1High Quality Material: Battery switch is made of high quality ABS and metal material, with maximum conductivity, high strength, sturdy and durable. 2Pratical Design: Make before break contact design allows switching between battery banks without power interruption, practical and convenient. 3Excellent Performance: Mini battery switch with ignition protection and IP66 waterproof, can be safely installed on gasoline powered boats. 4Function: 300A Battery switches can isolate the potentially destructive energy in the battery banks when boat is not in use or during emergencies. 5Wide Application: Single circuit battery switch can be used for yachts, RVs, modified cars, marine, boat, etc, have a long service time. Item Type: BatterySwitch Material: ABS plastic shell, red copper plated silver inner core Continuous Current:300A, 500A 5MIN, 900A 30SEC Maximum Voltage:48VDC Waterproof Grade: IP66 ISO:8846, and comply with ABYC requirements Fitment: Fit for yacht, RV 1 xBatterySwitch