Return to Home
Ferraz Fast Track

4.8kV Ferrule / Medium Voltage Fuses

R-rated Motor Starter Fuses - Amp-trap R-rated fuses are current-limiting, high interrupting rating fuses intended for the short-circuit protection of medium voltage motors and motor controllers. R-rated fuses are back up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. The motor starter manufacturer generally specifies the R-rated fuse size. Amp-trap R-rated fuses are rated 2R to 36R.

[547 KB]
[Not Available]


  • Ferrule mounting for standard clips and interchangeability with other brands of fuses

Part Numbers

  • Browse Product Data for part numbers & product information


  • AC: 2R to 36R - 5500V, 63kA I.R. Sym.
  • UL Recognized Component A480R @ 5080V, 50kA, Sym.
  • Short circuit protection of medium voltage motors and motor controllers