121275R4 Fuse by S & C Electric S&C ELECTRIC SM-4 FUSE REFILL UNIT 7.2 NOMINAL KV 175E AMPS TCC. NO. 153-4 CAT# 121040R4 New Surplus Inventory Code: A Make an Offer Send to a Friend Type: SM-4 Current Rating: 175E Voltage: 7.2KVAC WHSE Code: F4A3 Return To Electrical Fuses