Ferraz Shawmut Fuse Reducer is a non-rejection reducer allows the use of 100 Amps fuses to fit 200 Amps clips for better performance. It has fuse current rating of 100 Amps at 250 Volts and clip current rating 200 Amps at 250/600 Volts. It allows Class H, K or R fuses to fit Class H or K clips. Fuse reducers are UL listed/CSA certified. Also known as -MERSEN 212 200-100A 600V Fuse Reducer-Ferraz Shawmut 212 Fuse Reducer 100 Amp 600 Volt AC/DC