Eaton JKS-80 Fuse - 200 kAIC at 600V, Class J fast-acting
Part Number: JKS-80
Quick Summary
The Eaton JKS-80 fuse provides fast-acting current-limiting protection for industrial control panels and motor circuits. Choosing the right fuse can be challenging when you need both a high interrupt rating and a compact footprint within limited panel space. This device is CE marked and RoHS compliant, reinforcing global safety and environmental requirements, while its Class J designation signals predictable coordination with nearby fuses. For OEMs and maintenance teams, the 4.63 in length, 1.13 in width, and 1.13 in height footprint, along with an 80 A rating, deliver reliable protection with straightforward replacement. Built for ease of procurement and consistent performance, the JKS-80 aligns with Bussmann series standards and reduces total downtime.
Product Information
Extended Description
JKS-80 Eaton: Eaton Bussmann Series Class J fuse, JKS, fast-acting, current limiting fuse, 80 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series JKS fuse
Catalog Number
JKS-80
UPC
051712630801
Product Length/Depth
4.63 in
Product Height
1.13 in
Product Width
1.13 in
Product Weight
0.29 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
80 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
5
Special features
Indicating
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Eaton Specification Sheet - JKS-80
Bussmann series JKS fast-acting Class J fuses, 70-600A technical data sheet no. 1027
Datasheet - FNQ-30
Feature → Business Impact → Application: The JKS-80 is a Class J, fast-acting, current-limiting fuse, delivering rapid fault clearing that minimizes damage to motors and power distribution panels. This translates to reduced downtime and lower repair costs for industrial equipment while simplifying coordination with nearby protective devices in control cabinets. Application: Suitable for motor controls and panel boards where space is at a premium and precise protection is needed in harsh industrial environments. Feature → Business Impact → Application: With an 80 A rating and a 600 V operating range, the fuse supports common industrial loads while maintaining a high 200 kAIC interrupt rating at 600 Vac; engineers gain reliable fault isolation and improved gear longevity. Application: Ideal for high-inrush loads in machine tooling and automation systems. Feature → Business Impact → Application: Bolted blade end connections provide secure, vibration-resistant installations that reduce contact resistance and maintenance calls. Application: Effective in retrofit projects and new builds where robust electrical connections are required. Feature → Business Impact → Application: CE Marked and RoHS Compliant status simplifies global compliance and market access, lowering certification costs for multinational deployments. Application: Global manufacturing environments with stringent regulatory requirements. Feature → Business Impact → Application: The compact footprint (4.63 in L × 1.13 in W × 1.13 in H) and 0.29 lb weight support easy panel layout and logistics, enabling faster stock turnover and streamlined procurement. Application: Denser panel designs and multi-fuse assemblies in control closets. Feature → Business Impact → Application: Non-indicating fuse indicator reduces false maintenance alerts in busy control rooms, while the “Special features” note indicates targeted visibility when needed. Application: Industrial cabinets where straightforward, low-maintenance protection is desirable.
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FAQs
To install the JKS-80, power down the equipment and verify the panel is rated for 600 V AC. Insert the fuse into a compatible holder with bolted blade ends, ensuring solid contact and proper seating. Maintain proper clearance and torque per the associated Eaton datasheet, and confirm full engagement before restoring power. When replacing, choose the same model to preserve classification and interrupt rating.
The JKS-80 is rated for 80 A with a 600 V voltage rating and provides an interrupt rating of 200 kAIC at 600 Vac. It is a fast-acting, current-limiting Class J fuse designed to protect circuits from short-circuit faults quickly, reducing damage to downstream equipment and enabling faster fault diagnosis.
Yes, the JKS-80 is well-suited for AC motor protection in control panels and motor control centers. Its fast-acting, current-limiting characteristics help minimize heat and wear on motor windings during fault conditions. It is designed for 600 V AC systems and should not be used for DC applications unless specified in the datasheet.
The JKS-80 carries CE Marking and RoHS compliance, supporting global regulatory requirements and environmentally responsible manufacturing. While essential for many markets, always verify local regulations and consult Eaton datasheets (1027-DS for JKS) for any additional certifications relevant to your region or industry.
Keeping a stocked pack (the JKS-80 is sold with a 5-unit quantity) reduces downtime by enabling rapid swap-outs during fault events. This minimizes panel downtime and maintenance labor, improving overall equipment availability in automation lines and reducing project lead times for replacements in spare parts inventories.