Mersen W215644 - Cylindrical fuse-link aM Size 14x51 IEC 500VAC 1A With Striker
Mersen

W215644

Alternate Item Number: FR14AM50V1P

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Overview

The Mersen W215644 is a cylindrical fuse-link designed for partial range protection in industrial electrical distribution circuits. Featuring an aM (motor protection) classification, this fuse-link is specifically engineered to safeguard electrical devices from destructive high short-circuit currents. It offers excellent current limitation and low thermal let-through values, ensuring the integrity of protected equipment. This model operates at a rated voltage of 500VAC and has a rated current of 1A. Its physical size is 14x51mm, a common standard for industrial applications. A key feature of this fuse-link is the integrated striker, which can be used to activate an auxiliary contact, providing remote indication of fuse operation. The fuse-link boasts a high rated breaking capacity of 120 kA, ensuring it can safely interrupt fault currents. Constructed with a ceramic body and silver-plated contacts, it guarantees reliable technical performance and durability. Mersen's cylindrical fuse-links, including this aM variant, are manufactured in France (FR) and are built to meet stringent IEC standards. This fuse-link is ideal for protecting motor circuit currents, where precise and rapid interruption of overcurrents is critical. The aM classification means it is designed to cut off currents exceeding 6.3 times the nominal motor current up to its maximum breaking capacity.
  • Mersen Cylindrical Fuse-Link, aM Classification
  • Size: 14x51mm
  • Rated Voltage: 500VAC
  • Rated Current: 1A
  • Features integrated striker for auxiliary contact activation

Specifications

AC Voltage Rating
500 V
Amperage Rating
1 A
Application
aM type for protection of motors, transformers and other loads with in-rush currents.
Body Material
Ceramic
Brand Name
Mersen
Connection
Ferrule
Connection Material
Silver-Plated Copper
Current Rating
1 A
Interrupt Rating
120 kA
Material
Ceramic, Silver
Mounting
Clip
Series
aM
Size
2.01 x 0.56 in
Size
51 x 14.3 mm
Size
14X51
Special Features
Reduced size Striker version available for remote indication of fuse operation Safest and most reliable protection system
Standard
IEC 60269-1 & -2 Approved by Lloyd's Register of Shipping and Bureau Veritas
Type
IEC Cylindrical Fuse-Links
Type Of Indicators
Striker
Voltage Rating
500 VAC
Package Dimensions (L x W x H)
2.01 in x 0.56 in x 0.56 in
Package Dimensions (L x W x H)
51 mm x 14.3 mm x 14.3 mm
Package Weight (Imperial)
0.046 lb
Package Weight (Metric)
0.021 kg
Cylindrical fuse-link aM Size 10x38 IEC 500VAC 1A With Visual Indicator

X219233

Cylindrical fuse-link aM Size 10x38 IEC 500VAC 1A With Visual Indicator

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.