【Safe Protection】The battery cut-off switch can cut off power to the vehicle or on-board battery for safety. It also saves energy if the battery is not used for a long time. 【Material】Made of tinned red copper core and ABS plastic. Tin plating improves the antioxidant and anti-fade performance of the red copper and extends its rust protection time, without affecting conductivity. 【Widely Compatible】Used for 12 to 48 V systems, 275 A (maintained) / 455 A (intermittent) / 1250 A (momentary). It 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 kill switch for RVs, ATVs, cars, boats, caravans, trucks, etc. 【Easy to Use】The battery isolator has transparent colored labels to mark the On/Off positions. ON = On switch (green), OFF = Off switch (red).