NewMar ERC1235 Emergency Relay Charger 12V 35 Amp Automatic Battery Backup

The NewMar ERC-12-35 Emergency Relay/Charger provides automatic battery backup for critical 12V DC communications and electronic equipment. This intelligent device ensures uninterrupted operation by instantly switching to standby battery power when AC power is lost or the primary power supply fails, while simultaneously maintaining battery charge during normal operation.

Key Features:

• Fast-acting S.P.D.T. relay automatically switches to battery backup when DC voltage is lost
• Built-in trickle charger maintains standby battery at full voltage (float voltage maintained at 0.7V below supply voltage)
• 35 amp intermittent / 30 amp continuous relay rating for reliable power switching
• Automatic reconnection to primary power supply when service is restored
• Isolated inputs and outputs allow flexible mounting options
• Compact design: 5-1/8" × 2-7/8" × 3-5/8"

Technical Specifications:

• Input voltage range: 10.0-14.5 VDC
• Relay rating: 30 amps continuous, 35 amps intermittent
• Float trickle charge: 0.1 amps (typical)
• Weight: 1.15 lbs

Installation Notes:

• Mount as close to battery as possible in well-ventilated area away from battery gases
• Can be mounted in any orientation without affecting operation
• Use proper wire gauge: #8 AWG for 5 ft runs, #6 AWG for 10 ft, #4 AWG for 15-20 ft total wire length
• Includes crimp ring lug connectors for secure wiring connections

Ideal for marine communications equipment, RV electronics, emergency radios, and any 12V DC application requiring uninterrupted power. Note that extended power outages may require a supplemental charger to fully restore battery charge.