ESRU1C Enclosed Relay

Manufacturer: Functional Devices, Inc.

Address: 101 Commerce Drive Sharpsville, IN 46068

Contact: Toll Free: (800) 888-5538 | Office: (765) 883-5538 | Fax: (765) 883-7505

Email: sales@functionaldevices.com

Website: www.functionaldevices.com

Product Description

The ESRU1C is an enclosed relay featuring a 10 Amp Single Pole Double Throw (SPDT) configuration with a versatile coil voltage input of 10-30 Vac/dc or 120 Vac. It is designed for emergency lighting applications, particularly for shunting around wall switches.

Specifications

• Relays & Contact Type: One (1) SPDT Continuous Duty Coil
• Expected Relay Life: 10 million cycles minimum mechanical
• Operating Temperature: -30 to 140°F (-34 to 60°C)
• Operate Time: 20 ms
• Relay Status: LED On = Activated
• Dimensions: 1.70" x 2.80" x 1.50" with 0.50" NPT Nipple
• Wires: 16 AWG, 600V Rated
• Approvals: UL Listed, UL924, C-UL, CE
• Housing Rating: UL Accepted for Use in Plenum, NEMA 1
• Gold Flash: Yes
• Override (Test Switch): No

Initial Wiring Verification

1. Turn OFF Normal Power, Transfer Power, and Wall Switch.
2. Wire relay according to the wiring diagram.
3. Energize Transfer Power. The Emergency Light should illuminate.
4. Energize Normal Power. The Emergency Light will turn OFF.
5. Turn ON Wall Switch. The Emergency Light should illuminate.

Field Inspection

1. Ensure Normal Power and Transfer Power are energized.
2. Turn OFF Wall Switch. The Light will turn OFF.
3. The Red LED will be illuminated.
4. Turn OFF Normal Power. The Red LED will turn OFF. The Emergency Light will illuminate.

Shunt Relay Application

Functional Devices' Emergency Bypass / Shunt Relays are UL924 listed and suitable for shunting around wall switches. This ensures emergency lighting activates during a loss of normal utility power.

When Normal Power is present, the ESR relay coil is activated, and the emergency panel receives power from the Normal Power source. The lighting load can be controlled by an individual wall switch.

When Normal Power is lost, the ESR coil deactivates, and the Normally Closed (N/C) contact closes. An Automatic Transfer Switch then switches to backup (generator) power, illuminating the lighting load irrespective of the wall switch or controller setting.

Contact Ratings

Coil Specifications

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

Wiring Diagram Descriptions

The diagrams illustrate the connections for the ESR relay in different emergency lighting scenarios.

Diagram 1: Coil Connections

Utility Side:

• Wht/Blk: Utility 120 Vac
• Wht/Blu: Utility 10-30 Vac/dc
• Wht/Yel: Utility Comm

Emergency Side:

• Blu: Emergency Hot N/C
• Yel: Emergency Hot to Load Comm
• Org: N/O (Normally Open)

Diagram 2: System Applications

DIMMING OVERRIDE LOW VOLTAGE: This configuration shows the ESR relay integrated into a system with a dimmer control for the emergency load, connected via a Normal Panel and Emergency Panel, with inputs from Utility Hot/Neutral and Generator/Inverter sources.

BYPASS/SHUNT APPLICATION: This diagram details the ESR relay's use in a bypass/shunt setup. It shows the Normal and Emergency Lighting controlled via a Wall Switch. The ESR relay is connected between the Normal Panel (Utility Hot/Neutral) and the Emergency Panel, with inputs from Utility Hot/Neutral and Generator/Inverter sources. The wiring includes connections for Normal/Emergency Lighting, Wall Switch, and the ESR relay itself (White/Black, White/Yellow).

Compliance:

Made in USA. Meets "Buy American" requirements of ARRA 2009.