Alternator Protection Devices Voltage rating:APD24 - 24V Dimensions 200mm x 130mm x

Dimensions            200mm x 130mm x 56mm

This gives maximum charge rate to the domestic batteries

Usually one is already almost full (the engine battery) while one is empty (the domestic battery bank)

A conventional relay (such as ones used in cars to switch on your lights or control power distribution on boats etc

Alternator Protection Devices Voltage rating:APD24 - 24V Dimensions 200mm x 130mm xProduct Information PDF Installation Instructions PDF Alternator Protection Unit One of the largest destroyer of alternators in the marine world is when a cable comes loose, a fuse blows or an engine is electrically switched off when the engine is running, all these things cause an alternator to be disconnected from the battery while running, this, in turn, causes a massive spike in the alternator which, in turn, can easily destroy the alternator