Mersen T211571 - The innovative and comprehensive Modulostar® 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 IEC version or IEC + UL version. Multi-pole units can also be field assembled by ordering pin-ties assembly kit. In size 14 or 22, the range also offers the possibility to use microswitches (supplied with the holders or ordered separately) to allow remote indication. Modulostar® range is made of tough and durable thermoplastic or thermoset material. 690 50 clamp 14x51 1 pole with neutral.
Mersen

T211571

Alternate Item Number: 8430399013381

Contact for Pricing

Overview

The Mersen Modulostar® T211571 is a single-pole fuse-holder designed for reliable circuit protection in industrial applications. This unit is rated for 690V and 50A, utilizing 14x51mm fuse links. It features a modular design for flexible installation, including DIN rail mounting or direct board mounting options. The Modulostar® range adheres to IEC standards, providing finger-safe operation with an IP20 protection grade, ensuring safety even during fuse changes. Constructed from durable thermoplastic or thermoset material, this fuse-holder offers longevity in demanding environments. The T211571 includes a neutral pole, enhancing its utility in various electrical configurations. Multi-pole units can be assembled in the field using optional pin-ties kits. The range also supports the integration of microswitches for remote blown fuse indication, adding an extra layer of operational visibility. Recommended for use with 27x60mm ferrule fuses, this fuse-holder is a robust component for electrical safety systems. Its dimensions are optimized for modularity, with specific measurements detailed in the manufacturer's catalog for precise integration into control panels and electrical enclosures. The materials used, such as UL94V2 rated plastic, contribute to its flame retardant properties with a glow wire flammability index up to 960°C.
  • Modular design for flexible installation on DIN rail or direct mounting
  • Finger-safe operation to IP20 protection grade as per IEC standards
  • Rated for 690V and 50A, compatible with 14x51mm fuse links
  • Durable thermoplastic or thermoset construction for longevity
  • Includes neutral pole for enhanced electrical configurations

Specifications

Amperage Rating
50 A
Application
All circuits up to 500VAC for protection of motors, transformers, low voltage distribution, control circuits Non-load operation Special applications where small room is available: - street lighting connection boxes - street christmas light connecting boxes - swimming pool connecting boxes
Brand Name
Ferraz Shawmut
Mounting
Installation On To DIN Rails To EN 60715
Standard
IEC 60269-2 IEC 60269-3 and 60947-3 for single pole models RoHS Compliant
Type
IEC LV Compact fuse-holders for cylindrical fuse links
Voltage Rating
690 VAC
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Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

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9F61 Size B Clips 1.6in

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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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.