Bussmann Fuses 20A TL Plug Fuse, 4-Pack is designed as a medium duty time delay fuse i for residential motor circuits. for use in kitchens, workshops, garages, utility rooms, or any circuit containing electric motors, relays, or solenoids, these fuses feature brass threads with an Edison base that easily screw into fuse receptacles. The extra-large clear window allows for quick and easy inspection to see if the fuse has blown. Rated at 125V AC with a 10,000 A.I.C. capacity, these UL listed fuses provide reliable protection and durability for your electrical needs. Model Number: TL-20PK4