Battery switches are designed to be used to interrupt and isolate the battery or bank of batteries in a vehicle from the rest of the vehicle's electrical system. Battery switches are capable of switching much higher currents than ordinary switches. Because of their purpose, battery switches are intended to be used in low voltage 12 volt and 24 volt DC electrical systems, and should never be used for high voltage AC current. Some battery switches feature a removable key, allowing the switch to be left in either the ON or OFF position while being tamper resistant. Our switches range in capacity of 50 amps up to 400 amps of continuous current. Connections to the switches are usually made using either a 5/16" or 3/8" copper cable lug or heavy duty ring terminal. The accompanying video gives an overview of our battery switch selection and how to use them properly.