Eaton LPS-RK-6SP Fuse - Class RK1, 600 Vac, 300 Vdc
Part Number: LPS-RK-6SP
Quick Summary
The LPS-RK-6SP fuse is a time-delay protection device tailored for industrial controls and motor circuits. It helps prevent nuisance outages during startup while guarding critical equipment from short circuits. CE marking confirms European safety compliance and Class RK1 framing provides predictable, coordinated protection in multi-fuse layouts. The compact ferrule-end design supports quick, reliable installations and safe servicing, even in dense control panels. By combining a dual-element, current-limiting architecture with a clear, non-indicating indicator, this fuse delivers both protection and ease of maintenance for modern automation environments.
Product Information
Extended Description
LPS-RK-6SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 6 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-6SP
UPC
051712548250
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
1.6 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
6 A
Interrupt rating
100 kAIC at 300 Vdc 300 kAIC at 600 Vac
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
Time-delay, dual-element design provides controlled inrush handling, reducing nuisance trips and equipment wear. This directly improves line uptime and extends motor life in heavy-start applications such as conveyors and pumps. Application: suitable for industrial control panels, machine tools, and automation racks where startup surges are common. Current-limiting action limits fault currents, protecting downstream components and simplifying coordination with upstream protection devices. The business impact is lower wear on cables, reduced arc flash exposure, and easier selectivity planning in multi-fuse assemblies. Application: transformer-fed circuits and power distribution blocks in manufacturing lines. Class RK1 compatibility and 600 Vac / 300 Vdc ratings ensure broad electrical compatibility; ferrule-end connections enable quick, reliable installation. Result: faster panel wiring, fewer field errors, and safer maintenance with electrically isolated end caps. Application: retrofit projects and new builds in control cabinets and machine centers. The compact form factor (5 in length, 0.81 in width/height) and 1.6 lb weight fit tight spaces without sacrificing interrupting capability (up to 300 kAIC at 600 Vac). This supports cost-effective upgrades and scalable protection for larger automation architectures.
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FAQs
The LPS-RK-6SP uses ferrule-end x ferrule-end connections. Use appropriately crimped ferrules sized for the conductor and ensure full contact in each end cap to maintain a secure, compliant connection. Verify panel wiring channels allow straight insertion and avoid bending the leads to prevent gaps that could compromise protection.
The time-delay feature allows short startup surges to pass without nuisance tripping, while the dual-element construction provides reliable interrupting capability. This improves selective coordination with upstream breakers or fuses, reducing unnecessary outages in motor drives and transformer-fed circuits while preserving rapid fault clearing when needed.
Yes. The fuse is rated for 600 Vac and 300 Vdc, with a high interrupt rating of 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc, making it suitable for mixed-voltage panels common in modern automation lines and machine tools.
This fuse is CE marked and uses electrically isolated end caps to improve handling safety. The non-indicating design reduces visual clutter in dense panels, but health checks and test procedures should still accompany routine maintenance to confirm fuse status and ensure correct replacement with the LPS-RK-6SP model.
By reducing nuisance trips and enabling selective protection, the LPS-RK-6SP minimizes unplanned downtime and equipment wear, lowering maintenance costs and extending the life of motors and drives. Its compact form factor also speeds panel assembly, contributing to faster time-to-market for new machines.