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Mersen X331174 - Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 22x58 3-Pole+N Pressure Plate IP20
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Mersen X331174 Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 22x58 3-Pole+N Pressure Plate IP20

Alternate Item Number: US223N

UPC: 782001311346


Documents & Media
Specification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Mersen X331174 UltraSafe™ fuse holder is a 3-pole + neutral modular fuse base designed for 22x58mm cylindrical fuse links. Rated for 800VAC and 1000VDC, this unit provides finger-safe protection to IP20 standards, ensuring operator safety during fuse changes with a simple flick of the finger. The holder features pressure plate terminals for secure connections and mounts easily on standard DIN rails using its integrated latching system. Optional microswitches (sold separately) enable remote blown fuse indication. With a maximum current rating of 125A and SCCR of 100kA, it is ideal for protecting small inverters, UPS systems, motor drives up to 750 volts, and non-load disconnect applications. Compatible with A70QS and URD fuse types, this model (SKU X331174) weighs 0.91 kg and is UL Recognized Component (IZLT2, File E52283) and CSA Certified (Class 6225, File 32169).
  • Finger-safe IP20 protection for safe fuse changes
  • Rated 800VAC/1000VDC, 125A, SCCR 100kA
  • 3-pole + neutral configuration for 22x58mm fuses
  • DIN rail mounting with secure pressure plate terminals
  • Optional microswitches for remote blown fuse indication

Specifications

AC Voltage Rating
800 V
Amperage Rating
125 Amps
Application
All circuits up to 750VAC for protection of motors, transformers, low voltage distribution, control circuits Non-load operation
Brand Name
Mersen
Class
IEC Cylindrical 22x58mm
Connection
Pressure Plate
Connection Type
Pressure Plate
DC Voltage Rating
1000 V
IP Rating
IP20
Material
thermoplastic or thermoset
Material
Polyamide
Maximum Operating Temperature
60 C
Minimum Operating Temperature
-25 C
Mounting
DIN rail acc. EN 60715
Number Of Poles
4
Operating Temperature, Maximum
140 F
Operating Temperature, Minimum
-13 F
Phase
3
Poles
3-Pole+N
Series
UltraSafe™
Size
3.01 x 5.51 x 5.02;76.5 x 140 x 127.5 in;mm
Size
22x58
Special Features
Finger safe Degree of protection: IP20 Optional visual blown fuse indicator & microswitch DIN rail mounting Modular design Lockable Multi-pole assembly kit available Sealable in closed and open position Plastic material UL94V2 mini Flame retardant materials with glow wire flammability index to 960°C
Standard
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
Sub Brand
UltraSafe™
Type
UL/CSA Fuse Holders
Voltage Rating
750 VAC
Voltage Rating
800 VAC 1000 VDC
Package Dimensions (L x W x H)
3.01 in x 5.51 in x 5.02 in
Package Dimensions (L x W x H)
76.5 mm x 140 mm x 127.5 mm
Package Weight (Imperial)
2.006 lb
Package Weight (Metric)
0.910 kg
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Frequently Asked Questions

What is the maximum current rating?

The fuse holder supports a maximum current rating of 125A.

Can this fuse holder be used for DC applications?

Yes, the X331174 is rated for 1000VDC in addition to 800VAC.

What is the short-circuit current rating (SCCR)?

The SCCR for the X331174 is 100kA.

What is the package weight?

The package weight for the X331174 is 0.91 kg.

What fuse types are compatible with X331174?

The X331174 is designed for 22x58mm cylindrical fuse links, including A70QS and URD fuse types.

Is remote fuse monitoring available?

Yes, optional microswitches can be added for remote blown fuse indication.

Can this fuse holder be used as a no-load disconnect?

Yes, the X331174 can function as a no-load disconnect.

Frequently Asked Questions about Mersen

What industries and applications are Mersen products used for?

Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.

What are the main product lines offered by Mersen?

Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.

What are the key features of Mersen products?

Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.

What environmental ratings do Mersen products have?

Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.

What accessories are available for Mersen products?

Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.

How are Mersen products typically installed?

Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.

What certifications and standards do Mersen products comply with?

Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.

What technical support does Mersen offer?

Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.