Eaton JKS-40 Fuse - Class J, 200 kAIC at 600V
Part Number: JKS-40
Quick Summary
The Eaton JKS-40 fuse is a fast-acting Class J current-limiting device used to protect electrical circuits in industrial panels. Engineers often battle nuisance tripping, downtime, and complex protection schemes that complicate maintenance. This fuse carries CE marking and RoHS compliance, supporting regulatory alignment, while its 600 V rating and 200 kAIC interrupt capability ensure robust fault clearance in demanding environments. By aligning with the Eaton Bussmann Series, this component simplifies sourcing and coordination, delivering reliable protection for motor drives, control panels, and power distribution equipment without sacrificing performance or uptime.
Product Information
Extended Description
JKS-40 Eaton: Eaton Bussmann Series Class J fuse, JKS, fast-acting, current limiting fuse, 40 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series JKS fuse
Catalog Number
JKS-40
UPC
051712630405
Product Length/Depth
2.38 in
Product Height
1.06 in
Product Width
1.06 in
Product Weight
0.18 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
40 A
Interrupt rating
200 kAIC at 600 Vac
Voltage rating
600 V
Number of elements
1
Packaging type
Standard
Class
Class J
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Quantity
10
Special features
Non-indicating
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Bussmann series JKS Class J data sheet no. 1026
Feature: Fast-acting Class J fuse with 40 A rating and current-limiting protection. Benefit: Rapid fault isolation minimizes arc energy and gear damage, reducing downtime in industrial panels and motor control centers. Application: Protect motor starters and drives in harsh production lines while maintaining selective protection across feeders. Feature: 200 kAIC interrupt rating at 600 Vac. Benefit: Handles high-energy faults without compromising safety, supporting equipment protection in high-power applications. Application: Power distribution panels and MCCs where high fault currents are possible. Feature: Rejection style, ferrule end x ferrule end connections. Benefit: Safe, quick field replacement and reliable connections in standard Bussmann holders. Application: Retrofit and new installations in control panels requiring easy maintenance. Feature: CE Mark and RoHS compliance with 600 V rating. Benefit: Regulatory peace of mind and reduced environmental impact for European operations, plus compatibility with common industrial standards. Application: Global manufacturing facilities and OEM assemblies seeking compliant protection. Feature: 1 element, standard packaging of 10, non-indicating fuse. Benefit: Simple stocking, reduced inventory complexity, and clear maintenance planning. Application: OEMs and service teams needing predictable, scalable protection options for modular panel builds.
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FAQs
The JKS-40 uses ferrule end x ferrule end connections, a single-element Class J design, and standard packaging (10 pieces per pack). It fits typical Bussmann-series fuse blocks and motor control panels, with a compact 2.38 in length, 1.06 in height, and 1.06 in width for easy integration.
JKS-40 is rated for 40 A with a 200 kAIC interrupt rating at 600 Vac. This fast-acting, current-limiting fuse provides reliable fault clearance in high-energy circuits while maintaining selectivity in protective schemes.
Yes. The JKS-40 fuse carries CE marking and RoHS compliance, aligning with European regulatory requirements and environmental standards for modern industrial equipment.
Absolutely. Designed for motor starters and drives protection, the JKS-40 delivers rapid fault isolation and compatible Class J performance within standard Bussmann-series holders, helping minimize downtime in MCCs and control panels.
Choosing JKS-40 offers a proven 40 A, 200 kAIC at 600 Vac protection with CE and RoHS compliance, ferrule-end connections for quick replacement, and standard packaging to simplify stocking. The result is improved uptime, better protection coordination, and streamlined procurement for industrial environments.