Perko Medium Duty Battery Disconnect Shut Off/On - 250 Amp Continuous 12-32VDC One Size. Perko built these Battery Charger Accessories with a polycarbonate body with brass terminals that's durable enough for the road and secure enough for the most demanding marine applications. This Perko 9601 Medium Duty 250 Amp Continuous & 360 Amp Intermittent Battery Disconnect Switch is designed for 12V 24V and 32V marine electrical systems. Also these switches are ignition protected so that you can install them in the engine room of your gasoline powered boat. Put the Perko 9601 Medium Duty Battery Disconnect Switch in your boat and take charge of your electrical needs. Specifications for Perko Medium Duty Battery Disconnect Shut Off/On: Manufacturer: Perko Amperage: 250 amps Color: Black Features of Perko Medium Duty Battery Disconnect Shut Off/On Ignition Protected For use with 12 24 and 32 Volt Marine Electrical Systems Capacity - 250 Amps Continuous & 360 Amps Intermittent When used with Non-Unitized Alternators these models will interrupt the field current (reducing the possibility of damage) if turned "OFF" with the engine running Package Contents: Perko Medium Duty Battery Disconnect Shut Off/On Perko 9601DP: Medium Duty Battery Disconnect Shut Off/On - 250 Amp Continuous 12-32VDC One Size