Battery Cable Disconnect Switch; 12/24V DC At 100 Amps; One turn of the knob disconnects the battery and saves the solid state voltage regulator and alternator when charging. Also deters possible car thieves when parked, • One turn of the knob disconnects the battery and saves the solid state voltage regulator and alternator when charging • Also deters possible car thieves when parked • Switch is rated at 100 amps for 12 or 24 DC use