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Approvals & Standards

  • UL Recognized File E93367

Key features & benefits

Mersen 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. These fuses are single, double, triple or quadruple barrels 3 inches diameter with end mounts designed for bolting directly to equipment bus or terminal pads.

More specifications


  • Short circuit protection of medium voltage motors and motor controllers

Product Specifications


2R to 38R  

Betriebsklasse / Charakteristik


UL Dateinummer

File E93367  



REACH konform


Max Betriebstemperatur

80   °C

Max. Lagertemp.

80   °C

Min. Lagertemp.

-25   °C

harmonisiertes System


Frequenz (Hz)

50/60   Hz

References in this serie  (1)

Item number - Catalog No.

Ampere rating

Fuse size

Total Clearing I2t

Indication system

Product weight






10.4326   kg