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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)

A331154 - US141I

50  

14x51  

-

1-Pole  

Yes  

0.1433   kg

B331155 - US141M

50  

14x51  

-

1-Pole  

Yes  

0.1525   kg

C331156 - US141MI

50  

14x51  

-

1-Pole  

Yes  

0.1533   kg

D331157 - US141N

50   A

14x51  

-

1-Pole+N  

No

0.2966   kg

G331137 - US142

50  

14x51  

-

2-Pole  

No

0.2833   kg

H331138 - US142I

50  

14x51  

-

2-Pole  

Yes  

0.3   kg

J331139 - US142M

50  

14x51  

-

2-Pole  

Yes  

0.3076   kg

K331140 - US142MI

50  

14x51  

-

2-Pole  

Yes  

0.31   kg

L331141 - US142M2

50  

14x51  

-

2-Pole  

Yes  

0.3076   kg

M331142 - US142M2I

50  

14x51  

-

2-Pole  

Yes  

0.31   kg

N331143 - US143

50  

14x51  

-

3-Pole  

No

0.43   kg

P331144 - US143I

50  

14x51  

-

3-Pole  

Yes  

0.435   kg

Q331145 - US143M

50  

14x51  

-

3-Pole  

Yes  

0.4475   kg

S331147 - US143MI

50  

14x51  

-

3-Pole  

Yes  

0.455   kg

T331148 - US143M2

50  

14x51  

-

3-Pole  

Yes  

0.4525   kg