Eaton LPJ-40SPI Fuse - Class J, 300 kA at 600 Vac
Part Number: LPJ-40SPI
Quick Summary
Eaton LPJ-40SPI fuse provides time-delay protection for motor circuits in industrial equipment. Engineers frequently contend with nuisance trips during motor starts caused by inrush currents. The device carries CE marking and RoHS compliance, uses a Class J design, and delivers a 300 kAIC interrupt rating at 600 Vac. Its ferrule-end connections and compact form simplify panel wiring and space planning, while meeting demanding protection standards. Used in motors, drives, and pumps, it offers reliable electrical protection with improved uptime and lower maintenance costs.
Product Information
Extended Description
LPJ-40SPI Eaton: Eaton Bussmann Series Class J fuse, LPJ, time-delay, dual-element current limiting fuse, 40 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPJ fuse
Catalog Number
LPJ-40SPI
UPC
051712626378
EAN
5027590245333
Product Length/Depth
2.36 in
Product Height
1.6 in
Product Width
1.6 in
Product Weight
0.105 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
40 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
Ferrule end x ferrule end
Fuse indicator
Non-indicating With Indicator
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 LPJ fuse. Benefit: Enables controlled handling of inrush while protecting downstream wiring, reducing downtime and maintenance costs. Application: Motor starters and drive circuits where surge tolerance is critical. Feature: High interrupt rating of 300 kAIC at 600 Vac. Benefit: Safe interruption of large fault currents, safeguarding downstream components and improving system reliability. Application: Manufacturing lines and heavy-duty machinery with potential high short-circuit currents. Feature: Ferrule end x ferrule end connections. Benefit: Easy, secure installation with compatible wiring hardware for rapid panel upgrades. Application: Retrofit projects and new panel builds in control cabinets. Feature: Class J, time-delay, dual-element design. Benefit: Selective coordination with motors and feeders, minimizing unwanted trips during startup. Application: Industrial motors, pumps, and conveyors in demanding environments. Feature: Compact size (2.36 in x 1.6 in x 1.6 in) and weight (0.105 lb). Benefit: Space-efficient protection in tight control panels, enabling denser layouts. Application: Small to mid-size control panels requiring reliable protection without footprint penalty.
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FAQs
LPJ-40SPI utilizes ferrule-end terminals for straightforward wiring in standard Bussmann LPJ configurations. Ensure correct ferrule sizing, secure torque on the end caps, and proper clearance for heat dissipation. This time-delay, dual-element fuse is suited for motor drives and panels where space is constrained, supporting quick retrofits and reliable protection without disruptive downtime.
The LPJ-40SPI offers 300 kAIC interrupt rating at 600 Vac (with 100 kAIC at DC), enabling safe interruption of high-m fault currents. This matters for protecting downstream equipment such as motor starters, drives, and feeders from catastrophic fault currents, reducing damage and extending equipment life while maintaining system safety.
Yes. The LPJ-40SPI is a time-delay, dual-element current-limiting fuse designed to tolerate motor inrush without nuisance trips. Its 40 A rating, 600 Vac capacity, and 10-second response profile at 500% inrush ensure reliable motor protection during startup while preserving circuit integrity and uptime.
The LPJ-40SPI is CE marked and RoHS compliant, aligning with European and environmental standards. These certifications support regulatory compliance in many industrial facilities, enabling safer integration into compliant electrical protection schemes and easing procurement for regulated environments.
The fuse measures 2.36 inches in length, with 1.6 inch width and height, and weighs 0.105 pounds. It uses ferrule-end connections on both sides, facilitating compatible, secure mounting in standard control panels and reducing installation complexity during replacements or upgrades.