Large blade fuse 40A 

Most cars make use of these fuses to protect the electronics inside the car from short circuits that may occur, or from over current. These 40A blade fuses will help to fix lots of your electrical problems when you are working on your car. Although these fuses are mostly used in cars, this not the only application for these blade fuses. Lots of new electrical circuits make use of these fuses rather than glass fuses because they are easier to replace.