Mersen P331167 - Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 22x58 2-Pole 2c.x Microswitch Pressure con. Plate IP20
Mersen

P331167

Alternate Item Number: US222M2

UPC: 782001311292

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Minimum Qty: 3

Multiplier: 3

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Overview

The Mersen P331167 is a two-pole UltraSafe™ modular fuse holder designed for 22x58mm fuse links, offering robust protection and enhanced safety for circuits up to 800VAC and 1000VDC. This unit provides finger-safe operation to an IP20 grade of protection, ensuring user safety even during fuse replacement, which can be performed with a simple flick of the finger. The holder is constructed from tough and durable thermoplastic material, meeting UL94V2 flammability standards and featuring flame retardant materials with a glow wire flammability index to 960°C. It is compatible with Mersen A70QS and URD 22x58mm fuses, and rated for a Short Circuit Current Rating (SCCR) of 200kA. The P331167 includes a mechanical indicator for fuse presence and can also indicate a blown fuse when used with a striker fuse. For advanced monitoring, this model is equipped with a microswitch, enabling remote indication of fuse status. Installation is simplified with DIN-rail mounting capabilities, featuring a unique latching system that allows for easy repositioning. Multi-pole units can be assembled in the field using available pin-tie kits. The UltraSafe™ range adheres to stringent safety standards, meeting UL4248, UL Recognized Component guide IZLT2 (File E52283), CSA Certified C22.2 (class 6225, File 32169), and IEC Compliant (60269-1, 60947-3) requirements. Ideal applications include the protection of small inverters, UPS systems, and motor drives where high-speed fuse protection and IP20 requirements are critical. The holder also features padlocking capabilities for added security and can be sealed in both closed and open positions.
  • Finger-safe operation to IP20 grade of protection per IEC standards
  • Accommodates 22x58mm fuse links (e.g., Mersen A70QS, URD)
  • Rated for 800VAC and 1000VDC with 200kA SCCR
  • Integrated microswitch for remote fuse status indication
  • Durable thermoplastic construction with flame retardant properties

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
DC Voltage Rating
1000 V
Material
Polyamide
Maximum Operating Temperature
60 C
Minimum Operating Temperature
-25 C
Mounting
DIN rail acc. EN 60715
Number Of Poles
2
Operating Temperature, Maximum
140 F
Operating Temperature, Minimum
-13 F
Phase
2
Size
3.01 x 2.76 x 5.02;76.5 x 70 x 127.5 in;mm
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
Package Dimensions (L x W x H)
3.01 in x 2.76 in x 5.02 in
Package Dimensions (L x W x H)
76.5 mm x 70 mm x 127.5 mm
Package Weight (Imperial)
1.021 lb
Package Weight (Metric)
0.463 kg
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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.