Eaton JKS-500 Fuse - Class J current-limiting, 200 kAIC at 600 Vac
Part Number: JKS-500
Quick Summary
Eaton JKS-500 fuse provides fast-acting overcurrent protection for motor and power distribution circuits in industrial environments. Plant downtime often stems from nuisance fuse failures or slow fault clearing, which this device helps prevent by swift interruption. RoHS compliant and Class J by design, with a 500 A rating, 600 V operation, and 200 kAIC interrupt capability, it supports reliable protection in demanding service. For engineers and procurement teams, the JKS-500 delivers predictable performance in control panels and switchgear, with easy installation and proven compatibility across Eaton Bussmann protection products. Together with the standard 8 inch length and bolted blade ends, it streamlines retrofits and stocking, reducing total cost of ownership.
Product Information
Extended Description
JKS-500 Eaton: Eaton Bussmann Series Class J fuse, JKS, fast-acting, current limiting fuse, 500 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series JKS fuse
Catalog Number
JKS-500
UPC
051712635004
Product Length/Depth
8 in
Product Height
2.5 in
Product Width
2.5 in
Product Weight
3.25 lb
Warranty
Not Applicable
Compliances
RoHS Compliant
Amperage Rating
500 A
Interrupt rating
200 kAIC at 600 Vac
Voltage rating
600 V
Number of elements
1
Packaging type
Standard
Class
Class J
Connection
Bolted blade end x bolted blade end
Fuse indicator
Non-indicating
Quantity
1
Special features
Non-indicating
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series JKS fast-acting Class J fuses, 70-600A technical data sheet no. 1027
Feature: Class J fast-acting, current-limiting design provides rapid fault clearance, reducing arc energy and wear on upstream devices. Business impact: translates to shorter downtime and lower replacement costs in production lines. Application: ideal for motor circuits, drives, and power-distribution feeders in manufacturing and process facilities. Feature: 500 A amperage rating and 600 V rating with a 200 kAIC interrupt capability. Business impact: enables reliable protection for high-current loads while maintaining system uptime and limiting arc energy. Applications include large motors, drives, welding stations, and other high-power branches in control panels, switchgear, and distribution feeders. Feature: Rejection-style, bolted blade ends support secure installation and correct replacement. Business impact: reduces mis-insertion risk, simplifies service, and minimizes downtime during maintenance. Applications: retrofits in existing Class J fuse blocks and new installations in industrial cabinets. Feature: RoHS compliant construction and an 8 inch length with a 2.5x2.5 inch footprint. Business impact: supports environmental compliance and provides a compact, easy-to-fit solution for modern control enclosures. Applications: control panels, machine bays, and distributed I/O assemblies. Feature: Comprehensive support from Eaton Bussmann catalogs and datasheets ensures long-term availability and design confidence. Business impact: streamlines sourcing, reduces design risk, and improves procurement stability for OEMs and end-users.
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FAQs
Mount the JKS-500 using bolted blade end connections in approved fuse holders or panels designed for Class J fuses. With an 8 in length and 2.5 x 2.5 in footprint, it fits standard switchgear and control cabinets. Ensure proper clearance, ventilation, and secure mounting to minimize vibration and contact wear. Use compatible Eaton Bussmann fixtures for reliable service.
With a 200 kAIC interrupt rating at 600 Vac, the JKS-500 can clear large fault currents quickly, reducing arc energy, insulating stress, and downstream damage. This supports safe coordination with upstream protection and minimizes downtime during fault events in heavy-duty motor circuits and distribution feeders.
Yes. The JKS-500 uses bolted blade end terminations and a standard 8 inch length alongside a 2.5x2.5 inch footprint. It aligns with common Bussmann/Eaton fuse blocks, switchgear, and control panels designed for Class J devices, simplifying retrofits and new installations.
RoHS compliance is noted for the JKS-500, supporting environmental and regulatory requirements in many regions. It is a Class J fast-acting, current-limiting device rated at 600 V and 500 A with a 200 kAIC interrupt rating. Follow standard electrical safety practices and replace only with equivalent, approved fuses.
By delivering rapid fault clearing, the JKS-500 minimizes unplanned downtime, reduces arc damage, and lowers repair costs. Its RoHS materials and straightforward replacement process simplify maintenance, while the standardized footprint and availability help reduce spare-part inventories and procurement lead times.