Eaton JJN-40LS fuse - Class T Current-limiting
Part Number: JJN-40LS
Quick Summary
The Eaton JJN-40LS fuse is a current-limiting device used to protect electrical distribution in large complexes. For engineers, protecting multi-family meter stacks and VFD-powered feeds without nuisance trips is a critical challenge, and reliable protection is essential. While the provided data notes RoHS compliance, it does not list additional third-party certifications; always verify required approvals with Eaton for your region. Designed for space-constrained panels, this Class T fuse pairs compact form factor with robust protection, reducing arc energy and downstream damage. Its Bussmann lineage supports easy integration, predictable operation, and lower total cost of ownership through fewer fuse replacements and simplified stocking.
Product Information
Extended Description
JJN-40LS Eaton: Eaton Bussmann series JJN fuse, Current-limiting, Large apartment complexes, Multi-family meter stacks, VFD line protection, 40 A, Class T, Non-indicating, Standard
Product Name
Eaton Bussmann series JJN fuse
Catalog Number
JJN-40LS
UPC
051712503020
Product Length/Depth
0.88 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.3 lb
Warranty
Not Applicable
Compliances
Not Applicable RoHS Compliant
Packaging type
Standard
Class
Class T
Fuse indicator
Non-indicating
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - JJN-40LS
Feature → 40 A current rating with current-limiting capability provides immediate fault interruption, limiting arc energy and downstream damage. Business Impact → Protects motor drives, feeders, and metering stacks, reducing downtime and repair costs. Application → Ideal for VFD line protection in large apartment complexes and multi-family installations where load surges are common. Paragraph continues with further features to illustrate benefits. Feature → Class T fuse, non-indicating design. Business Impact → Enables precise coordination with upstream protection without relying on visual fuse indicators, simplifying panel design. Application → Suited for space-constrained panels where indicator lights are unnecessary. Feature → RoHS compliant. Business Impact → Supports regulatory compliance and supplier requirements, easing procurement in regulated markets. Application → Appropriate for building automation and electrical assemblies needing RoHS control. Paragraph continues with compact footprint and compatibility. Feature → Small physical footprint (0.88 in L × 0.56 in W × 0.56 in H) and 0.3 lb weight. Business Impact → Frees panel space and simplifies installation, enabling tighter control cabinets. Application → Beneficial in compact metering and distribution panels. Feature → Standard packaging and Bussmann series compatibility (Catalog JJN-40LS, UPC 051712503020). Business Impact → Streamlines stocking, sourcing, and replacement planning, reducing lead times. Application → Works with Eaton Bussmann fuse holders and standard Bussmann catalogs for procurement.
Get a Quick Quote for a Eaton JJN-40LS
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton JJN-40LS?
Enquire Now
FAQs
The JJN-40LS is designed as a standard Bussmann series fuse with catalog number JJN-40LS, fitting typical Bussmann fuse holders used in Eaton panels. Its compact dimensions (0.88 in L x 0.56 in W x 0.56 in H) and standard packaging streamline field replacement and panel retrofits, reducing install time and minimizing panel redesign.
JJN-40LS is a current-limiting fuse with a 40 A rating and Class T construction, which quickly interrupts fault currents to minimize arcing and downstream damage. It is well-suited for protecting VFD feeds and large-meter stacks in multi-family installations, where rapid fault clearing improves system reliability and reduces equipment wear.
Yes, the JJN-40LS is RoHS compliant. The provided data does not list additional third-party certifications (such as CE or UL). Before purchase, confirm regional certification requirements with Eaton to ensure full compliance for your specific installation environment.
Yes. With a 40 A current rating and current-limiting action, the JJN-40LS helps protect VFD lines and multi-family meter stacks from high fault currents, reducing the likelihood of nuisance trips and safeguarding downstream devices, cables, and transformers within the distribution path.
The fuse occupies a compact footprint (0.88 in length, 0.56 in width, 0.56 in height) and weighs 0.3 lb, making installation easier in tight panels. It ships in standard Bussmann packaging and is associated with UPC 051712503020, simplifying stock management and procurement alongside other Bussmann/JJN series products.