SPST Two positions: Off-On. For 6-36V DC systems. Will disconnect the battery circuit only. Electrical Ratings UL listed 375M: 250A at 6V, 125A at 12V intermittent; 40A at 6V, 20A at 12V continuous. Electrical ratings on UL labels are conservative. Mounting stem: Brass, 3/4-Inch -16 thread, 23/32-Inch (18.3mm) long. Fits panels up to 3/16-Inch (4.8mm) thick. Terminals: Two 3/8-Inch -24 studs. Case: Plated steel. Contacts: Silver.