PERKO Dual Battery Selector Switch mfg#8501DP
For use with systems under 50 Volts. Capacity: 250 Amps Continuous, 360
Amps Intermittent. The OFF position also acts as an emergency
disconnect in the event of an electrical problem.
Dimensions: 5-1/4 diameter, 2-5/8 deep. This model prevents
damage to the Alternator if the switch is accidentally turned off while
the engine is running. They permit selection between batteries for
starting and charging or operation of both batteries in parallel. They
allow addition of an extra battery for use with accessories. Surface
mount, red plastic housing with large black plastic knob. Incorporates
an improved design to protect the copper contacts and brass terminals
used as electrical connections.