Medium Voltage IEEE Fuses

Back-Up R-Rated Bolt-On Fuses for Motor Protection

5 kV Bolt-On Mount Motor

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



  • The Amp-Trap® Bolt-in series are UL Recognized.
  • Bolt-in mounting for direct connection to bus or terminals.
  • Current-limiting for superior equipment protection.
  • Metal embossed catalog number and manufacturing date for lasting identification.
  • Blown-fuse indicator to give positive identification of open fuse.
  • Amp-Trap®: 3" Barrel 2 lb tripped force - 0.50 Inch


  • Voltage Range (VAC) 5.08 kV VAC
  • Ampere Range (A) 2R to 38R A
  • I.R. AC (kA) 50 kA
    65 kA
  • Speed / Characteristic R-Rated
  • Mounting Bolt-on
  • Connection Terminal Type Bolt-on
  • Body Style Ferrule
  • Body Material GMG
  • Materials Contact Silver-Plated Copper
  • Standards UL Recognized to
  • Application Protection for 5.5kV Motors
  • ROHS Compliant Consult Technical Services
  • Lead Free Consult Technical Services
  • CE conformity Consult Technical Services
  • UL File Card E93367 MSSS2.E93367


  • A051B1DAR0-12R - L214876
  • A051B1DAR0-19R - Q215386
  • A051B1DAR0-2R - S215894
  • A051B1DAR0-3R - X216404
  • A051B1DAR0-4R - E216917
  • A051B1DAR0-6R - S217435
  • A051B1DAR0-9R - A217948
  • A051B2DAR0-18R - F218459
  • A051B2DAR0-24R - Y218981
  • A051B2DAR0-32R - Q219503
  • A051B2DAR0-38R - M221961
  • A051B3DAR0-48X - V222704
  • A051B3DAR0-57X - K223224


  • CAD Drawings

    • Drawing A051B1DAR0_2-12_R :   PDF (55 KB)



Where to buy


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