Eaton LPS-RK-250SPI Fuse - Class RK1, CE Marked
Part Number: LPS-RK-250SPI
Quick Summary
Eaton LPS-RK-250SPI fuse provides reliable circuit protection for industrial control panels and motor drives. Engineers often contend with nuisance trips and downtime when selecting fuses for high inrush loads, which can bottleneck production and extend maintenance cycles. This part carries CE marking and Class RK1 classification, featuring time-delay, dual-element protection designed for demanding power circuits. By combining a blade-end connection with an indicating option, it streamlines installation, improves maintenance efficiency, and supports compliance in modern industrial networks while delivering robust protection for high-current applications.
Product Information
Extended Description
LPS-RK-250SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 250 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-250SPI
UPC
051712626989
Product Length/Depth
11.63 in
Product Height
2.36 in
Product Width
2.36 in
Product Weight
4.6 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
250 A
Interrupt rating
300 kAIC at 600 Vac 100 kAIC at 300 Vdc
Voltage rating
600 Vac, 300 Vdc
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class RK1
Connection
Blade end x blade end
Fuse indicator
Non-indicating With Indicator
Quantity
1
Special features
Electrically isolated end cap
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, 70-600 A data sheet no. 1002
Feature: Time-delay dual-element, current-limiting design. Benefit: Handles motor inrush and short surges without nuisance trips, reducing unplanned outages and extending equipment life. Application: Motor drives and power distribution panels benefit from reliable start-up protection in industrial settings, enhancing uptime and safety. Feature: 250 A amperage rating with 300 kAIC interrupt rating at 600 Vac. Benefit: Fast, safe fault clearing in high-current circuits, protecting downstream components and wiring from damage. Application: Large motors, conveyors, and HVAC systems in process plants. Feature: 600 Vac / 300 Vdc voltage rating. Benefit: Wide compatibility across AC and DC power circuits, simplifying stock and procurement. Application: Control cabinets and AC/DC distribution enclosures. Feature: Class RK1, blade end x blade end connections. Benefit: Interchangeable with standard Bussmann RK1 fuses, enabling straightforward retrofits and quick replacements. Application: Electrical protection schemes in new builds and refurbishments. Feature: Electrically isolated end caps with indicating option. Benefit: Safer handling and easier fault indication during maintenance, minimizing panel contamination. Application: Industrial control panels and panel-mount assemblies that require clear fuse status. Secondary keywords integrated: LPS-RK fuse, class RK1 time-delay fuse, blade end fuse, current-limiting fuse, CE marked protection, motor drive protection, high inrush protection, industrial control panels, indicating fuse, electrically isolated end cap.
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FAQs
The LPS-RK-250SPI uses blade-end connections designed for standard RK1 fuse holders. Align the dual-element fuse with the mounting slots, push firmly until seated, and verify contact integrity. This design supports quick swaps during PM cycles and minimizes assembly time on control panels while ensuring a secure, code-compliant connection.
The fuse is rated for 250 A with an interrupt rating of 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc. It provides time-delay protection, allowing normal inrush currents typical of motors while still interrupting faults quickly to protect wiring and downstream devices. This makes it suitable for high-current motor protection in industrial applications.
Yes. Its time-delay, dual-element design handles motor inrush, while the 600 Vac rating and 250 A capacity align with common motor starter and drive protections. The blade-end RK1 compatibility also simplifies panel integration and future replacements, reducing downtime and maintenance complexity in motor control applications.
The LPS-RK-250SPI is CE marked, indicating compliance with European safety standards. The product is documented in Eaton’s RoHS resources for restricted substances compliance, and it aligns with Class RK1 fuse standards. Always verify the latest datasheet for confirmation on certifications relevant to your region and project requirements.
By offering reliable fault clearing with a high interrupt rating and a time-delay profile, the LPS-RK-250SPI reduces nuisance trips during motor start-up, lowers unplanned downtime, and extends equipment life. The indicating option and electrically isolated end caps simplify maintenance inspections and safety, delivering lower lifecycle costs and improved uptime for industrial processes.