Mersen A25X225-4 - 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 225 Amps A25X series.
Mersen

A25X225-4

Alternate Item Number: 782001942953

UPC: 782001942953

Contact for Pricing

Overview

The Mersen A25X225-4 Amp-trap Semiconductor Protection Fuse (SKU: A25X225-4) is a critical component engineered for the robust protection of sensitive power semiconductor devices in demanding industrial environments. Designed by Mersen, a globally recognized leader in electrical protection solutions, this fuse offers unparalleled reliability and performance for safeguarding critical equipment. Its primary function is to provide fast-acting, current-limiting protection against short circuits and dangerous overcurrent conditions that could otherwise lead to catastrophic failure of power semiconductors. This specific model, the A25X225-4, boasts a substantial current rating of 225 Amps and a voltage rating of 250 Volts, making it suitable for a wide array of high-power applications. The A25X series fuses are meticulously designed to meet the stringent requirements of protecting power semiconductors such as diodes, phase control SCRs (Silicon Controlled Rectifiers), and other advanced power electronic components. These devices are fundamental to the operation of modern industrial machinery, power conversion systems, motor drives, and renewable energy infrastructure. Without adequate protection, the failure of a single semiconductor can result in extensive system downtime, costly repairs, and potential safety hazards. Mersen's Amp-trap fuses are renowned for their superior performance characteristics, including a high interrupting rating and a low I²t value, which signifies their ability to absorb and dissipate energy rapidly during a fault. This rapid response is paramount in preventing damage to the protected semiconductor devices, which often have very low overload tolerance. The A25X series is constructed with high-quality materials and advanced manufacturing techniques to ensure consistent and dependable operation throughout its service life. Key benefits of employing the Mersen A25X225-4 fuse include: * **Superior Semiconductor Protection:** Specifically designed to protect diodes, SCRs, and other power semiconductor devices from overcurrents and short circuits. * **High Reliability:** Manufactured by Mersen, a trusted name synonymous with quality and performance in electrical protection. * **Fast-Acting Response:** Provides rapid fault clearing, minimizing damage to sensitive electronic components. * **Robust Construction:** Built to withstand harsh industrial conditions and ensure long-term operational integrity. * **Voltage and Current Ratings:** Suitable for applications requiring up to 250V and 250A protection. Typical applications for the Mersen A25X225-4 fuse span across numerous industrial sectors. This includes motor control centers, variable frequency drives (VFDs), uninterruptible power supplies (UPS), welding equipment, industrial power supplies, and renewable energy inverters. In these systems, the fuse acts as the first line of defense, isolating faulty components and preventing cascading failures that could compromise the entire system. Professionals selecting and installing these fuses prioritize precise coordination with other protective devices and system components to ensure optimal safety and operational efficiency. The UNSPSC code for this product is 39121628, further categorizing its industrial application. Trust Mersen's expertise to deliver the dependable protection your critical power semiconductor devices require.
  • Designed for protection of power semiconductor devices (diodes, SCRs, etc.)
  • Mersen Amp-trap A25X Series for reliable industrial performance
  • 250 Volt AC voltage rating
  • 225 Ampere current rating
  • Fast-acting, current-limiting fault protection

Specifications

Brand Name
Ferraz Shawmut
Current Rating
225 A
Series
A25X
Voltage Rating
250 V
Package Dimensions (L x W x H)
3.84 IN x 1.5 IN x 1.5 IN
Package Dimensions (L x W x H)
9.7536 cm x 3.81 cm x 3.81 cm
Package Weight (Imperial)
0.650 L
Package Weight (Metric)
0.295 kg
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.