Monster Fuses > Fuses > 122250R4 122250R4 - S&C 15.5kV SM4 Part Number: 122250R4 Description: S&C 15.5kV SM4 Mfg Voltage: 14.4 Rating: 150 E Manufacturer: S&C Speed: STD Type: SM4 Photo is a representation of product. Voltage, amperage, and other details may vary. Request a Quote Resistance Test Results: Manufacturer's Fuse mΩ Values Low:0.31 High:0.491 Average:0.365