This Changeover Unit automatically switches between two sources of AC power (Usually shore and inverter). The switching is biased to shorepower, so if both AC sources are live, the inverter would be switched out of circuit (this prevents accidental flattening of batteries due to inverter being loaded up without the users knowledge). Witching breaks contacts before with a changeover time of typically quarter of a second.
Supplied prewired with internal labelled terminals, 3x M25 glands.
Can easily be inserted into existing AC systems where a new inverter has been added.
Shorepower & Inverter Changeover Unit Datasheet