Eaton LPN-RK-110SPI Fuse - Class RK1, 300 kAIC
Part Number: LPN-RK-110SPI
Quick Summary
The Eaton LPN-RK-110SPI fuse is a Class RK1 dual-element, time-delay device designed to protect motor circuits in industrial control panels. Nuisance tripping from motor inrush is a common pain point; this fuse balances a controlled delay with fast fault clearing to keep production moving. With CE marking and availability in indicating or non-indicating variants, it aligns with EU safety requirements and maintenance workflows. The solution pairs high reliability with practical installation in standard RK1 fuse holders, supporting predictable downtime and easier spare-part planning. By combining motor protection with compact sizing and clear documentation, this fuse helps engineers meet safety, reliability, and uptime targets while supporting scalable control-system design.
Product Information
Extended Description
LPN-RK-110SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 110 A, indicating fuse, interrupting rating of 300 kA at 250 Vac
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPN-RK-110SPI
UPC
051712626743
Product Length/Depth
7.13 in
Product Height
1.61 in
Product Width
1.61 in
Product Weight
0.69 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
110 A
Interrupt rating
100 kAIC at 250 Vdc 300 kAIC at 250 Vac
Voltage rating
250 Vac, 250 Vdc
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating With Indicator
Quantity
1
Special features
Indicating, High in-rush current motor protection
Bussmann series Class J Low-Peak fuse 70-600A data sheet No. 1007
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Feature: Class RK1 dual-element, time-delay, current-limiting fuse. Business impact: protects motors and circuitry during startup surges while minimizing nuisance trips, reducing unplanned downtime. Application: motor starters, drives, and control panels in manufacturing environments. Feature: 110 A amperage rating with voltage rating of 250 VAC and 250 VDC; interrupt rating 300 kAIC at 250 VAC and 100 kAIC at 250 VDC. Business impact: dependable fault clearance for both AC and DC sections, improving safety margins and limiting equipment damage. Application: branch circuits feeding motors, contactors, and power supplies in industrial equipment. Feature: Dual elements and time-delay characteristics for high inrush motor protection. Business impact: allows safe energization of heavy loads like pumps and conveyors without compromising protection. Application: industrial pumps, fans, and material-handling systems. Feature: Compact physical footprint with 7.13 in length and 1.61 in square cross-section; standard packaging. Business impact: easier integration into compact control panels and retrofit projects, lowering installation time and stock variety. Application: space-constrained MCCs and switchgear assemblies. Feature: Indicating option availability and CE compliance. Business impact: enhanced maintenance visibility reduces fault-detection time; regulatory alignment supports audits and safety programs. Application: monitored industrial environments and regulated facilities.
Get a Quick Quote for a Eaton LPN-RK-110SPI
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton LPN-RK-110SPI?
Enquire Now
FAQs
The LPN-RK-110SPI is designed for standard Class RK1 fuse holders used in industrial control panels. It wires in series with the protected circuit, with the amperage rating marking clearly indicating the protection level. When selecting a holder, ensure it matches RK1 form factors and allows for safe removal with the indicated or non-indicating variants. Proper torque and clearances should follow established panel design practices to prevent arcing and ensure consistent contact resistance.
This fuse provides 110 A nominal amperage with a voltage rating of 250 VAC and 250 VDC. Its interrupt ratings are 300 kAIC at 250 VAC and 100 kAIC at 250 VDC. These specifications support reliable short-circuit clearance in AC motor circuits while tolerating DC drives and power supplies, reducing the risk of equipment damage during faults and maintaining system uptime.
The LPN-RK-110SPI is well-suited for industrial motor protection in manufacturing, HVAC, pump and conveyor drives, and process automation panels. Its dual-element, time-delay design handles inrush currents common in motor start-ups, while its high interrupt rating helps protect downstream equipment. It is particularly effective in retrofit projects where space is at a premium and reliability is critical.
The product carries CE marking, indicating compliance with EU safety directives. For detailed compliance and material certifications, users can reference the Eaton RoHS tool to verify RoHS-related information and consult the data sheets and catalogs linked in the downloads. Note that other certifications (such as SIL or IP ratings) are not listed for this specific catalog number, so verify project requirements accordingly.
Using the LPN-RK-110SPI can reduce maintenance overhead by providing clear protection margins for motor circuits and, where available, an indicating option to quickly assess fuse status. Its durable construction and high interrupt rating lower the risk of catastrophic failures, translating into reduced downtime and longer equipment life. While initial cost may be higher than basic fuses, reduced downtime and easier spares management improve total cost of ownership over the life of a control system.