Prevent Battery Drain: 12-48v battery switch is provide a convenient to disconnect the batteries from the electrical system, which refrains battery from draining during storage and isolate power in case of emergencies; Avert accidental discharge, electrical fires, helping you get the most out of your battery Specification: RED WOLF 1-2-Both-Off boat battery cut off switch 12V-48V features On/Off 4 Position; Rating: 200A DC Continuous, 300A DC Intermittent, 1000A DC Cranking; Stud Size: 3 x 5/16" (8mm); Power busbar is able to reach 250A (MAX) when input/output voltage between 12V-48V DC, NOTE: MAX Continuous Current will DECREASE with Temperature & Humidity Effection 1-2-Both-Off Functionality: Control over which batteries are connected to auto boat's electrical system; Whether you need to isolate a single battery for maintenance or balance the load between multiple batteries for optimal performance, this switch offers unparalleled flexibility Solid & Durable Quality: Power Disconnect w/ABS plastic housing rear cover insulates terminals against any short of circuits; 3 x 5/16"- M8 tinned copper studs and nuts, which is safer and more reliable in electrical conductivity; Flame retardant rating 94VL Widely Application: Battery isolate switch is usually used with the battery box, fuse block which can isolate and protect the electrical system; widely applied to marine, boat, yacht, car, RV, camper, travel trailer, truck, ATV, UTV, etc Easy installation: Straightforward and easy to operate; RED WOLF battery switch is designed for surface, front panel, or rear panel installation, and you can choose any one according to your needs; Clockwise to turn on , counter clockwise to turn off Specification Voltage Rating: 12-48 VDC Continuous Rating: 275 amps DC Intermittent Rating: 455 amps DC Starting Rating: 1250 amps DC Flame retardant rating: 94VL Packing: 1 Set