Eaton LPN-RK-1-4/10SP fuse - Class RK1 time-delay, dual-element
Part Number: LPN-RK-1-4/10SP
Quick Summary
Eaton LPN-RK-1-4/10SP fuse provides time-delay protection for motors and load circuits in industrial controls. This design helps prevent nuisance trips and unplanned downtime by tolerating inrush currents while guarding wiring and equipment. It carries CE marking for European safety compliance and follows the RK1 Class fuse standard, supporting reliable performance in demanding environments. The compact 2 in length and dual-element construction simplify procurement and installation in control panels, reducing panel space and inventory requirements. With a 1.40 A rating and a 300 kAIC interrupt capacity, it delivers targeted protection for motor circuits while enabling easy integration with standard fuse holders. In short, this fuse supports reliable, cost-efficient motor protection in industrial automation.
Product Information
Extended Description
LPN-RK-1-4/10SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 1.40 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-1-4/10SP
UPC
051712538114
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.5 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
1.40A
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
Non-indicating, High in-rush current motor protection
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Low-Peak 250 V LPN Class RK1 time-delay fuses,1/10-60 A data sheet no. 1003
Time-delay, dual-element design provides controlled response to inrush currents while delivering current-limiting protection, reducing arc flash risk and extending motor life. Business impact: lower maintenance costs and fewer unplanned downtimes in conveyors, pumps, and fans. Application: ideal for motor control centers and automation panels where high inrush occurs without sacrificing short-circuit protection. High interrupt rating of 300 kAIC at 250 VAC (and 100 kAIC at 125 VDC) ensures robust clearance of faults in demanding electrical environments, improving equipment reliability and system availability. Dual-element construction complements non-indicating operation, minimizing nuisance nuisance indicator events while preserving clear fault signaling for technicians. Compact 2 in length with 0.56 in width fits standard fuse holders and standard panel layouts, enabling rapid upgrades or replacements without modifying enclosures. Special features include non-indicating operation and strong motor-protection performance during startup surges, supporting safer, more efficient plant operation. The part is CE marked and listed for general industrial use, supporting compliant procurement and streamlined sourcing for maintenance teams. Proven performance in HVAC, packaging, and material-handling applications helps justify ROI through longer service life and reduced downtime.
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FAQs
Power down the equipment and verify compatibility with a standard 2 in fuse holder. Use the correct current rating of 1.40 A and ensure the holder supports dual-element RK1 fuses. Insert the fuse fully into the holder, then re-energize and verify normal operation. Maintain clear labeling and verify the circuit protects the intended motor load.
Key specs include an amperage rating of 1.40 A, voltage rating of 250 VAC / 125 VDC, and an interrupt rating of 300 kAIC at 250 VAC (100 kAIC at 125 VDC). It is a time-delay, dual-element fuse with a 8 second response time at 500% overcurrent, designed for high inrush motor protection.
Yes. The LPN-RK-1-4/10SP is a time-delay, dual-element RK1 fuse designed for high inrush motor protection. Its 8-second response at 500% and 300 kAIC interrupt rating allow it to handle startup surges while still delivering fast fault clearance, reducing organisk downtime and protecting wiring and equipment.
The fuse is CE marked, reflecting European safety compliance. It is classified as Class RK1 and features a dual-element, time-delay design, which aligns with common industry standards for motor protection in control panels and industrial automation environments.
With non-indicating operation and standard 2 inch length, maintenance involves periodic panel checks and replacement on a planned basis rather than reacting to indicator failures. Its robust interrupt rating and dual-element design minimize nuisance trips, lowering downtime costs and inventory needs for spare fuses in motor-driven lines.