Perko Medium Duty Battery Disconnect Shut Off/On - 250 Amp Continuous, 12-32VDCMedium Duty Battery Disconnect Switch Part #: 9601DP Features: 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 Suitable for 12, 24 or 32 volt systems. Capacity 250 amps continuous, 360 amps intermittently.