FEATURES ★ The on-off disconnect switch is designed for use on a single 12-48 volt battery. It can prevent unknown devices from draining the battery and save you from having to recharge it on a regular basis. ★ The patented Contour Locking System, allowing it to be a stand-alone unit, or locked together with other switches ★ This battery cut off kill switch has four removable side plates provide access of up to 1/0 cables. The rear cover insulating the rear terminals against any short circuits, ensuring that the switch meets ABYC requirements ★ Tin-plated copper studs and nuts; Ignition-protected ★ This contour battery master switch is widely used for Car, Marine, Boat, RV, Camper, Travel Trailer, Truck, ATV, UTV, Battery banks and other 0-48V Devices PRODUCT DETAILS Operation: On/Off Voltage: 12V-48V DC Continuous Current: 300A(12V), 150A(24V), 75A(48V) Max current: 1250Amps DC Stud Size: 2x3/8" (M10 10mm) 4 Position diameter Bolt and Nuts size:M8 8mm