Eaton LPJ-250SPI Fuse - Class J, 300 kAIC
Part Number: LPJ-250SPI
Quick Summary
The Eaton LPJ-250SPI fuse protects motor circuits with time-delay current-limiting in industrial controls. Engineers often battle nuisance trips during motor startup, leading to unplanned downtime and maintenance costs. CE marked and RoHS compliant, this Class J dual-element device is rated for 600 Vac and 300 kAIC, balancing safety and reliability. By combining robust protection with straightforward installation and lifecycle management, it supports efficient, compliant power distribution in automation panels and drives.
Product Information
Extended Description
LPJ-250SPI Eaton: Eaton Bussmann Series Class J fuse, LPJ, time-delay, dual-element current limiting fuse, 250 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPJ fuse
Catalog Number
LPJ-250SPI
UPC
051712626422
EAN
5027590253079
Product Length/Depth
4.63 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
1.5 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
250 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 With Indicator
Special features
Non-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 protects motors during startups and short circuits while allowing safe, continuous operation, reducing downtime and maintenance costs in automated lines. This design translates to improved fault clearance and minimized arc energy, benefiting drives and feeders in industrial environments. The LPJ-250SPI features 250 A rating, 600 Vac voltage, and 300 kAIC interrupt capability, enabling reliable protection against high fault currents in power distribution panels and motor control centers. Bolted blade end connections simplify installation and ensure secure wiring, reducing field wiring errors and service time during panel upgrades. Availability with an indicator option provides fuse-status visibility, supporting proactive maintenance and rapid fault diagnosis. CE and RoHS compliance, along with Class J compatibility, help meet regulatory requirements while maintaining system reliability for industrial automation.
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FAQs
LPJ-250SPI uses bolted blade end x bolted blade end connections, a standard configuration for Bussmann Class J fuses. This enables straightforward, secure mounting in common switchgear and motor control centers. When selecting conductors and bus bars, confirm blade dimensions match the panel design and verify torque specifications to maintain nesting integrity and fault-clearing performance during routine maintenance.
Core specs include a 250 A amperage rating, 600 Vac voltage rating, and a 300 kAIC interrupting rating at 600 Vac. It features time-delay dual-element current-limiting behavior with a 10 second response benchmark at 500% overload. These figures translate to reliable protection for motors and drives while tolerating inrush currents common in industrial starts.
Yes. The LPJ-250SPI is designed for high inrush current motor protection with its dual-element current-limiting construction and time-delay characteristics. This combination reduces nuisance tripping during startup and provides fast fault clearing, helping maintain production continuity in manufacturing lines and material handling applications.
LPJ-250SPI is CE marked and RoHS compliant, aligning with European safety and environmental requirements. While the fuse’s Class J designation ensures industry-standard performance, always verify local regulatory mandates for motor protection and electrical safety to ensure full compliance in your facility.
Implementing the LPJ-250SPI can reduce downtime from nuisance trips, shorten maintenance windows with easier bolted-end installations, and simplify spare-part inventory through a standard Bussmann Class J family. The result is lower total cost of ownership, better uptime for motors and drives, and clearer fault diagnostics due to visible status options.