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Approvals & Standards

  • IEC 60269-2 and IEC 60947-3
  • UL4248-1 Compliant
  • RoHS Compliant
  • Plastic material: NF 16101 & 16102
Requirement 2 Compliant
  • CCC (screw terminal connection

Key features & benefits

The innovative and comprehensive Modulostar® range of Mersen
Modular fuse-holders are finger-safe as per 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 or 3 poles, with or without
visual blown fuse indicators, in IEC + UL version.
Multi-pole units can also be field assembled by ordering pin-ties
assembly kit. The range offers the possibility to use microswitches
(supplied with the holders or ordered separatly) to allow remote
indication. Modulostar® range is made of tough and durable
thermoplastic or thermoset material.

More specifications


  • All circuits up to 800V using semiconductor fuses for protection of small inverters, UPS systems, motor drives, etc.
  • Non-load operation

Product Specifications

Item Number


Catalogue No.


Item Description (ERP)

US 273I  

Short Description

modular fuse holder, UL, 3P, 27x60, DIN rail mounting, indicator, IP20  



Rated voltage AC UL

800   V

Rated voltage DC UL

800   V

Rated voltage AC IEC

800   V

Rated voltage DC IEC

800   V

Ampere Rating

140   A

ROHS Compliant


Fuse Size


Design Details

triple pole  

Indication System


Indication System Type

Visual Indicator  

Number of Poles


Torque Rating

30.98   lb-in

Rated Impulse Withstand Voltage


Rated Insulation Voltage

800   V

Conventional Free Air thermal Current With Fuse-Links Ith

140   A

Max Power dissipation of Fuse Links Pn

11   W

Installation Mounting

DIN rail acc. EN 60715  


Wiring tool : PZ3 or flat 8x1.2mm screw drivers recommended  

Product Weight

0.668   lb

Product Width

4.72   in

Product Length

3.68   in

Product Height

5.88   in

Sell Pack Quantity

1   EACH

Sell Pack Weight

0.668   lb

Sell Pack Width

6.1   in

Sell Pack Length

6.5   in

Sell Pack Height

3.94   in