Eaton JKS-350 Fuse - 200 kAIC at 600 Vac Class J
Part Number: JKS-350
Quick Summary
The Eaton JKS-350 fuse provides fast-acting overcurrent protection for motor drives and industrial controls. Engineers often struggle with nuisance shutdowns during startup or fault events when protection is either too slow or improperly sized. This device is RoHS compliant and designed to Class J specifications, rated for 600 V with a 200 kAIC interrupt rating. Implementing this fuse in control panels and motor starter assemblies minimizes arc faults, reduces downtime, and simplifies parts stocking with a single 350 A solution. The combination of current-limiting performance and robust physical design supports reliable, compliant protection across harsh industrial environments.
Product Information
Extended Description
JKS-350 Eaton: Eaton Bussmann Series Class J fuse, JKS, fast-acting, current limiting fuse, 350 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series JKS fuse
Catalog Number
JKS-350
UPC
051712633505
Product Length/Depth
7.13 in
Product Height
2 in
Product Width
2 in
Product Weight
1.85 lb
Warranty
Not Applicable
Compliances
RoHS Compliant
Amperage Rating
350 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 fuse. Business impact: Reduces fault energy and arc flash exposure, protecting conductors and equipment while enabling quicker fault isolation. Application: Suitable for motor controllers, drives, and branch circuits in manufacturing lines. Feature: 350 A amperage rating. Business impact: Aligns protection with mid-size power feeds, enabling smaller panel footprints and fewer spare parts. Application: Industrial control panels and feeder circuits. Feature: 200 kAIC interrupt rating at 600 Vac. Business impact: Handles high fault currents without compromising equipment safety, lowering the risk of cascading outages. Application: Main distribution panels and motor starter assemblies in high-energy environments. Feature: Bolted blade end connections. Business impact: Ensures secure, vibration-resistant installation with straightforward field replacement. Application: OEM and retrofit projects in harsh industrial settings. Feature: RoHS Compliant. Business impact: Regulatory alignment and easier procurement across global sites. Application: EU and global manufacturing environments. Feature: Physical dimensions and weight (7.13 in length, 2x2 in, 1.85 lb). Business impact: Fits standard fuse holders and tight panel layouts, improving installation efficiency. Application: Control enclosures and compact power distribution racks.
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FAQs
For proper installation, use the bolted blade end x bolted blade end configuration and ensure secure mounting in a vented, level position within the panel. Verify compatibility with standard Bussmann JKS holders, observe clearance requirements, and follow Eaton datasheet guidelines to prevent improper seating that could compromise interruption performance.
The JKS-350 is rated for 350 A with an interrupt rating of 200 kAIC at 600 Vac. It supports a 600 V maximum system voltage and uses a single fuse element. These specifications enable reliable protection for medium-to-high current motor circuits while ensuring rapid fault interruption in distribution panels.
Yes, the JKS-350 is RoHS compliant, which supports regulatory compliance in many global manufacturing sites. Its Class J fast-acting design provides precise protection for motor drives and control circuits, helping maintain safety standards and streamline cross-border procurement.
This fuse excels in motor control centers, switchgear, and industrial automation panels where high fault currents and space limitations exist. Its 350 A rating and 200 kAIC interruption make it appropriate for medium-to-large loads, while bolted blade ends ensure robust field installation in rugged environments.
The JKS-350 rapidly interrupts faults, reducing arc energy and limiting collateral damage to downstream components. Its standardized dimensions and non-indicating design simplify stocking and replacement, lowering maintenance downtime and improving overall equipment reliability in busy production lines.