Eaton LPN-RK-5-6/10SP Fuse - RK1 Time-Delay, 300 kAIC
Part Number: LPN-RK-5-6/10SP
Quick Summary
The Eaton LPN-RK-5-6/10SP fuse protects electrical circuits in control panels and motor drives. Nuisance trips from inrush currents and poor selective coordination can erode uptime; this fuse mitigates that with time-delay behavior. It is CE marked and classified as RK1, with a dual-element, current-limiting design that tolerates startup surges while delivering fast fault interruption. Compatible with standard Bussmann RK1 holders, it enables compact installations and straightforward replacements in dense panel layouts, supporting reliable power distribution and preventative maintenance in industrial automation environments.
Product Information
Extended Description
LPN-RK-5-6/10SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 5.60 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-5-6/10SP
UPC
051712538244
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.05 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
5.60A
Interrupt rating
300 kAIC at 250 Vac 100 kAIC at 125 Vdc
Response time
8 sec at 500%
Voltage rating
250 Vac, 125 Vdc
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Quantity
10
Special features
Electrically isolated end cap
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Bussmann series Fuseology
Bussmann series Low-Peak 250 V LPN Class RK1 time-delay fuses,1/10-60 A data sheet no. 1003
Feature: Time-delay, dual-element, current-limiting design provides controlled response to motor inrush while limiting fault current. Business Impact: Reduces nuisance trips and improves coordination, boosting machine uptime and protecting power distribution without sacrificing safety. Application: Ideal for motor starters, conveyors, and drive circuits in automation equipment. Feature: High interrupt rating of 300 kAIC at 250 Vac and 100 kAIC at 125 Vdc. Business Impact: Enhanced fault tolerance in high-energy panels, minimizing damage and maintenance costs after a short-circuit event. Application: Protective in switchgear and high-current racks in industrial facilities. Feature: Voltage rating 250 Vac / 125 Vdc and a compact 2 in length with 0.56 in square cross-section. Business Impact: Space-saving fit in dense control panels while covering both AC and DC circuits. Application: Panel shrouds, power supplies, and DC bus protection. Feature: RK1 class, non-indicating fuse with electrically isolated end caps. Business Impact: Safer handling during service and easier replacement in crowded enclosures, reducing human error. Application: Standard RK1 fuse holders and modular panels for reliable maintenance. Feature: Standard packaging and 10-count quantity with robust Bussmann lineage. Business Impact: Simplified stocking, faster maintenance cycles, and reduced downtime for routine replacements. Application: OEMs and maintenance teams stocking for replacement cycles. Feature: Time-delay performance with a 8 sec response at 500% overcurrent. Business Impact: Better tolerance for startup surges and reduced nuisance trips, enabling smoother equipment start-ups. Application: Industrial drives, pumps, and machinery with periodic inrush demands.
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FAQs
To install, ensure the fuse holder is an RK1 compatible base. Power down the equipment, remove the access cover, and seat the 2 in long, dual-element fuse firmly into the holder. Re-seat the end caps to ensure electrical isolation, then replace the cover. The electrically isolated end caps simplify replacement and reduce the risk of arcing during maintenance.
The fuse provides 300 kAIC interrupt rating at 250 Vac and 100 kAIC at 125 Vdc, with a voltage rating of 250 Vac / 125 Vdc. The amperage rating is 5.60 A, and it uses a dual-element, current-limiting design suitable for both AC and DC circuits in protected panels.
Yes. The time-delay, dual-element RK1 fuse is well-suited for motor protection in control panels where inrush currents occur. The 5.60 A rating and 8-second response at 500% overcurrent support reliable motor starting while providing fast fault interruption to protect wiring and drives.
The LPN-RK-5-6/10SP is CE marked and belongs to the Class RK1 family of Bussmann fuses. These certifications confirm compliance with European standards for electrical protection components, while the RK1 classification indicates its intended use in compact, modular protective circuits.
The fuse is non-indicating with electrically isolated end caps, which simplifies safe replacement and reduces maintenance time in crowded panels. Its compact 2 in body and standard RK1 form factor allow quick swaps in existing installations, helping to minimize downtime and improve overall equipment availability in industrial facilities.