Eaton LPJ-45SPI Fuse, Class J, 600 Vac, 300 kAIC
Part Number: LPJ-45SPI
Quick Summary
Eaton LPJ-45SPI fuse provides time-delay, current-limiting protection for motor circuits. Design teams often struggle with nuisance tripping during motor start-ups and selecting protection that won’t slow equipment. This Class J device is CE marked and RoHS compliant, offering reliable panel protection with a dual-element, time-delay design that handles motor inrush. With ferrule-end connections and a standard packaging format, it integrates quickly into existing control panels. In broad industrial applications, the LPJ-45SPI delivers consistent protection, reduces downtime, and supports compliant, safe operation across low-voltage circuits. This translates to measurable cost savings and easier maintenance over the equipment lifecycle.
Product Information
Extended Description
LPJ-45SPI Eaton: Eaton Bussmann Series Class J fuse, LPJ, time-delay, dual-element current limiting fuse, 45 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPJ fuse
Catalog Number
LPJ-45SPI
UPC
051712626385
Product Length/Depth
2.38 in
Product Height
1 in
Product Width
1 in
Product Weight
0.19 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
45 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 With Indicator
Special features
Non-indicating, High in-rush current motor protection
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
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 provides controlled fault interruption while accommodating brief motor surge. Business Impact: Reduces nuisance trips during start-ups and inrush, protecting production uptime and equipment longevity. Application: Ideal for motor drives, conveyors, pumps, and fans in industrial control panels. Feature: 45 A rating with 600 Vac and 300 kAIC interrupt rating ensures robust protection for high-current faults. Business Impact: Preserves downstream equipment and minimizes costly outages during short-circuit events. Application: Main feeders and motor circuits in manufacturing lines and process equipment. Feature: Class J fuse with ferrule end x ferrule end connections simplifies installation and field replacement. Business Impact: Enables quick, reliable retrofits and consistent panel performance. Application: Fits standard control panels across diverse industrial facilities. Feature: RoHS compliance and CE marking support global regulatory adherence. Business Impact: Facilitates multinational deployments and safer supply chains. Application: Worldwide installations in OEM equipment and service environments. Feature: High inrush current motor protection and optional status indication improve monitoring. Business Impact: Manages startup surges while providing visibility for maintenance and diagnostics. Application: Process automation and heavy-duty motor control where monitoring matters. Feature: Standard packaging and LPJ-series compatibility simplify procurement. Business Impact: Reduces stocking complexity and speeds replacements. Application: Distributor and panel-build workflows requiring reliable, ready-to-install fuses.
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FAQs
To install the LPJ-45SPI, ensure the panel is de-energized and verify ferrule-end compatibility with your fuse holders. Insert the dual-element fuse into the designated ferrule-end clips, align with the vertical orientation, and reseat firmly to establish reliable contact. Verify the circuit is re-energized only after confirming proper seating and clearance. This approach minimizes contact resistance and ensures consistent interruption performance during faults.
LPJ-45SPI provides a 45 A amperage rating, with a 600 Vac voltage rating and a 300 kAIC interrupt rating at 600 Vac, plus 100 kAIC at DC. The device offers a 10-second response time at 500% overload, and it is a dual-element, time-delay, current-limiting fuse designed for motor protection in demanding industrial environments.
Yes. The LPJ-45SPI's time-delay, dual-element construction is explicitly designed to tolerate brief inrush currents typical of motor start-ups, reducing nuisance trips while quickly interrupting faults. This makes it well-suited for motor drives, conveyors, and other load profiles that experience short surges during startup without compromising protection during faults.
LPJ-45SPI is CE marked and RoHS compliant, ensuring adherence to European regulatory standards for electrical protection devices. This compliance supports global deployment, streamlines qualification processes in multinational facilities, and aligns with corporate sustainability and green manufacturing initiatives.
Warranty for this LPJ-45SPI fuse is listed as Not Applicable by the manufacturer. Nevertheless, its Class J, ferrule-end design, and standard packaging provide proven compatibility with existing Bussmann LPJ-series assemblies and common industrial control panels, facilitating straightforward substitutions and consistent performance across replacement cycles.