Compatibility: This Battery Power Switch is designed specifically for DC 12 - 48 V systems, ON/OFF 2 positions, 275 A continuous at DC 12V, 455 A intermittent at DC 12V, 1250 A momentary at DC 12V Easy to use: Battery disconnect switch can directly fit and no modifications, hook up to TOP/Side post battery negative directly, do not need additional battery cables or lugs, isolate and secure the electrical system easily. Material: Battery Isolator Switch is made of pp and copper material, Rest assured that your batteries are well protected against power drain, short circuits, and other potential electrical hazards Design simplicity: Battery Power Switch design is simple and easy to use, even non professionals can easily operate it Multi functional applicability: Eliminate any power draws from the battery when vehicle or boat is not in use, disconnects the battery safely, widely used for car, vehicle, Rv and boat Specification: Material: PP and copper Size Chart: On Off Top Post: 131x54mm/5.16x2.13inchOn Off Side Post With adapter: 125x54mm/4.92x4.92inchOn Off Side Post: 125x54mm/4.92x4.92inch Package Includes: 1pc Battery Power Off Switch Note: Please allow slightly errors due to manual measurement and different monitors.