Battery Disconnect Switch - Lockout - 250 Amp Our battery lockout switch is a 250 AMP/ 24 VOLT switch that is o-ring sealed to be fully weather proof. This switch meets OSHA 29 CRF 1910.147 for positive. Stay safe at the track by quickly and easily shutting down the current from your battery., Our battery disconnect switches positively shut off all the current from the batteries in the event of an electrical short or an accident.