Abstract: A battery master disconnect switch includes a front panel and a back panel. The front panel has a selector knob for selecting between multiple positions. The back panel has a primary terminal, a secondary terminal, and an auxiliary terminal. The primary terminal is for connection, using a first cable, to a primary battery. The secondary terminal is for connection, using a second cable, to a secondary battery. The auxiliary terminal is for enabling a device. The device receives power for any of the positions of the selector knob. The battery master disconnect switch can present a voltage for the primary, the secondary, or both the primary and secondary batteries.

Abstract: A fused disconnect switch may include a fuse carrier to house a fuse, an actuator configured to reversibly engage and disengage with the fuse carrier; a common trip link, mechanically coupled to move in concert with the actuator, and a contact arm, indirectly mechanically coupled to the common trip link. As such, when the fuse carrier is disposed in an engaged position, the contact arm is free to move into a closed position to make electrical contact with a fixed contact, and when the fuse carrier is in a disengage position, the contact arm is prevented from moving into the closed position.

Abstract: A battery master disconnect switch includes a front panel and a back panel. The front panel has a selector knob for selecting between multiple positions. The back panel has a primary terminal, a secondary terminal, and an auxiliary terminal. The primary terminal is for connection, using a first cable, to a primary battery. The secondary terminal is for connection, using a second cable, to a secondary battery. The auxiliary terminal is for enabling a device. The device receives power for any of the positions of the selector knob. The battery master disconnect switch can present a voltage for the primary, the secondary, or both the primary and secondary batteries.