Features 1、High Quality Material: Battery switch is made of high quality ABS and red copper, with maximum conductivity, sturdy and durable. 2、Pratical Design: Make before break contact design allows switching between battery banks without power interruption, practical and convenient. 3、Safe: Marine battery switch with ignition protection and IP66 waterproof, can be safely installed on gasoline powered boats. 4、Function: 300A Battery switches can isolate the potentially destructive energy in the battery banks when boat is not in use or during emergencies. 5、Application: Single circuit on/off battery switch can be used for yachts, RVs, modified cars, etc. Specifications: Item Type: Battery Switch Material: ABS+red copper Continuous Operating Current: 300A Maximum Operating Current: 500A(5min), 900A(30S) Maximum Operating Voltage: 48VDC Terminal Size: M10 Protection Grade: IP66 Inner Stud: Copper plated with silver Features: Make before break contact design allows switching between battery banks without power interruption. Applications: Ideal for Marine or RV applications Package List 1 x Battery Switch