Eaton JJN-125 Fuse - Class T 125 A current-limiting protection
Part Number: JJN-125
Quick Summary
The Eaton Bussmann series JJN-125 fuse provides current-limiting protection for drives and VFD line circuits in industrial panels. In demanding environments, nuisance trips and slow fault clearing can lead to unplanned downtime and equipment damage. This Class T fuse is CE-marked and RoHS compliant, delivering reliable protection while meeting European safety and environmental standards. With a 125 A rating and bolted blade end connections, it installs quickly in standard Bussmann series holders, reducing commissioning time. By combining robust interrupt performance with compact dimensions, this fuse supports safer, more maintainable electrical protection in modern automation systems.
Product Information
Extended Description
JJN-125 Eaton: Eaton Bussmann series JJN fuse, Current-limiting, VFD line protection, 125 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-125
UPC
051712627122
Product Length/Depth
2.44 in
Product Height
0.88 in
Product Width
0.88 in
Product Weight
0.0088 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
125 A
Interrupt rating
20 kAIC at 160 Vdc 200 kAIC at 300 Vac
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
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
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Bussmann series Fuseology
JJN-100~TRON FAST ACTING FUSE CLASS T
Feature: 125 A current-limiting Class T fuse provides targeted protection for motor drives and low-voltage circuits. Business Impact: Reduces arc energy and minimizes damage to upstream components, enabling higher line reliability. Application: Suitable for VFD protected feeders in MCCs and panel boards. Feature: High interrupt ratings of 20 kAIC at 160 Vdc and 200 kAIC at 300 Vac enable fast fault clearance. Business Impact: Limits fault energy, protecting downstream devices and shortening recovery time after a fault. Application: Critical protection in high-inrush applications like conveyors and pumps. Feature: Bolted blade end connections ensure secure, vibration-resistant mounting. Business Impact: Simplifies installation and maintains electrical integrity in harsh environments. Application: Retrofit and new installations in standard Bussmann holders. Feature: Compliance and packaging—CE Marked and RoHS compliant with standard packaging. Business Impact: Streamlines procurement and regulatory adherence, reducing audit risk. Application: Global manufacturing environments with strict compliance needs. Feature: Compact physical footprint—2.44 in length, 0.88 in width and height, 0.0088 lb weight. Business Impact: Maximizes enclosure density and lowers panel heat load. Application: Space-constrained control panels and small-form-factor power distribution.
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FAQs
Yes. The JJN-125 uses bolted blade ends and is designed for direct compatibility with Eaton Bussmann series holders, allowing straightforward retrofits or new installations in standard electrical protection assemblies.
The fuse provides 125 A with interrupt ratings of 20 kAIC at 160 Vdc and 200 kAIC at 300 Vac, with a voltage rating of 300 Vac / 160 Vdc, suitable for mixed AC/DC line protection in drive systems.
Ideal for motor drives and VFD line protection in industrial panels, MCCs, and automation cabinets where reliable current-limiting protection and fast fault clearing reduce downtime and equipment damage.
The JJN-125 is CE-marked and RoHS compliant, meeting European safety and environmental standards, which supports regulatory compliance and easier global procurement.
Its current-limiting action minimizes fault energy and downstream damage, reducing repair time and spare parts usage. Its robust construction and easy installation also shorten downtime during maintenance cycles, offering a favorable total cost of ownership in automation environments.