Eaton LPN-RK-1-8/10SP fuse - Class RK1, 300 kAIC
Part Number: LPN-RK-1-8/10SP
Quick Summary
The Eaton LPN-RK-1-8/10SP fuse is a time-delay protection device that shields motor control and general electrical circuits. Inrush from motors and compressors can cause nuisance trips, but this RK1 fuse tolerates brief surges while maintaining robust protection. CE marking confirms European compliance, while Class RK1, time-delay, and dual-element design deliver predictable protection for low-voltage applications. With its compact 2 in length and non-indicating indicator, installation is straightforward in tight panels, reducing downtime during maintenance and upgrades. For engineers and procurement teams, this fuse offers reliable motor protection, dependable electrical protection, and a clear path to compliant, cost-effective protection across diverse industrial environments.
Product Information
Extended Description
LPN-RK-1-8/10SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 1.8 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-1-8/10SP
UPC
051712538138
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
1.8A
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
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
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
Feature: Time-delay, dual-element design reduces nuisance trips during motor start-ups and inrush events. Business Impact: Higher equipment uptime and fewer unnecessary service calls, especially on conveyors, pumps, and fans. Application: Ideal for motor control circuits in manufacturing lines and HVAC systems. Feature: High interrupt rating of 300 kAIC at 250 Vac (and 100 kAIC at 125 Vdc) provides robust protection against fault currents. Business Impact: Enhanced system integrity and reduced risk of cascading failures in power distribution. Application: Suitable for critical loads in machine centers and process control. Feature: Voltage ratings of 250 Vac and 125 Vdc support mixed AC/DC sections within the same panel. Business Impact: Streamlined design and fewer part numbers, lowering inventory complexity. Application: Control panels and mixed-voltage drives. Feature: Class RK1 with non-indicating design and standard packaging. Business Impact: Easy replacement in existing Bussmann RK1 fixtures and minimal integration effort. Application: OEM panels and retrofit projects where space is at a premium. Feature: Compact form factor (2 in length, 0.56 in width/height) enables denser control enclosures. Business Impact: Increased housing capacity and reduced enclosure cost. Application: Cabinet design for small to mid-size automation installations. Insight: Many facilities benefit from pairing non-indicating fuses with remote fault indicators to balance visibility and reliability in centralized monitoring setups.
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FAQs
Yes. The LPN-RK-1-8/10SP is a Bussmann RK1 class fuse designed for direct drop-in replacement in standard RK1 holders. Its 2 in length and 0.56 in width/height align with common panel cutouts, and the non-indicating design supports straightforward integration with existing fault monitoring schemes.
Key specs include an amperage rating of 1.8A, voltage ratings of 250 Vac and 125 Vdc, and a high interrupt rating of 300 kAIC at 250 Vac (100 kAIC at 125 Vdc). The stated response time is 8 seconds at 500% overcurrent, making it suitable for inrush-heavy loads while limiting sustained faults.
Absolutely. The time-delay, dual-element RK1 fuse is designed to tolerate motor inrush while protecting wiring and downstream devices. Its low-voltage ratings, high interrupt capability, and compact form factor make it well-suited for HVAC controls, pumps, and other motor-driven equipment in mechanically demanding environments.
This fuse carries CE marking and adheres to Class RK1 fuse standards. It is non-indicating and ready for use in compliant European installations and similar low-voltage control panels, aligning with common industry expectations for reliability and safety.
The LPN-RK-1-8/10SP reduces nuisance trips from inrush events, improving uptime and productivity. Its robust interrupt rating protects feeders and control circuits, potentially lowering downstream repair costs. While it is non-indicating, integrating remote fault indicators can preserve visibility, delivering a favorable total cost of ownership in demanding automation environments.