Mersen 2 Pole Midget Ultra-Safe Fuse Holder



Mersen Electrical Power

Mersen UltraSafe Modular Fuseholders introduce a new level of safety for Class CC (USCC) and Midget 1-1/2” x 13/32” (USM) AC and DC-rated fuses up to 30 amperes. UltraSafe holders qualify as “Finger-safe” under IEC and DIN standards to an IP20 grade of protection, including fuse changing (with the flick of a finger). UltraSafe holders are available in 1, 2, 3 or 4 poles, with or without visual blown-fuse indicators in each pole. Multi-pole units can also be field assembled by ordering pin-tie handles.


UltraSafe holders save up to 15% mounting space and any combination can be snapped onto 35mm DIN-rail for extra savings in panel building time. UltraSafe holders with Class CC fuses chosen for Type “2” No Damage protection give one of the safest protection packages in the industry. UltraSafe body material is tough and durable polyamide, with exceptional insulating properties.


  • IP20 Finger-Safe (touch safe)
  • DIN-rail mounting
  • Compact Footprint
  • Quick, Tool-free, Easy Fuse Change Outs


  • All circuits up to 600 volts for motors, control circuits, transformers, etc.
  • Photovoltaic and traction applications up to 1000 VDC
  • Non-load disconnect
  • Recommended Fuse Usage – ATQ, ATM, A6Y-2B, A25Z-2, TRM, OTM, A13X-2, GFN, GGU, A60Q-2, A15QS
  • Recommended for DC applications – ATM DCT

USM Ratings:

  • 800 VAC / 1000 VDC, 30 A (non-indicating versions)
  • Short Circuit Current Rating: 100kA
  • Special indicators available for 24VDC, 120VAC, and 1000VDC

Additional Specifications:

  • Terminal screws: Phillips / slot head
  • Suggested screw torque: 14.75 in-lbs.
  • Connector type: Pressure plate
  • Wire range: #6 to #14 (solid/stranded Cu)
  • Load-break disconnect: No


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