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Mersen Q084010 - Miniature Fuses Size 5x20 250V 4A High Speed FA Clip Mounting
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Mersen Q084010 Miniature Fuses Size 5x20 250V 4A High Speed FA Clip Mounting

Alternate Item Number: MI5FA25V4


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Specification Sheet

Contact for Pricing

Minimum Qty: 50

Multiplier: 50

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Mersen Q084010 is a miniature high-speed fuse designed for precise overcurrent protection in sensitive electronic and industrial control applications. Rated at 250V AC and 4A, this 5x20mm fuse features a fast-acting (FA) characteristic, ensuring rapid response to fault conditions to safeguard downstream components. Its clip mounting configuration enables straightforward installation in electrical enclosures and control panels, reducing downtime during maintenance or replacement. The high breaking capacity of this fuse is critical for interrupting fault currents safely, preventing damage to semiconductor devices, measuring instruments, and other critical equipment. With a compact form factor, the Q084010 is ideal for space-constrained applications where reliable and swift overcurrent protection is essential. This fuse is part of Mersen's Amp-Trap® series, known for current-limiting performance and low I²t values, minimizing stress on protected circuits during fault events.
  • 5x20mm miniature fuse size for compact applications
  • 250V AC rating with 4A current capacity
  • Fast-acting (FA) response for rapid fault interruption
  • Clip mounting for easy installation in control panels
  • Part of Mersen's Amp-Trap® series with current-limiting performance
  • Mounting Type: Clip Mounting

Specifications

Connection Type
clip mounting
Current Rating
4 A
Material
High-quality materials
Mounting Type
Clip Mounting
Series
Amp-Trap
Series
5x20 FA/FB
Size
5x20 mm
Size
5x20
Voltage Rating
250 V
Package Dimensions (L x W x H)
0.79 in x 0.2 in x 0.2 in
Package Dimensions (L x W x H)
20 mm x 5 mm x 5 mm
Package Weight (Imperial)
0.0030 lb
Package Weight (Metric)
0.0010 kg
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Frequently Asked Questions

What is the clearing I²t at AC Rated Voltage for Q084010?

The clearing I²t at AC Rated Voltage for the Q084010 fuse is 10 A²s.

What is the pre-arcing I²t for the Q084010 fuse?

The pre-arcing I²t for the Q084010 fuse is 4.6 A²s.

What is the breaking capacity of the Q084010 fuse?

The breaking capacity for the Q084010 fuse is 10 kA.

What is the breaking capacity of the Q084010 fuse?

The breaking capacity for the Q084010 fuse is 10 kA.

What is the pre-arcing I²t for the Q084010 fuse?

The pre-arcing I²t for the Q084010 fuse is 4.6 A²s.

What is the clearing I²t at AC Rated Voltage for Q084010?

The clearing I²t at AC Rated Voltage for the Q084010 fuse is 10 A²s.

What is the ampere range for the FA/FB fuses?

The ampere range for these fuses is from 0.04A to 20A.

What is the voltage rating for these miniature fuses?

These miniature fuses have a voltage rating of 125V-250V.

What is the ampere range for the FA/FB fuses?

The ampere range for these fuses is from 0.04A to 20A.

What is the voltage rating for these miniature fuses?

These miniature fuses have a voltage rating of 125V-250V.

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.