Mersen J236 - Fuse Reducer 600V Class J 30 - 200
Mersen

J236

Alternate Item Number: J236

UPC: 782001753467

Contact for Pricing

Overview

The Mersen J236 Fuse Reducer (SKU J236) is engineered to enhance electrical system protection and flexibility for 600V Class J applications. This essential component allows for the precise installation of lower-ampere rated Class J fuses within existing equipment that features higher ampere-rated fuse clips. This capability is crucial for optimizing circuit protection, particularly for sensitive equipment like motors, where precise current matching is paramount to preventing damage and ensuring operational longevity. The J236 facilitates the use of time-delay fuses that are more closely matched to actual load requirements, enabling fuses to be sized specifically to equipment specifications, such as a motor's nameplate current. This significantly reduces the risk of nuisance tripping while providing superior protection against overloads and short circuits. Engineered for Class J fuses, the J236 fits Class J fuse clips and is not suitable for bolt-on applications. Sold in pairs, its robust construction adheres to Mersen's stringent quality standards for reliable performance in demanding industrial environments. Mersen, a leader in electrical protection, offers decades of expertise in components like the J236.
  • Enables precise installation of lower-rated Class J fuses in higher-rated fuse clips.
  • Optimizes circuit protection, especially for sensitive motor loads.
  • Facilitates use of time-delay fuses matched to specific equipment requirements.
  • Designed for 600V Class J applications.
  • Covers a 30A to 200A current range.

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
J
Size
2.3 x 0.83 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)
2.3 IN x 1.062 IN x 1.062 IN
Package Dimensions (L x W x H)
5.842 cm x 2.6975 cm x 2.6975 cm
Package Weight (Imperial)
0.460 L
Package Weight (Metric)
0.209 kg
Fuse Reducer 600V Class J 100 - 200

J216

Fuse Reducer 600V Class J 100 - 200

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.