Eaton JJN-300 Fuse - Class T, 300 A, 200 kAIC at 300 Vac
Part Number: JJN-300
Quick Summary
The Eaton JJN-300 fuse provides current-limiting protection for VFD lines in industrial control panels. Manufacturing environments often contend with nuisance trips and surge currents during startup, which can disrupt production and damage equipment. This Class T, 300 A fuse carries a high interrupt rating and is CE marked with RoHS compliance, aligning with regional standards for electrical protection. By combining robustness with standard Bussmann series compatibility, it offers reliable safeguarding of drives and motors while simplifying procurement and maintenance for panel builders and OEMs.
Product Information
Extended Description
JJN-300 Eaton: Eaton Bussmann series JJN fuse, Current-limiting, VFD line protection, 300 A, Class T, Non-indicating, Bolted blade end x bolted blade end, 200 kAIC at 300 V, 20 kAIC at 160 Vdc, Standard, 1, 300 V, 160 Vdc
Product Name
Eaton Bussmann series JJN fuse
Catalog Number
JJN-300
UPC
051712627306
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
300 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
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
JJN-100~TRON FAST ACTING FUSE CLASS T
Feature: Current-limiting protection reduces fault energy and protects downstream components → business impact: minimizes downtime and equipment damage, enabling smoother motor starts and more predictable protection in VFD applications → application: ideal for VFD line protection in industrial control panels. Feature: 300 A amperage rating with 200 kAIC at 300 Vac and 20 kAIC at 160 Vdc → business impact: supports safe interruption of high fault currents without unnecessary fuse replacement, improving system reliability → application: suitable for power feeds to motor drives and distribution sections. Feature: Bolted blade end x bolted blade end with non-indicating design → business impact: fast, secure installation and cost-effective maintenance without indicator components → application: retrofit and new builds in compact control enclosures. Feature: Class T fuse with CE Marked and RoHS Compliant → business impact: regulatory compliance and streamlined international sourcing → application: European and global manufacturing environments seeking compliant protection. Feature: Packaging type Standard with 1 piece per pack → business impact: simplifies stocking, reduces waste, and supports just-in-time procurement → application: OEM assembly lines and service teams.
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FAQs
Yes. The JJN-300 uses bolted blade end connections and follows the standard Bussmann JJN footprint, enabling straightforward installation in common panelboards and enclosures. Ensure secure bolting and verify alignment with the busbar configuration to maintain optimal protection and contact integrity.
The JJN-300 provides 200 kAIC interrupt rating at 300 Vac and 20 kAIC at 160 Vdc, with a voltage rating of 300 Vac / 160 Vdc and a 300 A amperage rating. These specs support reliable interruption of high fault currents while accommodating mixed AC/DC environments typical in VFD-powered systems.
Yes. The JJN-300 is designed for VFD line protection in industrial controls, delivering current-limiting protection during startup transients and fault events. Its Class T construction and highinterrupt ratings make it suitable for motor drives, inverter-fed loads, and related power distribution within manufacturing facilities.
The JJN-300 is CE marked and RoHS compliant, aligning with European regulatory requirements. The Class T designation denotes its protection characteristics. These certifications facilitate international procurement and ensure safer, standards-aligned operation in controlled environments.
By offering current-limiting protection and a high interrupt rating, the JJN-300 reduces nuisance trips and fuse replacements, translating to less downtime and lower maintenance costs. The non-indicating design lowers panel complexity, while standard packaging and compatibility with Bussmann series simplify stocking and procurement, delivering faster repairs and greater uptime.