Eaton LPN-RK-3-2/10SP fuse - Class RK1 time-delay 300 kAIC
Part Number: LPN-RK-3-2/10SP
Quick Summary
The LPN-RK-3-2/10SP fuse from Eaton Bussmann is a time-delay Class RK1 device designed to protect motor circuits and industrial loads. Engineers often face nuisance trips during motor starts and inrush events, risking downtime and expensive equipment wear. This fuse carries CE marking and adheres to RK1 protection standards, delivering reliable, predictable performance across European and global panels. With a 3.2 A rating and a compact 2 in body, it combines secure ferrule-end connections with strong interrupt capability to support sustainable uptime, while the non-indicating design simplifies panel layouts and reduces wiring complexity. This combination helps maintain compliance while easing maintenance planning.
Product Information
Extended Description
LPN-RK-3-2/10SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 3.2 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-3-2/10SP
UPC
051712538190
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
3.2 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
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
Time-delay, dual-element construction enables controlled current limiting during motor startups, smoothing the inrush and protecting downstream components. This translates to fewer nuisance trips and reduced wear on contactors and drives, delivering higher line reliability in conveyors, pumps, and fans. In practice, it pairs well with motor protection relays and variable-frequency drives by offering predictable trip behavior during transient events. High interrupt ratings of 100 kAIC at 125 Vdc and 300 kAIC at 250 Vac provide a robust shield against short circuits in demanding industrial environments. The result is safer motor feeders and minimized risk to upstream transformers and protection relays. This rating also supports a wider fault current window for panels that combine soft starters and drives, reducing the likelihood of cascading trips. Non-indicating design minimizes visual clutter in control panels, speeding inspection and reducing misinterpretation during maintenance. Combined with ferrule-end x ferrule-end connections, installation is straightforward in standard Bussmann wiring schemes. The non-indicating feature also simplifies compliance checks during audits, since fewer indicators exist to verify. The compact 2 in length and 0.56 in width/height, plus a 0.5 lb weight, support dense panel layouts and retrofit projects. Packaging of 10 per pack and CE compliance streamline stocking, procurement, and documentation for compliance audits. The ferrule connections provide reliable termination that resists vibration and thermal cycling in industrial environments. Engineers appreciate the 8-second response time at 500% overload, ensuring protection without sacrificing system availability. The LPN-RK-3-2/10SP balances performance and cost, making it a practical choice for motor protection on HVAC equipment, pumps, conveyors, and automation drives. Its rugged build, long-term availability, and compatibility with standard Eaton Bussmann accessories help reduce total cost of ownership.
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FAQs
The LPN-RK-3-2/10SP is designed for ferrule-end x ferrule-end connections and fits standard Bussmann wiring schemes. It measures 2 inches in length with a 0.56 inch width and height, and it ships in packs of 10, making it practical for panel-mwise stocking in tight control cabinets.
This fuse provides 100 kAIC interrupt rating at 125 Vdc and 300 kAIC at 250 Vac, with an 8-second response time at 500% overload. These specs enable robust protection in high-fault scenarios while keeping nuisance trips to a minimum during normal startup transients.
Yes. The time-delay, dual-element design targets motor inrush events, reducing nuisance trips in HVAC compressors, pumps, and drive-driven machinery. Its Class RK1 protection and high interrupt ratings make it a reliable choice for motor feeders in dynamic industrial environments.
The LPN-RK-3-2/10SP is CE Marked, indicating compliance with European safety and performance standards for electrical devices. While UL or other certifications aren’t listed in the provided data, CE marking supports compliance in European panels and systems.
Non-indicating design reduces panel indicators, simplifying diagnostics during maintenance. Its durable, replaceable nature and high interrupt ratings help minimize downtime during faults, while the 10-pack packaging supports efficient stock management. Overall, it lowers total cost of ownership by combining reliable protection with easy installation and maintenance.