Mersen A25Z150-4 - A25Z 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 150 Amps A25Z series.
Mersen

A25Z150-4

Alternate Item Number: 782001942489

UPC: 782001942489

Contact for Pricing

Overview

The Mersen A25Z150-4 Amp-trap Semiconductor Protection fuse is a critical component engineered for the robust safeguarding of sensitive power semiconductor devices. Designed to protect high-power components such as diodes, phase control SCRs (Silicon Controlled Rectifiers), and other advanced power semiconductor assemblies, this fuse offers unparalleled reliability in demanding industrial environments. With a substantial voltage rating of 250 Volts and a high current carrying capacity of 150 Amps, the A25Z150-4 is specifically built to withstand and interrupt dangerous overcurrent and short-circuit conditions, thereby preventing catastrophic damage to expensive semiconductor equipment and ensuring operational continuity. This particular fuse belongs to Mersen's esteemed A25Z series, a line renowned for its precision engineering and exceptional durability. The A25Z series fuses are characterized by their fast-acting response times and high interrupting ratings, crucial attributes for protecting fast-switching semiconductor devices. Their design prioritizes the rapid isolation of fault currents, minimizing the duration of stress on the protected components and significantly extending their operational lifespan. This proactive protection strategy is vital for maintaining the integrity of power electronic systems across a wide spectrum of industrial applications. Applications for the Mersen A25Z150-4 are diverse and include motor drives, industrial power supplies, uninterruptible power supplies (UPS), welding equipment, and renewable energy systems where precise and reliable semiconductor protection is paramount. The ability to withstand the rigors of continuous operation while offering superior fault protection makes this fuse an indispensable choice for engineers and maintenance professionals seeking to optimize system performance and minimize downtime. The consistent quality and performance associated with the Mersen brand further solidify its position as a trusted solution for critical electrical protection needs. When selecting semiconductor protection fuses, factors such as voltage rating, current rating, interrupting capacity, and response time are paramount. The Mersen A25Z150-4 excels in these areas, offering a balanced combination of protection characteristics tailored for power semiconductors. Its robust construction ensures it can perform reliably even under challenging environmental conditions, common in industrial settings. By investing in Mersen's high-performance fuses, businesses can enhance the safety, reliability, and longevity of their power electronic infrastructure, reducing the risk of costly repairs and production interruptions. Mersen's commitment to innovation and quality in electrical protection solutions makes the A25Z150-4 a superior choice for safeguarding your valuable semiconductor assets.
  • Designed for protection of Power Semiconductors (Diodes, SCRs, etc.)
  • 250 Volt AC rating for versatile industrial applications
  • 150 Amp current rating for high-power semiconductor circuits
  • Mersen A25Z series for precision and durability
  • Ensures reliable overcurrent and short-circuit protection

Specifications

Amperage Rating
150 A
Application
Protection of AC/DC drives, UPS and other equipment of 300 volts or less
Brand Name
Ferraz Shawmut
Current Rating
150 A
Series
A25Z
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)
3.13 IN x 1.22 IN x 1.22 IN
Package Dimensions (L x W x H)
7.9502 cm x 3.0988 cm x 3.0988 cm
Package Weight (Imperial)
0.380 L
Package Weight (Metric)
0.172 kg
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E1062696

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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.