On/Off Function:This 12V battery disconnect switch features dual "On/Off" positions with a rated current of 275A (continuous for 1 hour), 455A (intermittent for 5 minutes), and 1250A (cranking for 10 seconds). Equipped with two 3/8" (10mm) studs, it supports various electrical system connections Enhanced Safety Protection:This waterproof battery disconnect switch safely cuts off the battery connection when the vehicle or boat is idle, effectively preventing battery drain and extending battery life, ensuring safe system operation Premium Quality:Made with 2mm thick high-quality copper conductive plates for superior conductivity and long-term reliability. The battery switch housing is constructed from durable ABS plastic, providing strong impact resistance. The rear cover isolates the terminals, preventing short circuits. Tinned copper studs and nuts offer excellent conductivity and corrosion resistance Complete Accessories:The package includes 1 battery disconnect switch, 2 conductive copper plates, 2 cable terminals, and 4 stainless steel mounting screws and caps, allowing flexible installation. A two-year warranty provides added peace of mind Wide Application:Compatible with 12-48V electrical systems for isolating and protecting electrical devices. It can be used individually or combined with other switches. Ideal for cars, boats, RVs, campers, travel trailers, trucks, ATVs, UTVs, battery banks, and other electrical equipment