|This humble little device is a near-relative of the "crowbar" over-voltage protection circuits used in the computer industry - now adapted for use in aircraft electrical systems. Completely solid-state, this quarter-sized, sealed module is capable of taking a runaway alternator "off-line" in milliseconds. This same device is used in every 504-1, 504-2, and 505-1 PM/OV Protection Kit sold by B&C. Available for both 14 and 28-volt electrical systems.|
It is set at 16V, anything above 16V is considered over-voltage which trips at that point. This will be used in conjunction with a relay and circuit breaker. It will cause the circuit breaker to open once it hits an over-voltage. This will require a circuit breaker and relay to work, this will not function by itself.
No, once tripped it will stop all current flow to the devices being powered by the circuit. Once power is removed, the circuit will reset.
It is not designed to be used as a stand alone over voltage regulator. It is not to be used with an internally regulated alternator.