【 Function 】 Suitable for systems with 12-48V, 200A DC 12V continuous, 455A DC 12V intermittent, and 1250A DC 12V instantaneous. 2 screws (diameter 10mm) for power cord with M10 ring (10mm). Please measure the dimensions carefully before purchasing to avoid assembly failure. 【Safe Protection】The battery cut off switch can cut off the power supply of the vehicle or the battery on board for safety purpose. If you do not use the battery for a long time, this can also save power. 【Material】Made of tin-plated solid red copper core and ABS plastic. Tin plating improves the antioxidation and decolouration performance of red copper and prolongs the rust prevention time, at the same time has no effect on conductivity. 【Wide Applications】Battery master disconnect switch serves as a main switch for RV, ATV, car, boat, motorhome, caravan, truck, UTV, etc. Please note that this switch is only used to disconnect the power supply. 【Easy to use】The car battery switch has clear colour labels to mark the on / off positions. ON = on switch (green), OFF = off switch (red).