Eaton LPS-RK-4/10SP Fuse - Class RK1 Time-Delay
Part Number: LPS-RK-4/10SP
Quick Summary
The Eaton LPS-RK-4/10SP fuse is a time-delay, current-limiting device designed to protect motor circuits and control feeders in industrial environments. In high-demand panels, nuisance trips and frequent replacement cycles can erode uptime and inflate maintenance costs. This product carries CE marking and is part of the RK1 class family, engineered for reliable performance in demanding electrical protection schemes; Eaton also provides access to RoHS compliance information via its RoHS search tool. With a 0.4 A rating and a 600 Vac interrupt capability (300 kAIC) plus 300 Vdc (100 kAIC), this fuse supports compact installation and selective protection for motor drives, transformers, and panel feeders, delivering consistent protection with predictable operating costs.
Product Information
Extended Description
LPS-RK-4/10SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 0.4 A, non-indicating fuse, interrupting rating of 300 kA at 600 Vac and 100 kA at 300 Vdc
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-4/10SP
UPC
051712548045
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.155 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
0.4 A
Interrupt rating
100 kAIC at 300 Vdc 300 kAIC at 600 Vac
Response time
10 sec at 500%
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Quantity
10
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Low-Peak 600 V LPS Class RK1 time-delay fuses, up to 600 A data sheet no. 1001
Time-delay, dual-element, current-limiting design delivers selective protection during motor start-up. This reduces nuisance trips and protects downstream equipment while allowing brief, intentional overloads without unnecessary shutdowns. Application: motor drives in conveyor lines, pumps, and fans in industrial facilities. High interrupt rating enables fast, reliable clearing of high-energy faults. With 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc, it minimizes downstream damage and shortens downtime after a fault. This supports protection of motors and feeders in heavy-duty lines in packaging, material handling, and process automation. Compact physical form-factor supports easy integration into tight spaces and standard fuse blocks. It occupies 5 in length with 0.81 in width/height and standard packaging for straightforward stocking and field replacement, reducing maintenance time. Non-indicating design reduces panel indicator clutter while Class RK1 provides consistent time-delay protection across the RK1 lineup for reliable protection in control panels. The CE marking and available RoHS compliance data simplify regulatory planning; a 10‑unit packaging quantity supports multi-line protection and spare parts planning for scalable installations.
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FAQs
The LPS-RK-4/10SP is sized for standard Bussmann RK1 fuse holders and common control-panel layouts. At 5 inches in length and 0.81 inches in width, it fits most compact enclosures and can be field-replaced without rewiring. The standard packaging (quantity 10) supports quick stocking and streamlined maintenance in multi-line installations.
This fuse has a 0.4 A amperage rating with an interrupt rating of 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc. The response time is specified as 10 seconds at 500% overload. These values enable selective protection for motors and feeders while tolerating brief inrush events typical in startup conditions.
Yes. The time-delay, dual-element design is well-suited for motor protection in conveyors and pumps, where inrush is common. The RK1 class construction and high interrupt ratings help prevent nuisance trips while ensuring rapid fault clearing, protecting downstream equipment and reducing downtime in process lines and material-handling systems.
The product carries CE marking, aligning with European protection standards. It is part of the RK1 fuse family, which is a recognized standard for time-delay protection. For RoHS compliance, Eaton provides a RoHS information tool; you can use the RoHS Search Tool to verify current compliance status for your region and inventory.
With time-delay coordination and a robust interrupt rating, you reduce unnecessary outages during startup while delivering reliable fault clearance, lowering repair costs and downtime. The non-indicating design simplifies panel layouts, and standard packaging plus a compact form factor minimize replacement time and spare-part inventory, improving overall maintenance efficiency and ROI for motor-protection circuits.