Mersen H330034 - Extremely high breaking capacity fuses:, Protection of power semiconductors as per IEC standard 60269-1 and -4 and EN 60269-1 and -4, 500-690V voltage rating (rating 20 to 400A), gR class (gRB ratings 20 to 125A) according to VDE 636-23, - Clearing all overloads, - Improved safety and protection, - Enabling selective coordination with all fuses, aR class (URB ratings 75 to 400A) according to VDE 636-23 and IEC 60269-4, Two models complying with BS88-4 and EN 60269-4 standards, - Z3 drawing (74 mm between axes) without blown fuse indication - with separate trip-indicator, These fuses are UL Recognized
Mersen

H330034

Alternate Item Number: 3605340360998

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Overview

The Mersen H330034 fuses (SKU: H330034) offer extremely high interrupting ratings for the protection of power semiconductors, adhering to IEC 60269-1, IEC 60269-4, and EN 60269-1/-4 standards. These fuses are designed for a voltage range of 500-690V, with current ratings from 20A to 400A. They are available in gR class (gRB ratings 20A to 125A) and aR class (URB ratings 75A to 400A) according to VDE 636-23. The gR class provides full-range protection, improved safety, and enables selective coordination, clearing all overloads. The aR class offers high-speed protection for semiconductor devices. Two models comply with BS88-4 and EN 60269-4 standards, featuring a Z3 drawing (74 mm between axes) with or without blown fuse indication and with a separate trip-indicator. These fuses are UL Recognized, ensuring compliance with North American safety standards. Applications include motor drives, power converters, and industrial automation equipment where rapid fault clearing and high breaking capacity are critical to prevent damage to sensitive components like thyristors, diodes, and IGBTs. The compact Z3 design facilitates integration into space-constrained panels. Mersen, a trusted name in electrical protection, delivers reliable solutions for critical power semiconductor assets.
  • Extremely high interrupting rating for superior semiconductor protection.
  • Meets IEC 60269-1/-4 and EN 60269-1/-4 standards.
  • Available in 500-690V with current ratings from 20A to 400A.
  • gR class (20-125A) for full-range protection and aR class (75-400A) for high-speed response.
  • UL Recognized for enhanced safety and compliance.

Specifications

Brand Name
Ferraz Shawmut
Current Rating
20-400 A
Series
H330034
Size
74 mm (axial dimension)
Voltage Rating
500-690 V
Package Dimensions (L x W x H)
3.93 IN x 0.79 IN x 1.51 IN
Package Dimensions (L x W x H)
9.9822 cm x 20.066 mm x 3.8354 cm
Package Weight (Imperial)
0.280 L
Package Weight (Metric)
0.127 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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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.