Bussmann SL-20PK4 20 Amp Time Delay Loaded Link Rejection Base Plug Fuse, 125V UL Listed, 4-Pack Quantity: 4 Pack 20A Type SL Plug Fuse Non Tamp, Dimensions: 2.31"L x 2.31"W x 1.31"H, Boxed Size Rejecting Plug Fuse No-interchangeability prevents installing a higher amp fuse than the circuit was designed for Has ability to withstand typical motor starting surges Use in residential or light-duty motor circuits This fuse threads into SA adaptors