Mersen 422 Fuse Reducer 600V Class H, K 200 - 400
Alternate Item Number: 422
UPC: 782001752293
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Enables use of 200-400A fuses in higher-rated 600V Class H/K fuse clips
- Non-rejection type reducer compatible with Class H, K, and R fuses
- 600V voltage rating for motor circuits, mains, feeders, and branch circuits
- Sold in pairs for balanced installation and optimal protection
- Extends life of existing electrical infrastructure while improving safety
Specifications
AC Voltage Rating | 600 V |
Application | Mersen fuse reducers allow the use of lower rated fuses in existing equipment having clips with higher ampere ratings. The use of closer rated time-delay fuses can improve circuit protection. For example, renewable or one-time fuses feeding a motor can be replaced with fuses sized closer to the motor nameplate current. Non-rejection reducers will allow Class H, K or R fuses to fit Class H or K clips. Rejection-type reducers will allow only Class R fuses to fit Class R clips or only Class J fuses to fit Class J clips. Class J fuse reducers are not for bolt on applications. |
Application | Start-up or newly expanding manufacturing facilities ramping up production and electrical demand Temporary use of reduced rating fuse |
Brand Name | Ferraz Shawmut |
Class | H & K |
Size | 2.13 x x 1.63 in |
Special Features | Allow a reduced rating fuse to be installed in a larger fuse holder of the same fuse class Wide range of ratings and sizes |
Standard | 250V and 600V Class H, K, and R - UL Listed Guide No. IZZR, CSA Certified. 600V Class J - UL Listed Guide No. IZZR, CSA Certified 30-600A |
Standard | UL Listed Guide No. IZZR CSA Certified |
Type | Fuse Reducer |
Type | Fuse Reducers |
Voltage Rating | 600 VAC |
Package Dimensions (L x W x H) | 2.125 IN x 1.62 IN x 0.1875 IN |
Package Dimensions (L x W x H) | 5.3975 cm x 4.1148 cm x 4.7625 mm |
Package Weight (Imperial) | 0.330 L |
Package Weight (Metric) | 0.150 kg |
Frequently Asked Questions
What is the purpose of Mersen Fuse Reducers?
Fuse reducers allow the use of lower rated fuses in equipment with higher ampere rated clips, improving circuit protection.
What is the voltage rating for Mersen Fuse Reducers?
They are rated for 250V and 600V Class H, K, and R fuses, and for 600 Volt Class J fuses.
What is the ampere rating range for these fuse reducers?
The ampere rating range for these fuse reducers is from 30 to 600A.
Are Class J Fuse Reducers suitable for bolt-on applications?
No, Class J Fuse Reducers are not intended for bolt-on applications.
Are these products CSA certified?
Yes, these products are CSA Certified.
What is the intended use duration for Fuse Reducers?
Fuse Reducers are intended for temporary use only.
What fuse classes can be used with non-rejection reducers?
Non-rejection reducers allow Class H, K, or R fuses to fit Class H or K clips.
What fuse classes can be used with rejection-type reducers?
Rejection-type reducers allow only Class R fuses to fit Class R clips, or only Class J fuses to fit Class J clips.
What is the tested interrupting rating for these reducers?
These fuse reducers have been tested to 200,000A.
What is the UL listing guide number for these reducers?
The UL listing guide number for these fuse reducers is IZZR.
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.