Eaton LPN-RK-12SP fuse - Class RK1 Time-Delay
Part Number: LPN-RK-12SP
Quick Summary
The Eaton LPN-RK-12SP fuse provides time-delay protection for motor and power circuits. Designers often struggle with nuisance trips caused by inrush currents during motor start-up, which can impact uptime and productivity. This CE-marked solution is built to Class RK1 standards, featuring a dual-element, current-limiting design for robust protection. Its compact form and ferrule-end connections simplify panel integration, helping you protect equipment while preserving accessibility for maintenance and future upgrades.
Product Information
Extended Description
LPN-RK-12SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 12 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-12SP
UPC
051712538312
EAN
5027590064071
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
12 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
Feature: Time-delay, dual-element, current-limiting design. Business impact: Allows normal motor inrush without sacrificing protection against short circuits, reducing downtime and false trips in start-up sequences. Application: Motor starters and drive circuits where inrush is common. Feature: 12 A amperage rating. Business impact: Provides precise protection for mid-range loads, preventing overcurrent damage while enabling safe operation. Application: General protection in commercial/industrial panels. Feature: Compact footprint: 2 in length with 0.56 in width and height. Business impact: Enables use in tight control panels and crowded enclosures, improving installability and service access. Application: Space-constrained motor control centers. Feature: High interrupt ratings at AC/DC: 300 kAIC at 250 VAC and 100 kAIC at 125 VDC. Business impact: Robust fault current protection in high-energy systems, supporting safer electrical distribution. Application: Industrial power circuits and drives. Feature: Non-indicating fuse with ferrule-end connections. Business impact: Reduces panel noise and simplifies replacement in standardized ferrule-terminal deployments. Application: OEM and retrofit projects with established ferrule wiring. Feature: Special features include suitability for high in-rush current motor protection. Business impact: Improves reliability of motor protection schemes in frequently started equipment. Application: Pumps, fans, conveyors, and compressors.
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FAQs
The LPN-RK-12SP uses ferrule-end terminations, which aligns with common industrial wiring practices for fast, secure connections in control panels. This compatibility reduces installation time and improves termination reliability, supporting clean panel layouts and easier future maintenance.
This fuse is a dual-element, time-delay device with a 12 A amperage rating, rated for 250 VAC and 125 VDC. It provides 300 kAIC interrupt rating at 250 VAC and 100 kAIC at 125 VDC, delivering reliable protection against short circuits while tolerating motor inrush during startup.
Yes. The time-delay, dual-element design is specifically intended to handle motor inrush without nuisance tripping, making it suitable for motor control centers, drives, and other equipment with frequent startups. Its RK1 class and current-limiting features help protect wiring and components.
The product is CE-marked, indicating compliance with European safety requirements. It adheres to Class RK1 fuse standards for reliability in industrial protection schemes and is designed for robust performance in motor and power circuits.
With high interrupt ratings and a compact form factor, the LPN-RK-12SP reduces the risk of costly faults while enabling easier retrofit and panel upgrades. Its non-indicating design minimizes panel indicators while maintaining reliable protection, contributing to lower maintenance overhead and longer equipment life.