S: 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 rust protection and extending durability. These switches are designed to withstand harsh environments, including marine conditions, ensuring reliable performance and extended service life.HIGH SAFETY DESIGN: This battery disconnect switch is engineered for safety. When your vehicle or boat is not in use, it safely cuts off power from the battery, preventing parasitic drain and preserving battery life without compromising system integrity.WIDE APPLICATION: These compact and durable waterproof battery isolator switches are suitable for various vehicles, including cars, buses, RVs, SUVs, motorcycles, trucks, pickup trucks, and yachts. They function effectively as main battery disconnect switches across multiple applications.ELECTRICAL SPECIFICATIONS: The switch supports a maximum intermittent current of 150 A and a continuous current of 100 A at up to 32 VDC. Cranking capacity: 500 A for 5 seconds. Contact resistance: 50 m. Insulation resistance: minimum 100 M at 500 VDC. Terminal bolt diameter: 6 mm.EASY TO OPERATE: The switch features clear on/off position markings for simple identification. "On" indicates power is connected; "Off" indicates power is disconnected. The locking cap can be pulled out and rotated to prevent accidental activation, providing added security. Simply rotate the knob to achieve the desired switching state.