Eaton LPN-RK-8SP Fuse - Class RK1 Time-Delay
Part Number: LPN-RK-8SP
Quick Summary
The Eaton LPN-RK-8SP fuse protects motor circuits in industrial automation with time-delay, current-limiting protection. Design engineers often contend with nuisance trips during startup surges or mis-coordination that disrupt production schedules. This device is CE marked and built as a Class RK1 fuse with dual elements, 8 A rating, and high interrupt capability at 250 Vac and 125 Vdc. Its compact 2 in length and ferrule-end construction simplifies installation in tight control panels, while the electrically isolated end caps improve safety during maintenance. Together with Eaton Bussmann series compatibility, LPN-RK-8SP offers predictable performance, easy sourcing, and reduced total cost of ownership for industrial facilities.
Product Information
Extended Description
LPN-RK-8SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 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-8SP
UPC
051712538282
EAN
5027590173001
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
8 A
Interrupt rating
100 kAIC at 125 Vdc 300 kAIC at 250 Vac
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
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 250 V LPN Class RK1 time-delay fuses,1/10-60 A data sheet no. 1003
Feature: Time-delay, dual-element current-limiting design → Business Impact: Allows selective protection by tolerating short surges without nuisance tripping, enhancing uptime → Application: Motor drives and conveyors in automation panels. Feature: High interrupt ratings of 300 kAIC at 250 Vac and 100 kAIC at 125 Vdc → Business Impact: Safeguards upstream equipment and wiring during faults, reducing cascading failures and repairs → Application: Main feeders and distribution panels in heavy electrical rooms. Feature: Class RK1 construction with thermally efficient, dual-element design → Business Impact: Standardized protection across the Bussmann lineup simplifies stocking and substitutions, minimizing downtime → Application: Retrofits and replacements in legacy control panels. Feature: Electrically isolated end caps → Business Impact: Safer handling and easier maintenance in cramped enclosures, lowering installation risk → Application: Panel boards and switchgear assemblies where safe servicing matters. Feature: Ferrule end x ferrule end with 2 in length and compact footprint → Business Impact: Fits into standard RK1 fuse holders, reduces installation time and misalignment → Application: Compact automation cabinets and compact power distributions. Feature: 8 A rating at 250 Vac / 125 Vdc with 250 Vac, 125 Vdc voltage ratings → Business Impact: Aligns with common industrial control circuits, streamlining design and procurement → Application: Control circuits, motor protection schemes, and panel protection strategies.
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FAQs
The LPN-RK-8SP uses ferrule end x ferrule end connections and a standard 2 inch length that fits most RK1 fuse holders. It is a non-indicating, time-delay current-limiting fuse designed for easy drop-in replacement in control panels. Ensure the rated voltage (250 Vac / 125 Vdc) matches your system and verify the panel space and mounting clearance before installation.
This fuse is rated at 8 A with a voltage rating of 250 Vac and 125 Vdc. It provides 300 kAIC interrupt rating at 250 Vac and 100 kAIC at 125 Vdc. It has a time-delay, dual-element design with a reported response time of 8 seconds at 500% overcurrent, balancing fast protection with surge tolerance for motors and drives.
Yes. The LPN-RK-8SP is built as a Class RK1 time-delay, current-limiting fuse suitable for motor controllers, conveyors, and industrial control panels. The dual-element design minimizes nuisance trips on startup surges while maintaining robust fault protection, helping maintain production continuity and safe equipment coordination.
The fuse carries a CE mark, indicating compliance with relevant European safety standards. It is a Class RK1 device, aligning with Eaton Bussmann’s RK1 product family specifications. For RoHS-related information, Eaton provides a RoHS tool to verify substance compliance across its catalog, supporting environmental and regulatory expectations.
The LPN-RK-8SP is a non-indicating, replaceable fuse, designed for straightforward service and quick replacement in standard RK1 holders. Its high interrupt ratings and time-delay characteristics reduce downtime during faults and startup surges, contributing to lower maintenance costs and improved equipment availability over the lifecycle of industrial automation assets.