Eaton JM60400-2MW22 Modular Fuse Block - Class J
Part Number: JM60400-2MW22
Quick Summary
The Eaton JM60400-2MW22 modular fuse block provides reliable overcurrent protection for 225–400 A main circuits in industrial equipment and switchgear. Engineers often struggle with space constraints and complex wiring; this unit delivers two-pole protection in a compact footprint to simplify installation and service. UL Listed, CSA Certified, and RoHS compliant CE markings reinforce regulatory compliance and safety in critical environments. Designed for compatibility with Bussmann JM fuses, it provides flexible wiring options and straightforward field maintenance. Its 200 kAIC short-circuit rating at 600 V and rugged Class J construction further support reliable protection in demanding applications.
Product Information
Extended Description
JM60400-2MW22 Eaton: Eaton Bussmann series JM modular fuse block, 225-400 A, Two-pole, Class J, 200 kAIC, 600 V, (2) 350kcmil-1 AWG, (2) 2 AWG - 6 AWG
Product Name
Eaton Bussmann series JM modular fuse block
Catalog Number
JM60400-2MW22
UPC
051712485395
Product Length/Depth
8 in
Product Height
4.92 in
Product Width
6.75 in
Product Weight
5.18 lb
Warranty
Not Applicable
Compliances
RoHS Compliant CE Marked
Certifications
Contact Manufacturer UL Listed CSA Certified
Amperage Rating
225-400A
Short-circuit rating
200 kA
Voltage rating
600 V
Number of Poles
Two-pole
Wire size
(2) 350kcmil-1 AWG (2) 2 AWG - 6 AWG
Class
Class J
eaton-product-overview-for-machinery-catalogue-ca08103003zen-en-us.pdf
eaton-product-overview-for-machinery-catalogue-ca08103003zen-en-us.pdf
eaton-product-overview-for-machinery-catalogue-ca08103003zen-en-us.pdf
Bussmann series Fuseology
Eaton Specification Sheet - JM60400-2MW22
Two-pole Class J modular fuse block design reduces panel depth while delivering reliable protection for high-current feeders. Business impact: saves cabinet space, speeds installation, and lowers wiring complexity across control panels. Application: ideal for motor feeders and main feeds in industrial machinery. High short-circuit rating of 200 kAIC at 600 V enhances fault tolerance and minimizes downtime. Business impact: improves system reliability and reduces spare part costs. Application: suitable for critical power distribution in manufacturing lines. Large feeder compatibility with two sets of wire entries: (2) 350 kcmil-1 AWG and (2) 2 AWG-6 AWG. Business impact: flexible sourcing, fewer part numbers, easier procurement. Application: feeders and distribution blocks in switchgear and MCCs. Compliance and certification coverage including RoHS, CE, UL Listed and CSA Certified. Business impact: supports regulatory audits and purchase approvals. Application: safe procurement for automation projects across multiple industries. Compact dimensions and weight support installation planning: 8 in length, 6.75 in width, 4.92 in height, and 5.18 lb. Business impact: simplifies space budgeting and shipping logistics. Application: panel design and retrofit projects in industrial automation.
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FAQs
To install the JM60400-2MW22, mount the unit in a suitable enclosure or panel, then connect the two main conductors to the terminal blocks per the wiring diagram. Ensure compatible conductors are used: (2) 350 kcmil-1 AWG and (2) 2 AWG-6 AWG. Tighten hardware to manufacturer torque specs and verify clearances for safe operation. This configuration supports straightforward field maintenance and fast replacement of fuse elements when needed.
The device is rated for 225–400 A main current, 600 V, with a short-circuit withstand rating of 200 kAIC. As a two-pole Class J modular fuse block, it provides robust protection for high-current feeders while enabling compact, modular protection schemes in switchgear and motor control centers.
Yes. The JM60400-2MW22 carries RoHS compliance and CE marking, and is UL Listed and CSA Certified. This combination supports regulatory compliance across regions, simplifies supplier audits, and allows for safer procurement in industries with strict electrical and environmental standards.
This fuse block is ideal for motor feeders, main power feeds, and protection blocks in MCCs, industrial machines, and control panels. Its high 200 kAIC rating at 600 V and two-pole design support reliable protection in demanding environments while its flexible wire-size acceptance simplifies integration with existing busbars and feeders.
Consider planning for compact enclosure fit, ensuring proper venting and cooling, and maintaining consistent torque on terminations to prevent hotspots. The unit’s compatibility with large and small feeders reduces part variety and stocking costs, while its high fault tolerance minimizes downtime during fault events, delivering favorable total cost of ownership in automation projects.