Mersen G300409 - Square Body High-Speed Fuse Protistor® Size 32 aR 550VAC IEC 600VAC UL 1250A With Striker DIN 80 Blades
Mersen

G300409

Alternate Item Number: PC32UD55V1250A


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Overview

The Mersen Protistor® G300409 is a high-speed aR fuse designed for semiconductor protection in power conversion equipment. This Size 32 fuse-link delivers ultra-fast response with a rated voltage of 550VAC (IEC) / 600VAC (UL) and a breaking capacity of 200kA, making it ideal for protecting diodes, thyristors, and IGBT devices. The square body design with DIN 80 blades ensures compatibility with global mounting standards, while the silver-plated contact surfaces and non-magnetic hardware enhance reliability and performance. With a rated current of 1250A and power dissipation of 150W, this fuse-link is engineered for high-efficiency applications requiring precise thermal and electrical management. The fuse elements are embedded in solidified sand to control arcing and minimize I²t values, ensuring optimal protection and longevity. Additionally, the G300409 can be equipped with a low-voltage trip indicator for remote monitoring via a microswitch, adding operational flexibility. Certified to IEC 600VAC and UL 1250A standards, this Protistor® fuse-link is a trusted solution for demanding industrial environments where semiconductor protection is critical.
  • Ultra-fast aR response for semiconductor protection (diodes, thyristors, IGBTs)
  • Rated 1250A, 550VAC (IEC) / 600VAC (UL), 200kA breaking capacity
  • Square body design with DIN 80 blades for global compatibility
  • Silver-plated contacts and non-magnetic hardware for enhanced reliability
  • Low-voltage trip indicator option for remote monitoring via microswitch
  • Embedded fuse elements in solidified sand for controlled arcing and low I²t
  • Power dissipation: 150W at rated current

Specifications

AC Voltage Rating
600 V
Amperage Rating
1250 A
Application
Protection of inverters, motor drives, UPS systems and similar 690V or less equipments.
Brand Name
Mersen
Case
Ceramic
Connection
DIN Type Blades
Connection Type
DIN 80 Blades
Current Rating
1250A
Material
Silver-plated, non-magnetic hardware
Mounting
Bolted
Mounting Type
DIN 80 Blades
Series
Protistor®
Size
4.33 x 2.32 x 2.56 in
Size
110 x 59 x 65 mm
Size
Size 32
Special Features
Multiple body sizes and terminals or blades combination aR Class according to IEC 60269-4 and VDE 636-23 Very low I²t for improved semiconductor protection Ultra fast acting Current limiting Superior cycling capability
Standard
IEC 60269-4 Compliance UL/CSA Recognized E76491 CCC GB 13539.4 for Asian market only
Sub Brand
Protistor®
Type
Square Body High-Speed Fuse-Links AC Protection
Type Of Indicators
Striker
Voltage Rating
600 V
Voltage Rating
550VAC/600VAC
Wattage
180 W
Package Dimensions (L x W x H)
4.33 in x 2.32 in x 2.56 in
Package Dimensions (L x W x H)
110 mm x 59 mm x 65 mm
Package Weight (Imperial)
1.167 lb
Package Weight (Metric)
0.529 kg
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Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

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.