Mersen G302088 - Square Body High-Speed Fuse Protistor® Size 72 gR 600VDC IEC 650VDC UL 200A With Striker Flush ends metric threads
Mersen

G302088

Alternate Item Number: D72GB60V200TF

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Overview

The Mersen G302088 Protistor® fuse-link (SKU: G302088) is engineered for superior semiconductor protection in power conversion equipment. This square body fuse-link, size 72 gR, is specifically designed to safeguard sensitive semiconductor devices such as diodes, thyristors, GTOs, and IGBTs in high-performance power electronics. The fuse operates at a rated voltage of 600VDC and 650VAC (IEC), ensuring compatibility with a wide range of industrial applications. With a current rating of 200A, it delivers reliable protection under high-load conditions. The fuse features a high breaking capacity of 150 kA, allowing it to safely interrupt extreme fault currents without damage. Constructed with pure silver, die-cut elements embedded in solidified sand, the fuse controls arcing characteristics to minimize energy let-through. This results in a low pre-arcing I²t value of 4.2 kA²s and a clearing I²t value of 25 kA²s, ensuring precise and rapid fault interruption. The square body design incorporates flush ends with metric threads for secure and versatile mounting in various equipment configurations. All contact surfaces are silver-plated to enhance conductivity and reduce resistance, while non-magnetic hardware ensures long-term reliability and performance stability. Additionally, the G302088 can be equipped with a low-voltage trip-indicator, enabling integration with microswitches for real-time system monitoring and enhanced safety. The Protistor® series is optimized for high-speed protection in demanding industrial environments, offering maximum flexibility in equipment design while maintaining compact dimensions. Its robust construction and precise performance make it an ideal choice for applications requiring reliable semiconductor protection in power conversion systems. Key specifications include a rated voltage of 690V AC (IEC), a rated breaking capacity of 150 kA, and a power dissipation of 45W at In. The fuse is packaged in a 3-unit configuration with a weight of 0.74 kg per unit.
  • Mersen Protistor® Square Body High-Speed Fuse
  • 200A Rated Current
  • 600VDC / 650VAC (IEC) Rated Voltage
  • 150 kA Rated Breaking Capacity
  • Low Pre-arcing I²t (4.2 kA²s) and Clearing I²t (25 kA²s)
  • Flush ends with metric threads
  • Designed for semiconductor protection (diodes, thyristors, GTO's, IGBTs)
  • Low I²t for enhanced protection

Specifications

Amperage Rating
200 A
Application
Protection of inverters, motor drives, UPS systems and similar 600V or less equipments.
Brand Name
Mersen
Case
Ceramic
Connection
End Contact with Threaded Holes
Connection Type
Flush ends metric threads
Current Rating
200A
DC Voltage Rating
650 V
Material
Silver
Mounting
Bolted
Mounting Type
Square Body
Series
Protistor®
Size
2.91 x 2.32 x 2.48 in
Size
74 x 59 x 63 mm
Size
Size 72
Special Features
Multiple body sizes and terminals or blades combination gR Class according to IEC 60269-4 and VDE 636-23 Low I²t for improved semiconductor protection Extremely fast acting Eliminate all overloads Excellent cycling capability
Standard
IEC 60269-4 Compliance UL/CSA Recognized E76491 CCC GB 1359.4
Sub Brand
Protistor®
Type
Square Body High-Speed Fuse-Links DC Protection
Type Of Indicators
Striker
Voltage Rating
650 V
Voltage Rating
600VDC
Wattage
45 W
Package Dimensions (L x W x H)
2.91 in x 2.32 in x 2.48 in
Package Dimensions (L x W x H)
74 mm x 59 mm x 63 mm
Package Weight (Imperial)
1.618 lb
Package Weight (Metric)
0.734 kg
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9F61 Size B Clips 1.6in

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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.

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.