Eaton LPJ-3-1/2SP Fuse - Class J, 600 Vac 300 kAIC
Part Number: LPJ-3-1/2SP
Quick Summary
Eaton LPJ-3-1/2SP fuse provides precise time-delay current-limiting protection for motors and drives across industrial automation applications. In practice, timing accuracy is critical to avoiding nuisance trips during motor start-up and high inrush events that disrupt production. The device carries CE marking and RoHS compliance, with Class J architecture and dual-element design delivering a robust 300 kAIC interrupt rating at 600 Vac and 100 kAIC at 300 Vdc. Non-indicating by design, it reduces visual clutter while maintaining reliable protection in control panels. Engineered for OEMs and end users alike, it supports motor protection strategies, minimizes downtime, and aligns with modern compliance requirements for industrial electrical protection.
Product Information
Extended Description
LPJ-3-1/2SP Eaton: Eaton Bussmann Series Class J fuse, LPJ, time-delay, dual-element current limiting fuse, 3.5 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-3-1/2SP
UPC
051712522779
EAN
5027590447119
Product Length/Depth
0.81 in
Product Height
2.25 in
Product Width
0.81 in
Product Weight
0.19 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
3.5 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
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Special features
Non-indicating, High in-rush current motor protection
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series LPJ Low-Peak 1-60A data sheet No. 1006
Feature: Time-delay, dual-element current-limiting design. Business Impact: Improves reliability by tolerating motor inrush while still delivering fast fault isolation, reducing unplanned downtime and wear on contacts. Application: Motor starters and drives in conveyors, pumps, and CNC equipment where startup spikes occur. Feature: Class J, non-indicating fuse. Business Impact: Simplifies panel layouts and stocking by using a standardized form factor while indicating faults through downstream control logic. Application: Control panels in packaging lines and process automation. Feature: High interrupt rating of 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc. Business Impact: Provides robust protection for high-energy faults, safeguarding feeders and switchgear in distribution panels. Application: Main feeders to motor control centers and machine tools. Feature: 3.5 A nominal rating with 600 Vac / 300 Vdc ratings. Business Impact: Delivers precise protection for small- to medium-load motors and circuits, optimizing protection without nuisance trips. Application: Control circuits for pumps, fans, and automation drives. Feature: Ferrule end x ferrule end connections. Business Impact: Enables quick, reliable installation with common fuse blocks, reducing commissioning time. Application: OEM panel builds and retrofit projects. Feature: RoHS compliance and CE Marking. Business Impact: Ensures regulatory alignment and safe material composition for global deployments. Application: OEM automotive, industrial machinery, and process equipment. Feature: Special features for high in-rush motor protection. Business Impact: Supports safer motor starts and reduced arc energy, extending equipment life. Application: Start-up sequences in heavy-duty conveyors and robotics joints.
Get a Quick Quote for a Eaton LPJ-3-1/2SP
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 LPJ-3-1/2SP?
Enquire Now
FAQs
LPJ-3-1/2SP is ideal for motor control centers, drives, and automation panels in manufacturing environments. Its 600 Vac rating supports typical industrial power networks, while the 3.5 A rating makes it suitable for small to mid-size motors and control circuits. The dual-element design handles motor inrush without compromising protection, minimizing downtime during commissioning and routine maintenance.
Yes. The LPJ-3-1/2SP fuse is a time-delay, current-limiting device with a 10 second response at 500% inrush, allowing it to tolerate start-up surges common with motors and conveyors. This helps prevent nuisance trips while still delivering rapid fault isolation in the event of a short circuit.
This fuse carries CE marking and RoHS compliance, indicating conformity with European regulatory standards and restricted hazardous substances. It also uses a Class J design with dual-element protection, enhancing safety and reliability in industrial equipment. For procurement, these certifications support compliance documentation and enable smoother integration into global electrical cabinets.
The dual-element design combines time-delay characteristics with current-limiting protection, enabling the fuse to ride through temporary overloads while quickly interrupting sustained faults. This reduces arc energy during faults, improves equipment longevity, and minimizes disruptive de-energization of connected motors and drives during fault events.
LPJ-3-1/2SP is non-indicating, so visual fault indication isn’t available. Plan for proactive stock and replacement during preventive maintenance, and verify panel compatibility with ferrule-end terminations for rapid swap-outs. Consult the Bussmann LPJ data sheet for replacement ratings and to confirm compatibility with your specific fuse holders and control schemes.