1. Plug Fuses:
Photo: Timothy Thiele
Plug fuses come in a screw-type configuration. They come with a sight glass that shows if the fuse is blown or not. The older type fuses have a brass screw thread on the side and a center contact point. The newer style, Edison-based, have a plastic thread with a spring-type contact and a center contact. The Edison-type base has an advantage over the older style. It only allows the appropriate sized fuse to be installed, unlike the old style that you could actually install a 30-amp fuse in a 15-amp socket.
2. Plug Fuse Articles:
Photo: Timothy Thiele
When a plug fuse blows and you need to find out if in fact it is bad, testing plug fuses with a multi-meter is the way to go.
What are Screw-in Plug Fuses, Tamper-proof Fuses, and Fuse Adapters?
Learn what plug fuses, tamper-proof fuses, and fuse adapters are and what they look like.
3. Cartridge Fuses:
Cartridge fuses are cylindrical in shape and have the contact points at either end. These fuses are used in fuse panels and disconnects for amperages over 30 amps.
Learn what a cartridge fuse is and what applications they are suitable for.
Learn how to test cartridge fuses to find out if they are blown.
