Is there such an animal that would trip a circuit breaker when there is a loss of input power? Similarly with the relay system which energized to close the main contact to apply main/grid power to the service panel, but when there is a loss of grid power = loss power to the relay which disengage the main contacts which isolate the grid to the service panel. I am wondering as to is there such a compact plug and play device to do just that. Many thanks in advance and hope to hear your great insights…
Circuit breaker that trips when there is a loss of power
circuit breaker
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Best Answer
A magnetic starter switch or magnetic contactor can do what you want. Most are designed for fairly heavy loads (8A and up), and they are not consumer-style plug-in devices but rather bulky boxes intended for permanently wiring. There are circuit breakers with this feature that you can mount in a panel (hopefully you have a panel type that one of these can fit). The on/off buttons are provided on the breaker itself and/or via a separate switch connected with its own wiring and mounted near the load (usually a machine of some sort).
The Fuji SC-03 is one example of such a circuit breaker: https://www.fujielectric.com/products/mc/mc_ms_tr_sc_neos.html