vac31 mA @ 120Vac

CONTACT RATINGS10A General Use, 277 Vac10A Resistive, 30Vdc1/2 HP @ 120/240Vac, N.O.1/3 HP @ 120/240Vac, N.C. B300 Pilot Duty

N/O

Comm

N/C24 Vac/dc

120 Vac

Comm

N/O

Comm

N/C