Eaton JJN-250 Fuse - Class T, 250 A, 200 kAIC
Part Number: JJN-250
Quick Summary
The Eaton JJN-250 fuse is a current-limiting device for VFD protection and motor drives in industrial power circuits. Engineers often confront nuisance trips and damaging inrush currents when drives start up. It carries CE marking and RoHS compliance, with Class T construction for dependable protection in demanding environments. With bolted blade end connections and standard packaging, installation remains straightforward for OEMs and retrofit projects. Rated at 250 A with 300 VAC and 160 VDC capability, it scales from small lines to high-power feeders while supporting predictable maintenance intervals.
Product Information
Extended Description
JJN-250 Eaton: Eaton Bussmann series JJN fuse, Current-limiting, VFD line protection, 250 A, Class T, Non-indicating, Bolted blade end x bolted blade end, 20 kAIC at 160 Vdc, 200 kAIC at 300 V, Standard, 1, 300 V, 160 Vdc
Product Name
Eaton Bussmann series JJN fuse
Catalog Number
JJN-250
UPC
051712627092
Product Length/Depth
2.75 in
Product Height
1 in
Product Width
1 in
Product Weight
0.25 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
250 A
Interrupt rating
200 kAIC at 300 Vac 20 kAIC at 160 Vdc
Voltage rating
300 Vac, 160 Vdc
Packaging type
Standard
Class
Class T
Connection
Bolted blade end x bolted blade end
Fuse indicator
Non-indicating
Quantity
1
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Bussmann series Fuseology
JJN-100~TRON FAST ACTING FUSE CLASS T
Feature: Current-limiting, Class T fuse for VFD line protection → Business Impact: Reduces fault current and thermal stress on drives, improving uptime and extending motor life → Application: Industrial motor drives and drive panels with variable speed controls. Feature: 250 A amperage rating → Business Impact: Provides precise protection for high-current feeders, minimizing conductor damage and energy waste → Application: Main feeder protection in manufacturing lines and process equipment. Feature: Interrupt ratings of 200 kAIC at 300 VAC and 20 kAIC at 160 VDC → Business Impact: Withstands severe short-circuit events, safeguarding components and reducing maintenance costs → Application: High-energy drive systems and critical plant feeders. Feature: Bolted blade end x bolted blade end connections → Business Impact: Enables secure, fast installation with reliable contact integrity → Application: Panel mounting and field retrofits where robust mechanical connection is essential. Feature: Non-indicating, standard packaging, CE RoHS compliant, Class T designation → Business Impact: Simplifies status monitoring in dense panels while ensuring regulatory compliance → Application: Global manufacturing environments requiring compliant protection solutions. Feature: Comprehensive compatibility with Bussmann series and standard cataloging → Business Impact: Streamlines sourcing and stocking for procurement teams, reducing downtime and part variance → Application: OEMs and maintenance teams stocking common fuse types for broad use.
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FAQs
The JJN-250 uses bolted blade end x bolted blade end connections, enabling secure, fast installation in standard panel assemblies. Ensure the panel bus bars or terminals are rated for 250 A and √ tighten to manufacturer torque guidelines. This non-indicating fuse simplifies placement when multiple fuses are used in a dense panel, aiding quick diagnosis during maintenance.
The JJN-250 is rated for 250 A with an interrupt rating of 200 kAIC at 300 VAC and 20 kAIC at 160 VDC. It supports 300 VAC and 160 VDC voltage ratings, making it suitable for motor drives and drive feeders that experience high fault currents. These specs help protect downstream equipment while meeting industry protection standards.
Yes. The JJN-250 is designed for VFD line protection, offering current-limiting performance and Class T construction. Its high interrupt ratings and robust construction reduce drive damage from faults or inrush, while its standard packaging simplifies integration into drive cabinets and switchgear assemblies.
The JJN-250 carries CE marking and RoHS compliance, aligning with EU safety and environmental regulations. It is classified as Class T and features non-indicating status, aiding compliant implementation in modern electrical protection schemes across global facilities.
With a standard packaging type and non-indicating design, inspection focuses on physical integrity and panel fit rather than indicator status. Plan for replacement based on periodic maintenance cycles and observed short-circuit events in high-demand lines. The 250 A rating supports scalable protection as plant loads grow, helping control lifecycle costs.