4 position (1 ON / 2 ON / 1+2 ON / OFF), single pole marine battery isolator / changeover (master) switch rated at 100A continuous use. Features a chunky control knob with a positive switching action.

Used for switching between, or combining, two independent battery banks in charging and discharging applications and for isolation from loads or a charging source. Also useful for preventing parasitic battery drain when left for long periods or as an emergency shut-off in boats and vehicles.

Surface-mounted with slide-out cable entry panels.

Sold individually. Fixings not included.

Note: If this switch is used to isolate a starter battery it should not be switched to the OFF position when the engine is running (except in an emergency situation) because there is a high risk of damage to the diodes in the alternator rectifier unit.