Eaton LPJ-90SP Fuse - Class J Time-Delay Current-Limiting
Part Number: LPJ-90SP
Quick Summary
Eaton LPJ-90SP fuse provides reliable Class J time-delay protection for motors and controls. Engineers frequently face nuisance trips and downtime; this dual-element design minimizes that risk while preserving fault interruption. RoHS compliant and CE marked support regulatory compliance and sustainability goals. Designed for motor control panels and power distribution, it offers compact installation and predictable performance. For procurement teams, this translates to longer service intervals, lower total cost of ownership, and traceable compliance. With a 90 A amperage rating, 600 Vac / 300 Vdc capability, and a 300 kAIC interrupt rating at 600 Vac, it safely protects equipment during fault and inrush conditions. The device uses bolted blade ends for secure installation in standard electrical protection gear and integrates easily into existing Bussmann Class J fuse stocks.
Product Information
Extended Description
LPJ-90SP Eaton: Eaton Bussmann Series Class J fuse, LPJ, time-delay, dual-element current limiting fuse, 90 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-90SP
UPC
051712523394
Product Length/Depth
4.63 in
Product Height
1.13 in
Product Width
1.13 in
Product Weight
0.3 lb
Warranty
Not Applicable
Compliances
RoHS Compliant CE Marked
Amperage Rating
90 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
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
Feature: Time-delay, dual-element construction. This combination delivers current limiting during fault conditions while accommodating transient inrush, reducing nuisance trips and guarding equipment from high-energy faults. Application: ideal for motor control centers, conveyors, and pumps where startup surges are common and uptime matters. Business impact: improved equipment availability and reduced maintenance costs. Feature: 90 A amperage rating and 600 Vac / 300 Vdc voltage ratings. This provides robust protection for standard industrial power rails and compatibility with common motor starters. Application: feeds and feeders in manufacturing lines and machine decks. Business impact: safer, more predictable protection with easier panel integration. Feature: High interrupt rating—300 kAIC at 600 Vac and 100 kAIC at 300 Vdc. Application: heavy-duty drives and power distribution panels. Business impact: rapid fault clearance and minimized fault propagation. Feature: Non-indicating, bolted blade-end design with compact dimensions. Application: space-constrained installations and retrofits in control panels. Business impact: easier installation, reduced panel footprint, and straightforward stock management. Feature: RoHS compliant, CE marked. Application: global procurement in regulated industries. Business impact: regulatory compliance, sustainability alignment, and lower compliance risk.
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FAQs
LPJ-90SP is designed for bolted blade end connections in compatible Class J fuse holders. To install, power down the equipment, insert the fuse ends into the holder, and secure the bolts per the equipment’s torque specification. Verify a proper mechanical fit and electrical clearance, then re-energize to test for proper operation.
Key electrical specs include 90 A amperage rating, 600 Vac and 300 Vdc voltage ratings, and an interrupt rating of 300 kAIC at 600 Vac with 100 kAIC at 300 Vdc. It also features a time-delay, dual-element design with non-indicating status and 4.63 in length. This makes it suitable for motor drives, conveyors, and other high-inrush loads.
Yes. The LPJ-90SP is RoHS compliant and CE marked, aligning with environmental, safety, and regulatory requirements. This certification supports procurement in regions with strict compliance standards and helps ensure downstream traceability and sustainability across the supply chain. RoHS and CE compliance reduce risk in regulated industries such as machinery, automotive, and energy sectors.
LPJ-90SP is well suited for motor protection in industrial equipment such as drives, pumps, and conveyors. The time-delay design tolerates motor inrush while the current-limiting feature minimizes fault energy. It integrates with bolted blade-end connections for reliable, field-installable protection in control panels and power distribution arrangements. This helps maintenance teams reduce downtime and simplify stocking in standard fuses inventories.
LPJ-90SP measures 4.63 inches in length, 1.13 inches in width, and 1.13 inches in height, with a weight around 0.3 pounds. It uses bolted blade-end connections and standard packaging. This compact form factor facilitates installation in tight enclosures and aligns with Class J fuse catalogs. The specifications support straightforward field replacement and spare part planning.