Eaton LPN-RK-500SP Fuse - Class RK1 Time-Delay
Part Number: LPN-RK-500SP
Quick Summary
LPN-RK-500SP fuse from Eaton Bussmann provides high-current time-delay protection for industrial power circuits. In complex assemblies, nuisance trips and unplanned downtime can drive costly maintenance and production losses. It is CE marked and RoHS compliant, supporting regulatory compliance across global installations, and its Class RK1 designation ensures reliable coordination with upstream protection. Designed with blade-end connections, a dual-element construction, and a 500 A rating, it delivers robust protection that simplifies panel design and reduces total cost of ownership. For motor drives, power distribution, and process equipment, this fuse helps OEMs and integrators improve reliability while minimizing downtime and service costs.
Product Information
Extended Description
LPN-RK-500SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 500 A, non-indicating fuse, interrupting rating of 300 kA at 250 Vac and 100 kA at 125 Vdc
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPN-RK-500SP
UPC
051712538572
Product Length/Depth
10.38 in
Product Height
2.88 in
Product Width
2.88 in
Product Weight
0.03 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
500 A
Interrupt rating
100 kAIC at 250 Vdc 300 kAIC at 250 Vac
Voltage rating
250 Vac, 250 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
Quantity
1
Special features
Electrically isolated end cap
Bussmann series Class J Low-Peak fuse 70-600A data sheet No. 1007
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Time-delay, dual-element construction provides controlled inrush handling while maintaining current limiting, reducing nuisance trips and protecting wiring during startup surges. This leads to faster, safer restarts in motor drives and HVAC equipment, translating to improved line uptime and reduced maintenance costs. A high interrupt rating of up to 300 kAIC at 250 VAC and 100 kAIC at 250 VDC ensures transformer and bus bars stay protected during fault events, limiting damage and simplifying downstream wiring design. Class RK1 coordination supports selective protection schemes, enhancing system reliability and enabling more predictable fault isolation in complex power circuits. The blade-end x blade-end connection with electrically isolated end caps offers straightforward installation in standard RK1 fuseholders, reducing retrofit time and enabling quick replacement in service contracts. Compact form factor with a 10.38 in depth and 2.88 in width/height fits tight panels without compromising protective performance, supporting compact industrial control panels and machine enclosures. RoHS compliance and CE marking demonstrate adherence to environmental and safety standards, while the non-indicating fuse design minimizes visual distraction in crowded switchgear bays. Overall, the LPN-RK-500SP delivers a proven protection solution for high-current applications, delivering measurable ROI through reduced downtime and extended equipment life.
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FAQs
The LPN-RK-500SP uses a blade end x blade end connection and features an electrically isolated end cap, designed for standard Bussmann Class RK1 fuseholders. This simplifies retrofits and new panel builds, reduces installation time, and ensures secure electrical contact in crowded enclosures. It is suitable for common RK1 mounting footprints used in industrial panels.
This fuse is rated for 500 A with a voltage rating of 250 VAC and 250 VDC. It provides a dual-element, time-delay protection with an interrupt rating of 300 kAIC at 250 VAC and 100 kAIC at 250 VDC, enabling safe dissipation of fault currents and protection of conductors and equipment during short-circuit events.
Ideal for motor drives, power distribution panels, and process equipment where inrush currents are common, the time-delay design minimizes nuisance trips while maintaining fast fault interruption. Its high current rating, robust interrupt capability, and compact form factor support reliable protection in compact control panels and machine enclosures.
The LPN-RK-500SP is CE marked and RoHS compliant, aligning with European safety and environmental requirements. Its RK1 classification supports industry-standard protection coordination, and the device is Non-indicating, as specified, which helps with clear visual diagnostics in dense switchgear environments.
By reducing nuisance trips and enabling precise protection, the fuse lowers unplanned downtime and minimizes equipment damage. The dual-element, time-delay design accommodates inrush, while the high interrupt rating protects wiring during faults. Combined with easy installation and reliable vendor support, users typically see improved uptime and lower lifecycle costs in high-current applications.