This product is a circuit breaker with 3 terminal positions .It is used for 3 inches Ford Pickup Trucks, 5 inches Dodge Trucks, Ford HD Trucks and Navistar IHC Trucks,75 inches Kenworth Trucks, It has a rating of 12V.It features snap off universal blade. It has UCB 15 ampere type 1 ATC circuit breaker. It has precious metal electrical contacts. It fits applications where fuse block spacing is tight. It fits where fuse terminal is recessed.