Eaton LPJ-125SP Fuse - Class J, 125 A, 300 kAIC
Part Number: LPJ-125SP
Quick Summary
The Eaton LPJ-125SP fuse provides time-delay, current-limiting protection for industrial motor and power circuits. This helps prevent nuisance trips during motor start-up while safeguarding wiring and components. The device is CE marked and RoHS compliant, aligning with global regulatory requirements and sustainability goals. With a Class J architecture and dual-element design, it delivers predictable protection characteristics and fast isolation for faults. For installers and procurement teams, the standard bolted blade end connections and non-indicating indicators streamline integration and maintenance, while compatibility with 600 Vac and 300 Vdc systems supports a broad range of industrial applications. This fuse supports operational reliability, reduced downtime, and long-term asset protection.
Product Information
Extended Description
LPJ-125SP Eaton: Eaton Bussmann Series Class J fuse, LPJ, time-delay, dual-element current limiting fuse, 125 A, non-idicating fuse, interrupting rating of 300 kA at 600 Vac and 100 kA at 300 Vdc
Product Name
Eaton Bussmann series LPJ fuse
Catalog Number
LPJ-125SP
UPC
051712523424
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
300 kAIC at 600 Vac 100 kAIC Vdc
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
Special features
Non-indicating, High in-rush current motor protection
Bussmann series Class J Low-Peak fuse 70-600A data sheet No. 1007
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Feature: Time-delay, dual-element current-limiting design. Business Impact: Handles motor inrush and surge conditions without sacrificing fault isolation, reducing nuisance trips and unplanned downtime. Application: Motor starters and power distribution panels in manufacturing lines where heavy start currents are routine. Feature: High interrupt rating of 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc. Business Impact: Enhances system protection for large feeders and high-energy loads, improving safety margins and reducing collateral damage during faults. Application: Large motors, conveyors, and drives in industrial facilities. Feature: Class J non-indicating fuse with dual elements. Business Impact: Predictable protection curve and easy panel integration with standard bolted blade end connections; minimizes maintenance surprises. Application: Control cabinets and switchgear where compact protection is required. Feature: Non-indicating status with high in-rush motor protection. Business Impact: Simplifies panel design and reduces diagnostic time while guarding against motor startup spikes. Application: Starter circuits in machine tools and packaging lines. Feature: CE marking and RoHS compliance. Business Impact: Supports global compliance and sustainability initiatives, facilitating international procurement and approval processes. Application: Global manufacturing operations requiring regulatory alignment. Feature: Broad voltage range 600 Vac / 300 Vdc and 125 A rating. Business Impact: Versatile protection across varied power architectures, enabling one part to cover multiple assets and reducing SKU proliferation. Application: Industrial power distribution and motor control networks.
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FAQs
Install the LPJ-125SP using its bolted blade end connections, ensuring clean, flat mating surfaces and proper torque per panel hardware specs. The dual-element, non-indicating design simplifies replacement and reduces panel clutter. Follow the manufacturer’s installation guidelines and confirm compatibility with your enclosure’s space and bus bar configuration to maintain correct interrupting ratings.
The LPJ-125SP is rated for 125 A with an interrupt rating of 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc. It offers time-delay, dual-element current-limiting protection and a response time of 10 seconds at 500% overload. It is suitable for motor loads and power distribution circuits requiring robust fault isolation.
Yes. The LPJ-125SP features a time-delay, dual-element design that accommodates motor starting inrush without nuisance tripping, while still delivering fast fault isolation. This makes it well-suited for motor control centers and drive applications where high inrush is common.
The LPJ-125SP is CE marked and RoHS compliant, reflecting compliance with European regulatory standards and environmental requirements. It is a Class J fuse, providing predictable protection characteristics. Ensure your installation and wiring meet applicable regional codes for full regulatory alignment.
The LPJ-125SP delivers improved uptime through reduced nuisance trips, robust protection for large feeders, and easy installation with standard bolted blade ends. Its high interrupt rating, compliance features, and broad voltage compatibility help lower maintenance costs, simplify sourcing, and support regulatory and sustainability goals across global operations.