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Approvals & Standards


  • UL Recognized to Standard 4248-1, File E52283
  • CSA File No. 032169, Class 6225-01
  • IEC 60269-2-1 and 60947-3 Compliant
  • UL Listed to Standard 4248-19 (PV), File E347822
  • CSA Component File No. 032169, Class 6225-30

Key features & benefits

Mersen USM Series UltraSafe Modular Fuse holders introduce a new level of safety for Midget 1-1/2" x 13/32" 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. Multipole 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 body material is tough and durable polyamide, with exceptional insulating properties.

More specifications


  • All circuits up to 600 volts for motors, control circuits, transformers, etc…
  • DC circuits up to 1000VDC including photovoltaic applications
  • Non-load disconnect

Product Specifications

Item Number



Fuse Holder UltraSafe™ 600VAC 600VDC Midget 30A 1-Pole IP65  

EAN/UPC code


Rated voltage AC UL

600   V

Rated voltage DC UL

600   V


50/60   Hz

Rated current

30   A

ROHS Compliant


AC or DC


Fuse class


Short Circuit Current Rating (SCCR)

100   kA

Number of Poles


Wiring range

#6 to #14 Solid or Stranded  

Body/Insulating Material


Max Fuse Rated Current

30   A

Installation Mounting

DIN Rail  

Product Weight

0.0635   kg

Product Width

17.5   mm

Product Length

78   mm

Product Height

58.9   mm

Sell Pack Quantity

12   EA

Sell Pack Weight

0.7983   kg

Sell Pack Width

88.9   mm

Sell Pack Length

215.9   mm

Sell Pack Height

67.6   mm