Eaton JKS-125 Fuse - 200 kAIC at 600V
Part Number: JKS-125
Quick Summary
The Eaton JKS-125 fuse delivers fast-acting overcurrent protection for industrial electrical panels and motor drives. Engineers often wrestle with balancing selectivity against high interrupt ratings, risking nuisance trips or insufficient protection. This Class J, RoHS-compliant device provides 125 A at 600 V with a 200 kAIC interrupt rating, featuring a rejection-style bolted blade end for dependable, safe installation. By using a single Bussmann-series solution across utility or manufacturing lines, maintenance costs shrink while uptime improves. The result is a cost-effective protection strategy that aligns with factory modernization goals and regulatory compliance.
Product Information
Extended Description
JKS-125 Eaton: Eaton Bussmann Series Class J fuse, JKS, fast-acting, current limiting fuse, 125 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series JKS fuse
Catalog Number
JKS-125
UPC
051712631259
Product Length/Depth
5.75 in
Product Height
1.5 in
Product Width
1.5 in
Product Weight
0.855 lb
Warranty
Not Applicable
Compliances
RoHS Compliant
Amperage Rating
125 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
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Bussmann series JKS fast-acting Class J fuses, 70-600A technical data sheet no. 1027
Feature: Fast-acting Class J fuse with current-limiting performance reduces fault energy, protecting conductors and sensitive equipment and shortening outage durations. Business impact: minimizes arc energy and enables quicker fault isolation, leading to higher equipment availability. Application: control panels and motor drives in manufacturing environments where uptime and reliable protection are critical. Feature: 125 A, 600 V rating with a 200 kAIC interrupt rating provides reliable short-circuit clearance, enabling upstream protection coordination and reducing nuisance trips. Application: motor control centers, conveyor drives, and automation panels across industrial facilities. Feature: Rejection-style fuse with bolted blade ends prevents mis-insertion and ensures a secure, vibration-resistant connection, accelerating installation and maintenance. Application: factory floors and packaging lines with high vibration or frequent access. Feature: RoHS compliant design supports regulatory compliance and sustainability programs in EU and other markets. Application: any RoHS-focused manufacturing operation seeking green protection solutions. Feature: Standard packaging and a compact footprint (5.75 in L, 1.5 in W, 1.5 in H; 0.855 lb) simplifies stocking and retrofit in existing Bussmann-Series holders. Application: field upgrades and service replacements in mature equipment fleets.
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FAQs
Install the JKS-125 using the bolted blade ends into a compatible Bussmann Series fuse holder. Ensure correct orientation, tighten terminals to manufacturer torque specifications, and verify solid contact surfaces. Use appropriate PPE and follow your panel's wiring schematic to prevent cross-connection. This rejection-style fuse design helps prevent insertion in the wrong slot, reducing mis-wiring risks during maintenance.
The JKS-125 provides a 125 A rating with a 600 V voltage rating and a 200 kAIC interrupt capability, enabling fast fault clearance and coordination with upstream protection. This combination is ideal for motor drives, conveyors, and heavy automation circuits where quick isolation minimizes damage and downtime while maintaining selectivity.
Yes, the JKS-125 is RoHS compliant, meaning it meets environmental and hazardous substance restrictions for electronic components. This helps your facility maintain regulatory alignment across regions, supports sustainability goals, and simplifies compliance documentation for audits and supplier requirements.
Absolutely. The 125 A at 600 V with a 200 kAIC interrupt rating is well suited for protecting motor controllers, drives, and power distribution blocks. The fast-acting, current-limiting design minimizes arc energy, while the bolted blade ends provide robust installation in vibration-prone machine environments.
Adopting the JKS-125 can reduce downtime by delivering reliable short-circuit protection and fewer nuisance trips. Its standardized Class J family simplifies spare parts stocking, accelerates replacements, and improves uptime metrics. The RoHS compliance and robust mechanical design translate to lower maintenance costs and longer equipment life in automated lines.