Mersen A25X5000-128 - A25X Amp-trap Semiconductor Protection fuses are intended for the protection of Power Semiconductors such as Diodes, Phase Control SCR's and other power Semiconductor devices 250 Volts 5000 Amps A25X series.
Mersen

A25X5000-128

Alternate Item Number: 782001942991

UPC: 782001942991

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Overview

The Mersen A25X5000-128 Amp-trap Semiconductor Protection Fuse is a critical component engineered for the robust protection of high-power semiconductor devices. Designed to safeguard sensitive electronics such as diodes, phase control SCRs (Silicon Controlled Rectifiers), and other power semiconductor components, this fuse offers unparalleled reliability in demanding industrial environments. With a substantial voltage rating of 250V and an impressive current rating of 5000A, the A25X series is built to withstand and interrupt severe overcurrent and short-circuit conditions, thereby preventing catastrophic damage to expensive power electronic equipment. This specific model, SKU A25X5000-128, exemplifies Mersen's commitment to providing advanced protection solutions. The A25X series is renowned for its fast-acting characteristics, crucial for semiconductor protection where extremely rapid fault clearing is paramount to minimize energy dissipation within the protected device. Such rapid response is essential to prevent junction damage and ensure the longevity and operational integrity of power converters, inverters, motor drives, and other power electronic systems. Key benefits and features of the Mersen A25X5000-128 include: * **Superior Semiconductor Protection:** Specifically designed to meet the unique protection needs of diodes, SCRs, and other power semiconductor devices, offering a high degree of safety and operational continuity. * **High Voltage and Current Ratings:** A 250V rating combined with a 5000A current capacity makes it suitable for a wide array of high-power industrial applications. * **Fast-Acting Performance:** Engineered for rapid fault interruption, minimizing damage to sensitive semiconductor junctions during overcurrent events. * **Robust Construction:** Built with high-quality materials to ensure durability and consistent performance under challenging industrial conditions. * **Mersen Quality Assurance:** Backed by Mersen's extensive experience and reputation as a global leader in electrical protection and power management solutions. Industries that commonly rely on fuses like the Mersen A25X5000-128 include power generation and distribution, industrial automation, renewable energy (solar and wind inverters), electric vehicle charging infrastructure, and heavy machinery manufacturing. The selection of an appropriate semiconductor protection fuse is a vital step in the design and maintenance of any power electronic system. Professionals consider factors such as the device's I²t rating, its clearing time at various fault currents, and its ability to withstand normal operating conditions without nuisance tripping. Mersen's A25X series is meticulously engineered to meet these stringent requirements, offering peace of mind and ensuring the optimal functioning of critical power systems. Investing in Mersen Amp-trap fuses means investing in the security and efficiency of your industrial operations, safeguarding valuable assets against electrical faults.
  • Mersen A25X Series Amp-trap Semiconductor Protection Fuse
  • Designed for Diodes, Phase Control SCRs, and Power Semiconductor Devices
  • Voltage Rating: 250 V
  • Current Rating: 5000 A
  • Provides fast-acting, reliable overcurrent and short-circuit protection

Specifications

Amperage Rating
5000 A
Application
Protection of AC/DC drives, UPS and other equipment of 300 volts or less
Brand Name
Ferraz Shawmut
Special Features
250VAC rated Low I 2 t minimizes damage to protected component on short circuit. Controlled arc Voltage reduces stress to circuit components during fuse clearing. Choice of mounting types helps in equipment design
Standard
UL Recognized Component Guide JFHR2 Some Ratings RoHS Compliant
Type
North American Round Style
Voltage Rating
250 VAC
Package Dimensions (L x W x H)
2.6 IN x 5.75 IN x 5.75 IN
Package Dimensions (L x W x H)
6.604 cm x 14.605 cm x 14.605 cm
Package Weight (Imperial)
13.300 L
Package Weight (Metric)
6.033 kg
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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.
9F61 Size B Clips 1.6in

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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.