Medium Duty Battery Selector Switch – 250A ContinuousFeatures:For use with 6 to 32 Volt Marine Electrical SystemsCapacity – 250 AMPS Continuous, 360 AMPS IntermittentWhen used with Non-Unitized Alternators, these models will interrupt the field current (reducing the possibility of damage) if turned “OFF” with the engine runningSpecs:Diameter: 5-1/4″Depth: 2-5/8″