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

Manufacturer

NewMar

<h3>About NewMar Power</h3><p>Founded in 1970 and headquartered in Costa Mesa, California, <strong>NewMar Power</strong> has spent more than five decades earning a reputation as one of the most trusted names in DC power technology. From the marine deck to the telecom rack, NewMar designs and manufactures power solutions built to perform when reliability is not optional. Today, NewMar operates as part of Mission Critical Electronics (MCE), a family of specialized power brands serving critical infrastructure, public safety, transportation, and industrial automation markets worldwide.</p><h3>A Complete DC Power Ecosystem</h3><p>What sets NewMar apart is the breadth and depth of its DC power portfolio. The brand offers an extensive lineup that spans <a href="/11280-newmar-battery-chargers-200141">battery chargers</a>, DC power systems, hot swap rectifiers, power conversion equipment, DC UPS solutions, DIN rail power, and DC power distribution — essentially everything needed to design, deploy, and maintain a robust DC power infrastructure. Whether the application is a commercial fishing vessel, a first-responder communications vehicle, a cellular network installation, or an industrial automation system, NewMar has purpose-engineered solutions to match.</p><p>NewMar&apos;s <a href="/11280-newmar-vehicle-battery-2476">vehicle batteries</a> and battery management products reflect the same engineering philosophy: deliver clean, stable power under demanding real-world conditions. Their smart charging algorithms, temperature compensation, and multi-stage charge profiles help extend battery life and protect sensitive electronics — critical considerations in marine and mobile environments where a power failure can mean more than just an inconvenience.</p><h3>Engineering Quality and Industry Certifications</h3><p>As an ISO 9001-certified facility, NewMar maintains a rigorous Quality Management System ensuring that every product consistently meets both customer expectations and applicable regulatory requirements. This commitment to process discipline translates directly into field reliability — a reason why NewMar products are found aboard emergency vehicles, in telecom huts, on offshore vessels, and throughout wireless network infrastructure across North America and beyond.</p><p>With over 50 years of engineering experience and a track record of delivering customized power system designs, NewMar continues to be the go-to partner for integrators and engineers who need dependable DC power — right out of the box and for years into the future.</p><h3>Industries Served</h3><ul style="list-style:disc"><li><strong>Marine</strong> — Shore power chargers, inverter/chargers, and DC distribution for recreational and commercial vessels</li><li><strong>Telecommunications &amp; Wireless Networks</strong> — Rectifiers, DC UPS, and power systems for tower sites and network huts</li><li><strong>Public Safety &amp; Land Mobile</strong> — Mobile DC power stabilizers and battery backup for emergency response vehicles</li><li><strong>Industrial &amp; Automation (IIoT)</strong> — DIN rail power supplies and rugged power conversion for factory and field automation</li></ul>

Part Number

ERC1235
09/12/2036 5:29 AM
Sale Price

$274.83

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Usually delivered within 2 days

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Product Details

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.

Ordering process is relatively easy.

Super easy and super fast. Very satisfied

this is for my 18x7.5 ultra 403 s

Seems like a good selection at a fair price.

Correct parts both times I have ordered, as well as quick shipping

Good product, worked well with my boat live well project and also quick delivery in 2 days! Very satisfied.

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