These ATC blade fuses are 32 Volt, fast-acting fuses. ATC fuses are used to protect a cars electrical system. This includes the vehicle's lights, engine, air conditioner, heat, wipers, and more. They are the standard for most modern automobiles, vans and light trucks. All of our fuses are color coded and have the amp rating stamped on the front to make them easy to identify. The transparent housing also lets you see when the fuse is blown, allowing you to quickly identify which fuse needs to be replaced.