Mersen A70Q500-4 - High Speed Fuse Amp-Trap® A70Q 700VAC 650VDC 500A Bolted Blade
Mersen

A70Q500-4

Alternate Item Number: A70Q500-4

UPC: 782001141073


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Overview

The Mersen A70Q500-4 Amp-Trap® high-speed fuse, SKU A70Q500-4, is engineered for critical inverter applications demanding exceptionally low I²t for superior protection. This fuse offers the most responsive protection for circuits not designed to sustain heavy overloads, making it an ideal replacement component. With a robust 700VAC and 650VDC rating, it accommodates a diverse range of AC and DC circuits. Key features include its extremely fast-acting nature and current-limiting capabilities, providing the lowest I²t among fuses in its voltage class for optimal device safeguarding. The solid fill technology enhances reliability and performance. This fuse is UL recognized (File E60314) and tested to UL standard 198L parameters for DC applications. Its bolted blade mounting type ensures secure installation. The A70Q series is specifically developed for applications requiring the best AC or DC protection within this voltage range, particularly for inverters and similar equipment where rapid fault interruption is paramount. Mersen's commitment to quality ensures dependable operation, but it's crucial to consult Mersen with specific technical requirements for optimal application. For ampere ratings and styles not listed, contact Mersen Technical Services.
  • Lowest I²t of any fuse in this voltage rating for best overall protection
  • 700V AC, 650V DC rating allows protection of greater variety of circuits
  • Extremely fast acting and current limiting
  • Solid fill technology for extra reliability in performance
  • UL Recognized Component (UL File E60314)

Specifications

AC Voltage Rating
700 V
Amperage Rating
500 A
Application
Protection of inverters and other equipment requiring the best AC or DC protection in this voltage range
Brand Name
Mersen
Case
GMG
Case Material
GMG
Connection
Blade
DC Voltage Rating
650 V
Mounting
Bolted
Mounting
Bolt
Size
7.09 x 2.5;180.086 x 63.5 in;mm
Size
7.09 x 2.5 in
Size
180.086 x 63.5 mm
Special Features
Lowest I2t of any fuse in this voltage rating for best overall protection 700V AC, 650V DC rating allows protection of greater variety of circuits Solid fill technology for extra reliability in performance
Standard
UL recognized component UL File E60314 AC: guide no. JFHR2 DC: tested to UL standard 198L parameters (35-600A)
Sub Brand
Amp-Trap®
Type
Round Body High-Speed Fuse-Links AC Protection
Voltage Rating
700 V
Voltage Rating
700 V V
Package Dimensions (L x W x H)
7.09 in x 2.5 in x 2.5 in
Package Dimensions (L x W x H)
180.086 mm x 63.5 mm x 63.5 mm
Package Weight (Imperial)
1.250 lb
Package Weight (Metric)
0.567 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.

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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.
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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.