Mersen M079499 - Square Body High-Speed Fuse Protistor® Size 2x602 aR 4200VDC IEC 400A With Striker L Brackets
Mersen

M079499

Alternate Item Number: D2602SF42C400QF


Documents & Media
Specification Sheet

Contact for Pricing

Overview

The Mersen Protistor® M079499 is a high-speed fuse designed for robust protection in demanding DC applications, particularly within railway power and auxiliary circuits. Engineered by Mersen, this fuse-link (SKU: M079499) offers superior performance characteristics crucial for modern DC equipment. It features a substantial voltage rating of 4200 VDC and a high current rating of 400 A, ensuring reliable operation under significant electrical loads. The Size 2x602 designation indicates its physical dimensions and compatibility with specific fuse holders. Equipped with L Brackets for secure mounting, this fuse facilitates straightforward integration into existing systems. Mersen DC semiconductor fuse-links are specifically developed to meet the enhanced performance requirements of contemporary DC equipment. These fuse-links are designed to operate effectively at elevated temperatures compared to other fuse types, while simultaneously providing a lower I²t value. This lower I²t is critical for minimizing damage to protected components during short-circuit events. Furthermore, the M079499 exhibits reduced watts loss, contributing to system efficiency, and offers an extended operational life. Its aR classification signifies its suitability for semiconductor protection. Choose the Mersen Protistor® M079499 for dependable and efficient DC circuit protection.
  • High-Speed Fuse Protection: Protistor® series for rapid fault interruption.
  • High Voltage Rating: 4200 VDC suitable for demanding DC power systems.
  • High Current Capacity: 400 A rating for significant electrical loads.
  • Compact Size: Size 2x602 for efficient space utilization.
  • Secure Mounting: L Brackets ensure stable and reliable installation.

Specifications

Amperage Rating
400 A
Brand Name
Mersen
Case
Ceramic
Connection
L Brackets
Current Rating
400 A
DC Voltage Rating
4200 V
Mounting
Bolted
Mounting Type
L Brackets
Series
Protistor®
Size
Size 2x602
Size
16.38 x 3.03 x 6.93 in
Size
416 x 77 x 176 mm
Sub Brand
Protistor®
Type
Square Body High-Speed Fuse-Links DC Protection
Type Of Indicators
Striker
Voltage Rating
4200 V
Wattage
480 W
Package Dimensions (L x W x H)
16.38 in x 3.03 in x 6.93 in
Package Dimensions (L x W x H)
416 mm x 77 mm x 176 mm
Package Weight (Imperial)
15.807 lb
Package Weight (Metric)
7.170 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 Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in
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.

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.