Eaton LPS-RK-500SPI Fuse - Class RK1, 500A, 600Vac
Part Number: LPS-RK-500SPI
Quick Summary
The Eaton LPS-RK-500SPI fuse is a time-delay, current-limiting device designed to protect power distribution circuits in industrial equipment. When protection devices trip prematurely or fail to clear faults, downtime climbs and maintenance costs rise. This time-delay dual-element fuse carries CE marking and supports up to 600 Vac with a 500 A rating and high interrupt capability, making it suitable for demanding powerrails. For panel builders and OEMs, its blade-end connections, indicator options, and electrically isolated end caps streamline installation and service. The device’s Class RK1 classification and 13.38 in length suit compact rack or cabinet layouts while delivering reliable protection in demanding industrial environments. With a 300 kAIC interrupt rating at 600 Vac and clearly defined product data, engineers can spec with confidence, reducing design risk and unplanned outages.
Product Information
Extended Description
LPS-RK-500SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 500 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-500SPI
UPC
051712627467
Product Length/Depth
13.38 in
Product Height
2.88 in
Product Width
2.88 in
Product Weight
5.6 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
500 A
Interrupt rating
100 kAIC at 300 Vdc 300 kAIC at 600 Vac
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
Bussmann Full Line Catalog
Bussmann Full Line Catalog
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 fuse. Business Impact: Mitigates nuisance trips during motor inrush and transient faults, improving equipment uptime and process reliability. Application: Motor drives, pumps, and transformer feeders in manufacturing facilities. Feature: Class RK1 fuse design with blade-end connections. Business Impact: Standardized form factor enables quick swaps and low installation risk, reducing panel downtime during maintenance. Application: Control panels and switchgear assemblies in OEM builds. Feature: High interrupt rating up to 300 kAIC at 600 Vac (and 100 kAIC at 300 Vdc). Business Impact: Superior fault clearance capacity protects feeders and reduces collateral damage during short circuits. Application: Heavy-duty distribution circuits in packaging, processing, and automotive lines. Feature: Indicator option and non-indicating variants with electrically isolated end caps. Business Impact: Clear fault indication or remote sensing compatibility improves serviceability and safety during live-work. Application: Industrial control cabinets, machine enclaves, and retrofit projects. Feature: Standard packaging and blade-end x blade-end connection. Business Impact: Facilitates rapid replacements and scalable inventory management across multiple sites. Application: Fleet protection programs and panel modernization initiatives. This combination of features supports compliance with CE standards while delivering measurable gains in efficiency, safety, and total cost of ownership for industrial electrical protection.
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FAQs
When installing the LPS-RK-500SPI, ensure blade-end x blade-end connections align with the panel’s fuse holders and that the end caps remain electrically isolated if required by the panel design. The 13.38 in length and 2.88 in width/height should fit standard RK1 enclosures, and the optional indicating version can aid fault pinpointing during maintenance. Verify compatibility with 600 Vac circuits and ensure proper seating to avoid arcing or loose connections that could compromise interrupt performance.
Key specs include a 500 A amperage rating, 600 Vac voltage rating, and an interrupt rating of 300 kAIC at 600 Vac (and 100 kAIC at 300 Vdc). These figures translate to robust protection for high-current feeders and motors, enabling fast fault clearance without excessive arcing. The time-delay, dual-element design helps handle motor inrush and short-term overloads, reducing nuisance trips while maintaining strong protective clearance.
Yes. The LPS-RK-500SPI is designed for industrial protection in automation panels, with blade-end connections and RK1-class architecture that fits standard control cabinets. Its 500 A rating and 600 Vac compatibility cover many automation feeders, while the dual-element, time-delay fuse design handles motor inrush and transient faults common in production lines. For retrofit projects, the compact RK1 form factor aids replacement without extensive rewiring.
The LPS-RK-500SPI carries CE marking, indicating compliance with essential safety standards for electrical equipment in the European market. The fuse is categorized under Class RK1 and is designed for high-energy protection applications at 600 Vac. While RoHS and detailed UL listings are not indicated in the data, the CE mark supports regulatory alignment for many industrial environments and informs integration with CE-compliant panels.
The LPS-RK-500SPI supports ROI through reduced downtime from reliable fault clearing, ease of replacement with standard blade-end connections, and optional indicator variants that speed fault diagnostics. The RK1 Class design provides consistent protection across fleets, aiding inventory rationalization and easier maintenance planning. In addition, the 13.38 in length and standard packaging streamline stocking and installation in multi-site facilities.