Used for DC 12 - 48 V systems to isolate and secure the electrical system, can stand alone or be locked together with other switch. Eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.Is Discontinued By Manufacturer:NoProduct Dimensions:2.76 x 3.74 x 2.95 inches; 9.34 ouncesItem model number:Am-CBS01Date First Available:December 18, 2016Manufacturer:AmpperASIN:B07413JWLDHeavy Duty: ABS plastic housing, durable made for safety use, rear cover insulates terminals against any short of circuits, equiped with 4 sets of bolts.Operation: On-Off 2 positions, 275 A continuous at DC 12V, 455 A intermittent at DC 12V, 1250 A momentary at DC 12V.Compatible: used for DC 12 - 48 V systems to isolate and secure the electrical system, can stand alone or be locked together with other switch.Purpose: eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.Copper terminal stud size: 3-8 10 mm x 2, very easy to install, universal used for car, vehicle, Rv and boat, also electrical equipment's switch.