Isolator Switch - Rated Current: 200A; Instantaneous Current: 1000A; Voltage: 12-60V DC; Stud size: 3x5/16" (8mm). Easy to Use - This battery cut-off switch is easy to install and use. It can stand alone or interlock with other switches to isolate and secure the electrical system. Safe and Save - This marine battery isolator switch can safely disconnect the power to prevent leakage and reduce battery consumption. 145/5000 Durable Material - ABS shell, Ns terminals, not easily oxidized and corroded. The back cover insulates the terminals against any short circuit. Widely Used - Work with automotive electronics, electrical products; car RV marine boat truck off-road vehicles, ect. Product Dimensions (L x W x H): 6.86 x 6.86 x 7.62 cm; 240 grams