HIGH QUALITY MATERIALS: Our battery disconnect switches are constructed with brass and copper components featuring a tinned core and insulated ABS plastic housing. The tinning process enhances oxidation and discoloration resistance of the copper while maintaining optimal conductivity, improving long-term corrosion protection. Designed to withstand harsh marine environments, this switch ensures reliable performance and extended service life. HIGH SAFETY: This battery disconnect switch is engineered for safety. When a vehicle or boat is not in use, it safely cuts off power supply from the battery, preventing parasitic drain and preserving battery life without compromising system integrity. WIDE APPLICATION: These waterproof battery isolator switches feature a compact and durable design, making them ideal for use in cars, buses, RVs, SUVs, motorcycles, trucks, pickup trucks, yachts, and other vehicles. They can be installed as a main battery disconnect switch in various applications. BATTERY SWITCH SPECIFICATIONS: Rated for a maximum intermittent current of 150 A and continuous current of 100 A at up to 32 VDC. Cranking capacity: 500 A for 5 seconds. Contact resistance: 50 mΩ. Insulation resistance: minimum 100 MΩ at 500 VDC. Mounting bolt diameter: 6 mm. EASY TO USE: The switch includes clear markings for ON and OFF positions. ON indicates circuit closed (power on), OFF indicates circuit open (power off). The locking cap can be pulled out and removed to prevent accidental activation. Simply rotate the knob as needed to achieve the desired switching state.