Eaton JJN-25L Fuse - Class T, 25 A Bolt Mount
Part Number: JJN-25L
Quick Summary
Eaton JJN-25L fuse is a current-limiting protective device designed for motor drives and large distribution panels. In projects involving large apartment complexes or multi-family meter stacks, unexpected trips can disrupt service and drive up maintenance costs. Note that explicit certifications such as CE, UL, or IP ratings aren’t listed in the provided data; verify with Eaton’s specification sheet for your project approvals. This fuse delivers reliable short-circuit protection and current limiting in a compact form, helping engineers simplify panel design, streamline procurement, and improve uptime in demanding electrical protection scenarios. The combination of Class T construction, bolt mounting, and Bussmann-series compatibility supports efficient, scalable protection strategies for modern facilities.
Product Information
Extended Description
JJN-25L Eaton: Eaton Bussmann series JJN fuse, Current-limiting, Large apartment complexes, Multi-family meter stacks, VFD line protection, 25 A, Class T, Non-indicating, Bolt, Standard
Product Name
Eaton Bussmann series JJN fuse
Catalog Number
JJN-25L
UPC
051712367271
Product Length/Depth
0.88 in
Product Height
0.41 in
Product Width
0.41 in
Product Weight
0.25 lb
Warranty
Not Applicable
Compliances
Not Applicable
Packaging type
Standard
Class
Class T
Fuse indicator
Non-indicating
Mounting method
Bolt
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - JJN-25L
The JJN-25L uses a current-limiting design rated at 25 A with Class T characteristics, which significantly reduces fault-current energy to protect downstream components such as motor drives, panels, and feeders. This protection translates into minimized downtime and simpler fault cleanup, particularly valuable in VFD line protection within large facilities. In practical terms, designers and technicians gain safer, faster fault response and improved system resilience. The bolt-on mounting and compact footprint (0.88 in length, 0.41 in width, 0.41 in height) enable easy integration into crowded switchgear and meter stacks, delivering space savings and faster installation in multi-tenant installations. Compatibility with the Bussmann-series family supports a seamless replacement strategy and standardized maintenance. The non-indicating design reduces visual clutter in high-density panels, while still allowing remote monitoring workflows to flag faults through system-level diagnostics. With a standard packaging type, procurement becomes predictable, supporting streamlined inventory management for large facilities. Overall, the JJN-25L combines protection performance with practical installation benefits to reduce operating costs and improve reliability in electrical protection applications.
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FAQs
The JJN-25L employs bolt mounting for a secure, vibration-resistant connection. Its compact physical footprint measures 0.88 inches in length, 0.41 inches in width, and 0.41 inches in height, enabling straightforward installation in crowded electrical panels and meter stacks.
The fuse is rated for 25 A and uses a Class T classification with current-limiting characteristics. It is non-indicating, meaning it does not provide a visual trip indication, and is designed for protection of motor drives and related circuits in electrical protection schemes.
Yes. The 25 A current-limiting Class T fuse is well-suited for VFD line protection, helping to limit fault current, protect downstream components, and minimize downtime in large apartment complexes and multi-family meter stacks. Always confirm project-specific approvals from official Eaton datasheets.
The provided data lists Compliances as Not Applicable and no warranty. For regulatory certifications (such as CE or UL) or IP ratings, verify the official Eaton specification sheet or contact Eaton technical support to confirm project-specific approvals.
The JJN-25L delivers reduced downtime by limiting fault currents and protecting sensitive downstream equipment, which lowers repair costs and service interruptions. Its compact, bolt-on design simplifies installation and future replacements, contributing to lower labor costs and a faster return on investment in large facility protection schemes.