Click to enlargeNewmar ERC-12-35 Emergency Relay
Manufacturer: Newmar PowerPart #: ERC-12-35SKU: 102461
Item #: 102461
Category: Accessories
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Description
ERC-12-35 Emergency Relay The Emergency Relay/Charger is a device for assuring immediate backup power to communications equipment in the event AC power is temporarily lost to the power supply or the supply fails. In addition, it will allow the power supply to act as a “trickle” battery charger without any additional modification.
When the ERC senses a loss of DC voltage, it employs a fast-acting S. P.
D. T.
relay to automatically switch the equipment’s DC input over to a standby battery to allow continued operation. When the power supply is returned to service, the ERC disengages the battery and puts the supply back online to provide DC voltage.
While the power supply is operating normally, a small portion of the output current is directed to the battery to trickle-charge and maintain it at full voltage. (Note: Battery float voltage will be maintained at .
7 volts lower than the power supply voltage. ) Note: If the power supply is down for an extended period, the backup battery may become significantly discharged while powering the radio.
When the supply returns to service, the trickle charge rate of the ERC may be insufficient to restore the battery to full charge promptly. In the event this occurs, a supplemental charger may be necessary to bring the battery to full charge.
Installation Select a suitable location as close to the battery as possible where there is no likelihood of accidental contact and shorting of the terminals. The ERC may be mounted vertically, horizontally, or even upside-down, if necessary, without affecting its operation.
Two # 10 sheet metal or wood screws will be needed. Mounting on a metal surface is acceptable as the inputs and outputs are isolated from the mounting bracket.
Note: If the battery is stored in an unventilated enclosure, users are not recommended to mount the ERC within the same enclosure. As with any relay, it should not be in an area where there may be battery gases or any other potentially explosive gases present.
Wiring The w
Specifications
| Brand | Newmar Power |
|---|---|
| Part Number | ERC-12-35 |
| EverTide SKU | 102461 |
Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.
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Returns & warranty
Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.
Newmar Power productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.
Electrical — frequently asked
- What’s the difference between marine wire and regular wire?
- Marine wire uses tinned (tin-coated) copper strands that resist the corrosion salt air causes, and it’s more finely stranded so it flexes with vibration without breaking. Standard automotive or household wire corrodes and fails much faster in a marine environment.
- How do I size a fuse for a marine circuit?
- Size the fuse to protect the wire, not just the device. Match the fuse rating to the wire gauge’s safe current capacity so the fuse blows before the wire overheats. When adding a new circuit, follow the wire manufacturer’s ampacity chart for the gauge and run length you’re using.
- Do I need a battery switch on my boat?
- A marine battery switch is strongly recommended. It lets you disconnect the battery for storage or service, isolate a failed battery, and — on multi-battery setups — choose which bank powers the boat. It’s a core safety and reliability component.
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