Cut Sheet

Functional Devices, Inc. • p: 800.888.5538 • f: 765.883.7505 • www.functionaldevices.com/lighting-controls • [e-mail]
# 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 Coil
10 million cycles minimum mechanical
-30 to 140° F
20 ms
LED On = Activated
1.70˝ x 2.80˝ x 1.50˝ with .50˝ NPT Nipple
16˝, 600V Rated
UL Listed, UL924, C-UL, CE
UL Accepted for Use in Plenum, NEMA 1
Yes
No
Contact Ratings:
10 Amp Resistive @ 120-277 Vac
10 Amp Resistive @ 28 Vdc
480 VA Pilot Duty @ 240-277 Vac
480 VA Ballast @ 277 Vac
Not rated for Electronic Ballast
600 Watt Tungsten @ 120 Vac (N/O)
240 Watt Tungsten @ 120 Vac (N/C)
1/3 HP @ 120-240 Vac (N/O)
1/6 HP @ 120-240 Vac (N/C)
1/4 HP @ 277 Vac (N/O)
1/8 HP @ 277 Vac (N/C)
Coil Current:
33 mA @ 10 Vac
35 mA @ 12 Vac
46 mA @ 24 Vac
55 mA @ 30 Vac
28 mA @ 120 Vac
13 mA @ 10 Vdc
15 mA @ 12 Vdc
18 mA @ 24 Vdc
20 mA @ 30 Vdc
Coil Voltage Input:
10-30 Vac/dc ; 120 Vac ; 50-60 Hz
Drop Out = 2.1 Vac / 2.8 Vdc
Pull In = 9 Vac / 10 Vdc
Wht/Blk
Utility 120 Vac
Wht/Blu
Utility 10-30 Vac/dc
Wht/Yel
Utility Comm
Blu
Emergency Hot
N/C
Yel
Emergency Hot
to Load
Comm
Org
N/O
Initial Wiring Verication
1. Turn OFF Normal Power, Transfer Power, and Wall Switch.
2. Wire relay according to wiring diagram.
3. Energize Transfer Power. Emergency Light should illuminate.
4. Energize Normal Power. Emergency Light will turn OFF.
5. Turn ON Wall Switch. Emergency Light should illuminate.
Field Inspection
1. Ensure Normal Power and Transfer Power are energized.
2. Turn OFF Wall Switch. Light will turn OFF.
3. Red LED will be illuminated.
4. Turn OFF Normal Power. Red LED will turn OFF. Emergency Light will illuminate.
Emergency
Panel
Normal
Panel
Normal
Neutral
Normal
Breaker
Emergency
Neutral
Emergency
Breaker
Automatic
Transfer
Switch
Generator
or Inverter
Neutral
Generator
or Inverter
Hot
Utility
Hot
Utility
Neutral
Wall Switch
Coil
Emergency
Bypass / Shunt
Relay
N/C
Contact
Neutral
to Load
Hot
to Load
Blu
Yel
Wht/Yel
Wht/Blk or
Wht/Blu *
* Select for appropriate coil voltage.
Shunt Relay Application
Our 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 light-
ing load can be switched on/o 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 or
controller scheme.
Made in USA
Meets
“Buy American”
of ARRA 2009
ESRU1C
Enclosed Relay 10 Amp SPDT with 10-30 Vac/dc/120 Vac Coil
UL924 / 10 Amp Emergency Bypass / Shunt Relay
Specications