【Safe Protection】The battery circuit breaker can cut off the power supply of the vehicle or the on-board battery for safety. If you do not use the battery for a long time, it also saves energy. 【Material】Made of tinned red copper core and ABS plastic. Tin plating improves the antioxidant and discoloration performance of red copper and prolongs the rust protection time, while having no influence on the conductivity. 【Widely Compatible】Is used for 12-48V system, 275A (permanent) / 455A (intermittent) / 1250A (momentary). Can be used alone or interlocked with another switch to minimize battery loss and effectively prevent current leakage. 【Wide Applications】The battery switch serves as a car circuit breaker for RVs, ATVs, cars, boats, caravans, trucks, etc. 【Easy to Use】The battery isolator has clear color labels to mark the On/Off positions. ON = power switch (green), OFF = stop switch (red). Specifications: Material: ABS plastic + nylon plastic + copper Operation: ON / OFF Pin