Newmar ERC-12-35 12V Emergency Relay/Charger, 35 Amp Intermittent

Newmar ERC-12-35 Emergency Relay/Charger provides automatic backup power switching for compatible 12V DC communications equipment when the primary power supply loses voltage or fails. It also directs a small portion of the output current to a standby battery for trickle charging during normal operation.

• Input range: 10.0-14.5 VDC for 12V systems
• Relay rating: 30 amps continuous and 35 amps intermittent
• Typical float trickle current: 0.1 amps
• Dimensions: 5-1/8 in. x 2-7/8 in. x 3-5/8 in.
• Weight: 1.15 lbs.
• Includes crimp ring lug connectors and six rubber terminal boots
• Uses a fast-acting SPDT relay to switch equipment DC input to a standby battery when primary DC voltage is lost
• When primary power is restored, the relay returns the equipment to the power supply and resumes battery maintenance charging
• Mounting may be vertical, horizontal, or upside-down; mounting hardware is not included
• Installation guidance: mount near the battery, avoid accidental terminal contact, and do not install in an enclosure or area containing battery or other potentially explosive gases
• Recommended wire sizes by total run length: 5 ft. uses #8 AWG; 10 ft. uses #6 AWG; 15 ft. uses #4 AWG; 20 ft. uses #4 AWG
• Battery float voltage is maintained at 0.7 volts below the power supply voltage

A supplemental charger may be necessary to fully restore a significantly discharged backup battery after an extended outage.