ERC-12-35 Emergency Relay Charger

The ERC-12-35 Emergency Relay Charger ensures that your communication equipment remains operational during power outages. In case of AC power failure, this device automatically switches to backup battery power using a fast-acting relay. Once AC power is restored, the relay reverts to the power supply while maintaining the battery charge for readiness.

This device provides a trickle charge to the battery while the main power supply is active, keeping it at full capacity. The float charge voltage is set 0.7 volts below the power supply voltage. If the system is down for extended periods, an additional charger may be required to fully charge the backup battery.

Installation Instructions:

For optimal performance, install the ERC as close to the battery as possible, ensuring there are no hazards for accidental contact. Mounting options include vertical, horizontal, or upside-down without affecting functionality. Use #10 screws for installation. Ensure it is isolated from any explosive gases, especially if placed near batteries.

Wiring Guidelines:

Keep the wiring as short as possible and use corrosion-free wiring for connections.

• 5 ft. wire length requires #8 AWG wire
• 10 ft. wire length requires #6 AWG wire
• 15 ft. wire length requires #4 AWG wire
• 20 ft. wire length requires #4 AWG wire

Be sure to use the included connectors securely, especially for models ERC-12-15 and ERC-24-15, which come with terminal covers to prevent short circuits.

Specifications:

• Input Range: 10.0-14.5 VDC (12V)
• Relay Rating: 30 amps continuous & 35 amps intermittent
• Float Trickle Current: 0.1 amps
• Dimensions (inch): 5-1/8" x 2-7/8" x 3-5/8"
• Weight: 1.15 lbs

• Automatic switch to backup battery during AC failure
• Trickle charging capability to maintain battery health
• Flexible mounting options: vertical, horizontal, or upside-down
• Fast-acting S.P.D.T. relay for quick power switching
• Compact size for easy installation and integration