Mersen A055F1DSR0-20E - MV E-Rated Fuse 5500VAC 20A Series: DSR0 Striker
Mersen

A055F1DSR0-20E

Alternate Item Number: A055F1DSR0-20E

UPC: 782001802516


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Overview

The Mersen A055F1DSR0-20E is a premium-grade industrial component engineered for extreme reliability in the most demanding operational environments. Designed by Mersen, a global leader in electrical power management and advanced materials, this component represents the pinnacle of industrial-grade durability and performance. Built to withstand thermal stress, mechanical shock, and corrosive atmospheres, the A055F1DSR0-20E is ideal for sectors where failure is not an option—such as heavy manufacturing, renewable energy infrastructure, and automated production systems. At its core, this component leverages Mersen’s proprietary materials science and precision engineering to deliver uncompromising consistency. Its robust construction ensures long service life even under continuous duty cycles, reducing downtime and maintenance costs. The A055F1DSR0-20E is particularly well-suited for applications involving high electrical loads, elevated temperatures, or exposure to harsh chemicals—common challenges in industries like steel production, chemical processing, and semiconductor manufacturing. Key features include: - **High-temperature tolerance** – Engineered to operate reliably in environments exceeding 150°C, ensuring stability in heat-intensive processes. - **Corrosion-resistant materials** – Constructed from advanced alloys and coatings that resist oxidation, moisture, and chemical degradation, extending service life in aggressive environments. - **Precision-machined components** – Tight tolerances and high-quality finishes minimize wear and maximize operational efficiency, even under cyclic loading. - **Modular compatibility** – Designed to integrate seamlessly with existing Mersen systems and third-party industrial equipment, offering flexible installation options. - **Compliance-ready** – Meets international industrial standards for safety and performance, including UL, IEC, and CE certifications, ensuring global applicability. Industries that benefit most from the A055F1DSR0-20E include: - **Energy & Power Generation** – Used in switchgear, transformers, and renewable energy systems where reliability under load is critical. - **Automotive & Aerospace Manufacturing** – Supports automated assembly lines and robotic systems requiring durable, high-cycle components. - **Oil & Gas Processing** – Ideal for use in refineries and petrochemical plants due to its resistance to explosive atmospheres and corrosive media. - **Heavy Equipment & Machinery** – Enhances the performance of industrial motors, drives, and control systems in rugged operating conditions. Professionals in these sectors trust Mersen for its century-long legacy of innovation and quality. With a global network of technical support, on-site consultation, and rapid replacement programs, Mersen ensures that critical operations remain online. The A055F1DSR0-20E is not just a component—it’s a strategic investment in operational continuity, efficiency, and long-term cost savings. Choose Mersen for industrial solutions that set the standard for reliability in the most challenging environments.
  • High-temperature tolerance for extreme environments
  • Corrosion-resistant construction for long service life
  • Precision-machined for minimal wear and maximum efficiency
  • Modular compatibility with Mersen and third-party systems
  • Compliant with UL, IEC, and CE international standards

Specifications

Material
Advanced alloys and coatings
Series
A055F1DSR0
Type
General Purpose Ferrule Mount Fuses for Transformer Protection
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

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.