Mersen A13X300-4 - A13X Amp-trap Form 101 Semiconductor Protection fuses were designed for the specific protection of diodes and other semiconductor devices rated 130VAC. The A13X product line's compact design is perfect for those applications that have limitations on available space. 130 Volts 300 Amps type 4 connection.
Mersen

A13X300-4

Alternate Item Number: 782001941307

UPC: 782001941307

Contact for Pricing

Overview

The **Mersen A13X300-4 Amp-trap Form 101 Semiconductor Protection Fuse** is a high-performance, space-efficient solution designed to safeguard diodes and other critical semiconductor devices in demanding industrial and commercial applications. Engineered for **130VAC systems with a 300A current rating**, this fuse combines Mersen’s industry-leading expertise in electrical protection with a compact Type 4 connection, making it an ideal choice for installations where space is at a premium. Whether deployed in power conversion systems, motor drives, or renewable energy applications, the A13X series delivers unmatched reliability and precision in fault protection. Semiconductor devices—such as diodes, thyristors, and IGBTs—are highly sensitive to overcurrent and short-circuit conditions, which can lead to catastrophic failures if not properly mitigated. The **A13X300-4 fuse** addresses this critical need by providing **fast-acting, high-interrupting capacity protection** tailored specifically for semiconductor circuits. Its **Form 101 design** ensures compatibility with standard semiconductor protection applications, while the **Type 4 connection** simplifies installation in tight enclosures or control panels. Unlike generic fuses, which may lack the precision required for semiconductor protection, Mersen’s Amp-trap fuses are engineered with **low let-through energy (I²t)** to minimize stress on protected components during fault conditions. Industries such as **renewable energy (solar inverters, wind power systems), industrial motor drives, traction systems, and power supplies** rely on Mersen’s semiconductor protection fuses to maintain operational integrity. In solar photovoltaic (PV) installations, for example, the A13X300-4 ensures that string inverters and DC combiner boxes remain protected from reverse currents and transient faults, reducing downtime and maintenance costs. Similarly, in **variable frequency drives (VFDs)** for industrial machinery, these fuses provide critical protection for power semiconductor modules, extending their lifespan and preventing costly failures. Selecting the right semiconductor fuse involves more than just matching voltage and current ratings—it requires understanding the **fuse’s interrupting rating, I²t characteristics, and physical dimensions**. The **A13X300-4** excels in all these areas, offering a **300A continuous current rating** and a **high interrupting capacity** to safely clear faults in high-energy circuits. Its **compact footprint** further enhances its versatility, allowing engineers to optimize panel layouts without compromising on protection. Additionally, Mersen’s **Amp-trap Form 101** series is built to withstand harsh environmental conditions, including vibration and temperature fluctuations, ensuring long-term reliability in rugged applications. Mersen, a global leader in electrical protection and heat management solutions, has earned the trust of professionals across industries by delivering **engineered reliability, superior performance, and unparalleled technical support**. With decades of experience in semiconductor protection, Mersen’s fuses are trusted by OEMs, system integrators, and maintenance teams worldwide. The **A13X300-4** is no exception—it represents the culmination of Mersen’s commitment to innovation, quality, and safety in electrical protection. For applications where **precision, durability, and space efficiency** are non-negotiable, the Mersen A13X300-4 is the definitive choice for semiconductor circuit protection.
  • Designed for semiconductor device protection (diodes, thyristors, IGBTs) in 130VAC systems
  • 300A continuous current rating with high interrupting capacity for fault protection
  • Compact Type 4 connection for space-constrained installations
  • Low let-through energy (I²t) minimizes stress on protected components
  • Trusted by industries: renewable energy, motor drives, traction systems, and power supplies

Specifications

Amperage Rating
300 A
Application
Protection of drives, UPS, Rectifiers and other equipment of 130 volts or less
Brand Name
Ferraz Shawmut
Connection
Blade
Connection Type
Type 4 connection
Current Rating
300 A
Mounting
Bolted
Nema Rating
Type 4
Series
A13X
Standard
UL Recognized Component Guide JFHR8, File E60314 Some Ratings RoHS Compliant
Type
North American Round Style
Voltage Rating
130 VAC
Package Dimensions (L x W x H)
2.66 IN x 1 IN x 1 IN
Package Dimensions (L x W x H)
6.7564 cm x 25.4 mm x 25.4 mm
Package Weight (Imperial)
0.250 L
Package Weight (Metric)
0.113 kg
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Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

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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.