Mersen L331164 - Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 22x58 2-Pole Visual Indicator Pressure Plate IP20
Mersen

L331164

Alternate Item Number: US222I

UPC: 782001311322

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Overview

The Mersen L331164 is a robust 2-pole UltraSafe™ modular fuse holder designed for 22x58mm fuse links, offering superior safety and operational efficiency. Engineered to meet stringent IEC standards, this fuse holder provides finger-safe protection to an IP20 grade, ensuring user safety even during fuse replacement. The "flick of a finger" operation simplifies fuse changes, enhancing productivity in demanding industrial environments. This model features a visual blown fuse indicator, allowing for quick identification of tripped fuses, which is crucial for minimizing downtime. It is rated for 800VAC with a 50kA SCCR and 1000VDC with a 100kA SCCR, making it suitable for a wide range of applications including motor drives, UPS systems, and low voltage distribution circuits. The pressure plate terminals ensure secure connections, and the unit is designed for DIN-rail mounting with a unique latching system for easy positioning and re-positioning. The UltraSafe™ range is constructed from tough and durable thermoplastic or thermoset materials, ensuring longevity and resistance to harsh conditions. The L331164 is compatible with Mersen A70QS and URD 22x58mm fuses. Optional microswitches can be integrated for remote fuse status indication, further enhancing system monitoring capabilities. This fuse holder also supports padlocking for added security and compliance. Key Specifications: - SKU: L331164 - Manufacturer: Mersen - Fuse Size: 22x58mm - Poles: 2 - Voltage Rating: 800VAC / 1000VDC - Amperage Rating: Up to 125A (for 22x58mm fuses) - SCCR: 50kA (800VAC) / 100kA (1000VDC) - Protection Grade: IP20 (Finger-safe) - Features: Visual blown fuse indicator, pressure plate terminals, DIN-rail mounting, padlocking capability. - Compatible Fuses: Mersen A70QS, URD (22x58mm) - Country of Origin: US Choose the Mersen L331164 for reliable, safe, and efficient fuse protection in your critical industrial applications.
  • Finger-safe operation to IP20 grade under IEC standards
  • Accommodates 22x58mm fuse links (Mersen A70QS, URD)
  • Rated for 800VAC (50kA SCCR) and 1000VDC (100kA SCCR)
  • Integrated visual blown fuse indicator for quick fault detection
  • Modular design with pressure plate terminals and DIN-rail mounting

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
IP Rating
IP20
Material
Polyamide
Material
thermoplastic or thermoset
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
Poles
2
Series
UltraSafe
Size
3.01 x 2.76 x 5.02;76.5 x 70 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 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)
0.716 lb
Package Weight (Metric)
0.325 kg
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CYH10383

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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.