Eaton LPJ-125SPI Fuse - Class J 125 A, 600 Vac
Part Number: LPJ-125SPI
Quick Summary
Eaton LPJ-125SPI fuse provides time-delay protection for motor and drive circuits in industrial equipment. Unreliable overcurrent protection can cause costly downtime and unpredictable trips during startup. This Class J device is CE marked and RoHS compliant, with a 125 A rating and an interrupt capability of 300 kAIC at 600 Vac. Featuring bolted blade end connections and dual-element protection, it offers reliable motor protection in compact form. For manufacturers and integrators, the LPJ-125SPI delivers robust protection, fast installation, and predictable maintenance for drive trains and feeders.
Product Information
Extended Description
LPJ-125SPI Eaton: Eaton Bussmann Series Class J fuse, LPJ, time-delay, dual-element current limiting fuse, 125 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPJ fuse
Catalog Number
LPJ-125SPI
UPC
051712627986
Product Length/Depth
5.75 in
Product Height
1.5 in
Product Width
1.5 in
Product Weight
0.8 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
125 A
Interrupt rating
100 kAIC Vdc 300 kAIC at 600 Vac
Response time
10 sec at 500%
Voltage rating
600 Vac, 300 Vdc
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class J
Connection
Bolted blade end x bolted blade end
Fuse indicator
Non-indicating With Indicator
Special features
Non-indicating, High in-rush current motor protection
Bussmann series Class J Low-Peak fuse 70-600A data sheet No. 1007
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Time-delay, dual-element protection reduces nuisance trips while tolerating motor startup surges, improving equipment uptime and drive efficiency in conveyors and pumps. The 125 A, 600 Vac rating plus 300 kAIC interrupt capability protects feeders and motor controllers from high fault currents, lowering the risk of cascading outages in production lines. Bolted blade end connections enable secure, vibration-tolerant installations in panel assemblies and switchgear, while standard packaging simplifies stocking and field replacement. The device’s CE and RoHS compliance supports global deployment and regulatory alignment, with a compact footprint that eases retrofit projects. With non-indicating or indicator options, maintenance teams can verify status quickly without disrupting operation. High in-rush protection for motors helps reduce electrical noise and mechanical wear, extending asset life.
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FAQs
Installation considerations for LPJ-125SPI center on compatibility and mounting. Use bolted blade end x bolted blade end connections for secure, vibration-tolerant installs, and allow clearance for the 5.75 inch length and 1.5 inch width. The standard packaging keeps replacement stock straightforward, and the dual-element design supports predictable performance in motor starter panels and drive enclosures.
LPJ-125SPI uses time-delay, dual-element construction to tolerate motor inrush without sacrificing protection. The current-limiting feature keeps fault currents within safe levels, reducing electrical noise and nuisance tripping. In conveyors, pumps, and fan drives, this translates to smoother startups, fewer mechanical wear events, and improved line efficiency while maintaining rapid clear-out in fault conditions.
LPJ-125SPI carries CE marking and RoHS compliance, aligning with global safety and environmental requirements. While UL listings are not specified here, the design adheres to Class J standards for current-limiting protection, and the 600 Vac rating supports compatibility with common industrial power systems. This helps satisfy regulatory expectations for panel builds and machine safety programs.
Key ratings include 125 A amperage, 600 Vac voltage, and an interrupt rating of 300 kAIC at 600 Vac, plus 100 kAIC at DC. The 10-second response time at 500% overload defines protection against fault conditions without false trips. These specs guide fuse sizing for motor drives, feeders, and distribution panels while meeting safety standards.
With its durable dual-element construction and high interrupt ratings, the LPJ-125SPI reduces nuisance maintenance and unplanned downtime. The reliable protection minimizes arcing and wear on upstream components, while standard packaging simplifies stocking and replacement in service centers. The result is lower total cost of ownership and faster MTTR for critical production lines.