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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

Item Number

Y331152  

Catalog number

US143NM  

Description

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 3-Pole+N Microswitch Pressure Plate IP20  

EAN/UPC code

0782001311063  

Rated voltage AC UL

800   V

Rated voltage DC UL

1000   V

Frequency

50 ... 60   Hz

Rated voltage AC IEC

750   V

Rated voltage DC IEC

750   V

Rated current

50  

ROHS Compliant

Yes  

Short Circuit Current Rating (SCCR)

100   kA

Fuse size

14x51  

Design Details

US14 triple pole + neutral conductor, 3 microswitches  

Indication System

Yes  

Indication System Type

Microswitch  

Number of Poles

3-Pole+N  

Wiring range

#2 - #14  

Contact materials

Tin-Plated Copper  

Connection/Terminal Type

Clip  

Fuse Installation Method

Clip-in  

Body/Insulating Material

Polyamide  

Torque Rating

3.5   N m

Max Fuse Rated Current

50   A

Rated Impulse Withstand Voltage Uimp

8  

Rated Insulation Voltage

690   V

Conventional Free Air thermal Current With Fuse-Links Ith

50   A

Installation Mounting

DIN rail acc. EN 60715  

Product Weight

0.623   kg

Product Width

53.1   mm

Product Length

76.5   mm

Product Height

110.7   mm

Sell Pack Quantity

1   EACH

Sell Pack Weight

0.9228   kg

Sell Pack Width

119.9   mm

Sell Pack Length

183.9   mm

Sell Pack Height

85.1   mm