Return to Home
Ferraz Fast Track

7.2kV Bolted / Medium Voltage 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, at 2.4, 4.8, and 7.2kV. 4.8 and 7.2kV fuses are UL Recognized.  The 7.2kV (A072F) series has the same dimensions as the 4.8kV (A480R), allowing smaller 7.2kV equipment or 4.8kV upgrades, and is available as a bolt in version.recognized.

[662 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


  • A072 @ 7200V 50kA, Sym. UL File #E93367
  • Short circuit protection of medium voltage motors and motor controllers