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Approvals & Standards

  • UL Recognized Component, UL4248, guide IZLT2, file E52283
  • CSA Certified C22.2, class 6225, file 32169
  • IEC 60269-2 and IEC 60947-3
  • RoHS Compliant
  • Plastic material: NF 16101 & 16102 Requirement 2 Compliant

Key features & benefits

The innovative and comprehensive UltraSafe™ range of Mersen fuse-holders.
Modular fuse-holders are finger-safe under IEC standards to an IP20 grade of protection, including fuse changing (with the flick of a finger). Modular fuse-holders are available in 1, 2, 3 or 4 poles, with or without visual blown fuse indicator, in UL + IEC version.
Multi-pole units can also be field assembled by ordering pin-ties assembly kit. In this size, the range also offers the possibility to use microswitches (supplied with the holders or ordered separately) to allow remote indication.
UltraSafe™ range is made of tough and durable thermoplastic or thermoset material.

More specifications

Applications

  • All circuits up to 750VAC for protection of motors,
  • transformers, low voltage distribution, control circuits
  • Non-load operation

Product Specifications

Frequency (Hz)

50 ... 60   Hz

Ampere range

0…50 A  

Short Circuit Current Rating (SCCR)

100   kA

Degree of Protection (IP)

IP20  

Flammability rating

94 V-0  

Wire Insulation Rating

60/75 C  

Wire Type

Rigid wire = 1.5-35mm² (16-3AWG) or Stranded wire = 1.5-25mm² (16-4AWG)  

UL Category Code

IZLT2  

CE Conformity

Yes  

REACH Compliant

Yes  

Max Operating Temp.

60   °C

Min Operating Temp.

-25   °C

Max Storage Temp.

80   °C

Min Storage Temp.

-25   °C

Harmonized System

853690  

References in this series  (19)

W331150 - US143M2I

50  

14x51  

-

3-Pole  

Yes  

0.455   kg

X331151 - US143N

50  

14x51  

-

3-Pole+N  

No

0.6   kg

Y331152 - US143NM

50  

14x51  

-

3-Pole+N  

Yes  

0.623   kg

Z331153 - US141

50  

14x51  

-

1-Pole  

No

0.143   kg