Eaton LPJ-450SP Fuse - Class J Time-Delay, Dual-Element
Part Number: LPJ-450SP
Quick Summary
LPJ-450SP fuse is Eaton’s Class J time-delay, dual-element protection designed for industrial power circuits. It delivers reliable current-limiting while tolerating startup surges common in motors and conveyors. Engineers often grapple with nuisance trips and equipment damage during inrush events; this device helps balance fast fault clearance with surge tolerance. The fuse is CE-marked and RoHS compliant, supporting global installations, with a bolted blade end connection for secure mounting in standard enclosures. Its 8-inch length and 2.5-inch square footprint simplify panel design, while the durable dual-element construction reduces maintenance and replacement costs over time. Aligning with Class J families, LPJ-450SP offers predictable protection and improved system uptime.
Product Information
Extended Description
LPJ-450SP Eaton: Eaton Bussmann Series Class J fuse, LPJ, time-delay, dual-element current limiting fuse, 450 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-450SP
UPC
051712522854
Product Length/Depth
8 in
Product Height
2.5 in
Product Width
2.5 in
Product Weight
2.65 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
450 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
Special features
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 current-limiting design enables sustained protection during motor start-up, reducing nuisance trips and extending equipment life. In industrial settings, this translates to fewer unplanned stops and lower maintenance costs, especially on conveyor belts and pump assemblies. The high interrupt rating provides robust fault handling, interrupting 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc, safeguarding feeders and drives from catastrophic damage. With a 450 A amperage rating and bolted blade end connections, installation is straightforward in standard panels and motor control centers, minimizing modification needs and project risk. The compact 8 in length and 2.5 in width fit common fuse blocks, enabling clean, reliable installations in crowded enclosures. Compliance with CE and RoHS supports worldwide deployment, while the non-indicating status reduces maintenance overhead; the feature set also supports high inrush motor protection in automation environments.
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FAQs
The LPJ-450SP uses bolted blade end connections, designed for straightforward mounting in standard enclosures and fuse blocks. Its 8 inch length and 2.5 inch width/height fit typical Bussmann-series panel spaces, reducing modification needs and allowing quick replacement in existing circuits.
It is rated for 450 A with a voltage rating of 600 Vac and 300 Vdc. The interrupt ratings are 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc, enabling robust fault interruption. The 10 second response time at 500% overload provides reliable protection during motor inrush.
Yes. The LPJ-450SP is a time-delay, dual-element current-limiting fuse designed to tolerate startup surges while protecting downstream circuitry, making it well suited for motors, conveyors, and pump assemblies in automation lines.
The device is CE marked and RoHS compliant, supporting international use and reducing regulatory compliance concerns across global installations.
Utilizing standard 8 inch length and bolted blade ends accelerates installation and replacement, while the non-indicating design reduces maintenance checks. The device’s high interrupt ratings and 450 A protection help minimize panel space and downtime, delivering lower lifecycle costs in demanding industrial environments.