Eaton JJN-3 Fuse - Class T, 200 kAIC at 300 Vac
Part Number: JJN-3
Quick Summary
The Eaton JJN-3 fuse provides current-limiting protection for feeder circuits in large multi-family and commercial buildings. Projects often struggle with nuisance trips and extended downtime when protecting shared meters, VFDs, and other dynamic loads. This fuse carries CE marking and RoHS compliance, aligning with regulatory requirements, while its Class T non-indicating design simplifies installation. Choosing this Bussmann series fuse delivers reliable protection, easier procurement, and predictable maintenance costs for electrical protection and circuit control applications.
Product Information
Extended Description
JJN-3 Eaton: Eaton Bussmann series JJN fuse, Current-limiting, Large apartment complexes, Multi-family meter stacks, VFD line protection, 3 A, Class T, Non-indicating, 200 kAIC at 300 Vac, Standard, 10, 300 V
Product Name
Eaton Bussmann series JJN fuse
Catalog Number
JJN-3
UPC
051712627078
Product Length/Depth
0.88 in
Product Height
0.41 in
Product Width
0.41 in
Product Weight
0.1 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
3 A
Interrupt rating
200 kAIC at 300 Vac
Voltage rating
300 V
Packaging type
Standard
Class
Class T
Fuse indicator
Non-indicating
Quantity
10
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
JJN-100~TRON FAST ACTING FUSE CLASS T
The JJN-3 fuse is a current-limiting Class T device rated at 3 A, designed to rapidly interrupt faults while minimizing heat and arc energy in downstream equipment. This translates to improved equipment longevity and reduced downtime for service entrances and VFD-fed loads in large apartment complexes. With an interrupt rating of 200 kAIC at 300 Vac, it can safely clear high-magnitude faults without compromising upstream protection, a critical capability for multi-family meter stacks and commercial feeders where fault levels can spike. The non-indicating, standard packaging design simplifies installation and inventory management, while predictable replacement schedules make busy electrical rooms easier to navigate. CE marking and RoHS compliance ensure regulatory alignment across EU and other markets, reducing qualification time for projects and improving supplier risk profiles. The JJN-3 is compatible with Bussmann series fuse holders and standard protection blocks; its compact dimensions fit tight spaces in meter stacks. From a ROI standpoint, the 3 A rating and high interrupt ability contribute to longer MTBF and lower maintenance costs, with 10-unit packaging streamlining procurement for larger installations.
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FAQs
The JJN-3 is a compact 0.88 in long, 0.41 in wide fuse designed for standard Bussmann fuse holders and protection blocks. It uses the catalog number JJN-3 and UPC 051712627078, enabling straightforward stocking in project inventories. Ensure compatibility with 300 V systems and match the 3 A rating to the circuit protection requirements to avoid nuisance tripping or inadequate protection.
The fuse provides a 3 A rating with a 200 kAIC interrupt capability at 300 Vac, delivering fast fault interruption and high fault-current tolerance. This combination minimizes downstream damage to feeds servicing VFDs and shared meter stacks, improving reliability and reducing maintenance for multi-family or commercial installations.
Yes. Its Class T construction, 3 A rating, and 200 kAIC interrupt rating at 300 Vac are well-suited for high-energy fault environments in multi-family meter banks. The small footprint and standard packaging (10 units per pack) simplify installation in dense electrical rooms and help maintain orderly inventories.
The JJN-3 fuse is CE marked and RoHS compliant, aligning with European regulatory requirements and lead-free material standards. While UL or other certifications are not listed in the provided data, the CE RoHS compliance supports global procurement and regulatory readiness for many commercial and residential projects.
Access Bussmann full line catalogs and technical datasheets from Eaton’s site, including the JJN-100~TRON datasheet, and related resources. Additional materials include the RoHS search tool and the Bussmann Fuseology video for overview and installation guidance, helping engineers validate spec compatibility and installation practices.