Eaton LPS-RK-7SP fuse - Class RK1
Part Number: LPS-RK-7SP
Quick Summary
Eaton LPS-RK-7SP fuse provides time-delay protection for electrical circuits in industrial power systems. This design helps prevent nuisance trips from normal inrush currents in motors, drives, and control panels. It carries CE marking and RoHS compliance, with Class RK1 designation to simplify sourcing and replacement in standard Bussmann RK1 assemblies. The fuse ships in a standard packaging format and features ferrule-end connections for quick, secure installations. By combining reliability with a compact form factor, it delivers predictable protection in crowded panels and evolving automation environments while supporting cost-effective maintenance and stocking.
Product Information
Extended Description
LPS-RK-7SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 7 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-7SP
UPC
051712548274
EAN
5027590173070
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.17 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
7 A
Interrupt rating
300 kAIC at 600 Vac 100 kAIC at 300 Vdc
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 RK1
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Quantity
10
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, up to 600 A data sheet no. 1001
The LPS-RK-7SP fuse is a time-delay, dual-element, current-limiting device that provides robust protection for essential loads. This feature translates to improved equipment longevity and reduced downtime, particularly in motor control and drive applications where inrush currents are common. Its 7 A rating and a high interrupt rating enable safe, rapid fault clearing without compromising normal operation, delivering measurable efficiency gains in power distribution and machine safety. Electrically isolated end caps simplify maintenance tasks and reduce the risk of arcing during replacement, while ferrule-end x ferrule-end connections support rapid, secure installations in standard RK1 holders. The non-indicating design minimizes visual clutter in dense panels, and the compact 5 inch length with standard packaging streamlines inventory management. This fuse is well suited for panel upgrades and new builds requiring reliable, known-class protection.
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FAQs
The LPS-RK-7SP is a time-delay, current-limiting RK1 class fuse designed with ferrule-end connections, making it compatible with standard RK1 fuse blocks and Bussmann RK1 assemblies. Its 5 inch length and 0.81 inch square cross-section align with common panel infrastructure, and the standard packaging of ten units aids stocking and quick replacement in evolving automation systems.
This fuse is ideal for motor control centers, drives, and power distribution panels where startup surges occur. Its time-delay characteristic tolerates brief inrush currents without nuisance trips, while maintaining reliable protection against faults. Use it in automation cabinets, feeders, and control circuits that require predictable interruption and space-efficient, easy-to-replace protection.
Key ratings include a 7 A amperage, 600 Vac and 300 Vdc voltage rating, and a 300 kAIC interrupt rating at 600 Vac with 100 kAIC at 300 Vdc. The 10-second response time at 500% reflects a balance between rapid fault clearance and tolerance for inrush, supporting reliable protection in high-energy industrial environments.
The LPS-RK-7SP carries CE marking and RoHS compliance, aligning with European safety requirements and restricted substance limits. Its Class RK1 designation simplifies cataloging and stocking for RK1-specific applications, while the ferrule-end design and non-indicating indicator support safer maintenance and cleaner panel layouts.
The fuse is non-indicating, so visual trip indicators are not available; plan replacement based on fault events and routine maintenance schedules. Electrically isolated end caps reduce maintenance risk during replacement, and ferrule-end connections enable quick, secure swaps in standard RK1 holders, minimizing downtime during upgrades or repairs.