Eaton JKS-4 Fuse - Class J current-limiting 200 kAIC at 600V
Part Number: JKS-4
Quick Summary
The Eaton JKS-4 fuse is a Class J, fast-acting, current-limiting device designed to protect branch circuits and control panels. It delivers rapid interruption to prevent damage from overcurrents while minimizing disruption to sensitive loads. Engineers often struggle with nuisance tripping and compatibility when upgrading legacy protection schemes, but the JKS-4’s precise 4 A rating and 200 kAIC interrupt rating offer predictable protection for 600 V systems. CE marking and RoHS compliance further ensure adherence to global product standards, reducing regulatory risk in multinational deployments. This fuse also supports ferrule-end terminations and standard packaging, enabling straightforward field or panel-mount replacement. Use it to improve reliability without sacrificing accessibility or installation efficiency.
Product Information
Extended Description
JKS-4 Eaton: Eaton Bussmann Series Class J fuse, JKS, fast-acting, current limiting fuse, 4 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series JKS fuse
Catalog Number
JKS-4
UPC
051712630047
EAN
5027590445146
Product Length/Depth
2.25 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.095 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
4 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
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series JKS Class J data sheet no. 1026
Feature: Class J fast-acting, current-limiting protection for 4 A loads → Business Impact: Reduces fault energy and protects downstream equipment, enabling longer component life and less downtime → Application: Control panels and small motor circuits in medium-voltage environments. Feature: 200 kAIC interrupt rating at 600 V → Business Impact: Withstands high-energy faults, minimizing fire risk and arc energy in critical panels → Application: Main and feeder services in industrial automation. Feature: Ferrule end x ferrule end connection → Business Impact: Simplifies secure, repeatable wiring with reliable contact pressure -> Application: Panel wiring and retrofit of existing Bussmann Buss bars. Feature: Rejection style, non-indicating design → Business Impact: Easier correct installation while reducing maintenance checks → Application: High-volume panel assemblies and OEM equipment. Feature: Packaging with standard quantity of 10 and RoHS/CE compliance → Business Impact: Streamlines stocking, regulatory compliance, and cross-border deployment → Application: Global manufacturing lines and distribution centers. Feature: Class J designation and 4 A rating → Business Impact: Consistent protective coordination with other Class J devices and predictable replacement cycles → Application: Protection for control circuits and small-load branches in machines and process lines.
Get a Quick Quote for a Eaton JKS-4
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton JKS-4?
Enquire Now
FAQs
Installation of the Eaton JKS-4 Class J fuse requires matching ferrule-end connections and a 600 V system rating. Ensure correct orientation and seating to achieve reliable contact. Use standard mounting practices in a protected panel, verify the 4 A amperage rating aligns with the protected circuit, and replace only with the same Class J, 4 A device to maintain coordination and interrupt performance. The ferrule ends simplify wiring and reduce the risk of contact fatigue on repeated insertions.
The JKS-4 fuse has an amperage rating of 4 A, a voltage rating of 600 V, and an interrupt rating of 200 kAIC. These specifications indicate fast-acting protection with high fault-energy tolerance, making it suitable for protecting small to medium sized branches and control circuits in industrial equipment while maintaining safe clearance in fault events.
Yes. The JKS-4 is a Class J, 4 A, current-limiting fuse purpose-built for control panels and small-load branches. Its fast-acting response minimizes damage during overcurrent events and coordinates with other Class J devices in protective schemes. It is especially appropriate for devices powered at 600 V and those requiring reliable short-circuit protection with minimal downtime.
The JKS-4 is CE marked and RoHS compliant, reflecting adherence to European and environmental compliance standards. These certifications help reduce regulatory risk for global deployments and confirm that the fuse materials and manufacturing meet recognized performance and environmental criteria. For multi-region installations, this simplifies procurement and documentation during audits.
The JKS-4’s current-limiting, fast-acting design reduces fault energies, which lowers arc damage and shortens downtime after faults. Its 200 kAIC interrupt rating provides confidence in high-energy fault events, potentially extending service life for protected equipment. The ferrule-end connections enable straightforward replacements and predictable performance, improving maintenance efficiency and reducing total cost of ownership over time.