A remote battery disconnect switch is a switch that is installed in an electrical system that runs on a battery. It is operated with an electric or electronic remote control. In the event of a short circuit, the device comes into action and the electrical/electronic control unit detects a drop in voltage and opens the contacts and disconnects the battery. This protects the various electric and electronic devices fitted into the vehicle. The battery disconnect switch should be able to withstand an intermittent current that is a least equal to the full discharge of the battery bank for about 10 seconds. This should prevent the contacts from welding shut and destroying the ability of the switch to operate. Continuous current ratings range from 150 amps to 350 amps. Intermittent current ratings range from 600 amps up to 2,500 amps. Voltage ratings range from 12 volts DC to 24 volts DC. Contacts are offered in copper, silver-plated copper, tin-plated copper and tin-plated brass. Terminals are offered in M10 and M12 sizes. Terminal materials include brass, silver-plated brass, tin-plated brass, nickel-plated brass and silver-plated copper. IP56, IP65, IP66, IP67, IP69K, and IPX7 Ingress Protection Approvals are available.

Littelfuse and Blue Sea offer remote battery disconnect switches.