Eaton LPN-RK-225SP-TP fuse - Class RK1
Part Number: LPN-RK-225SP-TP
Quick Summary
Eaton LPN-RK-225SP-TP fuse protects industrial drives and panels with fast-acting current-limiting, time-delay performance. End users often face nuisance tripping from high inrush currents; this fuse mitigates that with calculated delay, allowing motor starts and load surges without compromising protection. RoHS compliant and Class RK1 this design aligns with standard electrical protection requirements, while tin-plated contacts enhance reliability in harsh environments. By choosing this Bussmann series fuse, engineers gain predictable coordination with upstream breakers, reduced maintenance, and longer system uptime. The non-indicating design simplifies diagnostics in dense control cabinets and supports scalable installations across machinery lines and automation panels.
Product Information
Extended Description
LPN-RK-225SP-TP Eaton: Eaton Bussmann series LPN-RK fuse, 225 A, Class RK1, Non-indicating, Blade end x blade end, Time delay, Current-limiting, 300 kAIC at 250 V, 100 kAIC at 250 Vdc, Tin-plated, Standard
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPN-RK-225SP-TP
UPC
051712557412
Product Length/Depth
8.63 in
Product Height
2.36 in
Product Width
2.36 in
Product Weight
1.75 lb
Warranty
Not Applicable
Compliances
RoHS Compliant
Amperage Rating
225 A
Interrupt rating
300 kAIC at 250 Vac 100 kAIC at 250 Vdc
Fuse type
Time delay Current-limiting
Material
Tin-plated
Packaging type
Standard
Class
Class RK1
Connection
Blade end x blade end
Fuse indicator
Non-indicating
Special features
Indicating, High in-rush current motor protection
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - LPN-RK-225SP-TP
Feature: 225 A amperage rating with time-delay, current-limiting operation. Business Impact: Balances fast fault clearance with tolerance for motor inrush, reducing nuisance trips and unplanned downtime. Application: Ideal for motor drives and control panels where startups involve brief surges. Feature: High interrupt ratings of 300 kAIC at 250 Vac and 100 kAIC at 250 Vdc. Business Impact: Provides robust upstream protection for feeders and equipment in high fault-current environments, lowering the risk of cascading failures. Application: Power distribution cabinets and industrial automation layouts demanding strong fault clearance.Feature: Class RK1, blade end x blade end configuration. Business Impact: Streamlined integration with standard Bussmann RK1 fuse holders; quick installation and reliable mating reduces downtime during panel upgrades. Application: Replacement in legacy RK1 systems and new panel designs.Feature: Tin-plated material and RoHS compliance. Business Impact: Enhances contact reliability and corrosion resistance in harsh environments while meeting regulatory requirements. Application: Outdoor and humid environments, or installations with strict environmental compliance.Feature: Non-indicating fuse indicator and standard packaging. Business Impact: Simplifies diagnostics and reduces false indicators in dense panels; standard packaging supports easy stocking and replacement. Application: Mass deployments across production lines with consistent maintenance routines.
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FAQs
The LPN-RK-225SP-TP uses blade end x blade end connections designed for standard RK1 fuse holders. It drops into compatible sockets with a tight, secure fit, and its 8.63 in body length accommodates typical panel footprints. The tin-plated contacts improve mating reliability, while the non-indicating design keeps diagnostics simple in crowded enclosures.
This fuse is rated for 225 A, with a 300 kAIC interrupt rating at 250 Vac and 100 kAIC at 250 Vdc. It is a time-delay, current-limiting device designed to tolerate motor inrush while protecting circuits from faults. Dimensions include 8.63 in length, 2.36 in width, and 2.36 in height, with a weight around 1.75 lb.
Yes. The time-delay characteristic allows brief inrush currents typical of motor startups without unnecessary tripping, while the current-limiting feature protects conductors and components downstream. This makes it a practical choice for motor drives and power panels where startups are frequent and reliability is critical.
The LPN-RK-225SP-TP is RoHS compliant, aligning with environmental and regulatory requirements. It features Class RK1 designation for standard Bussmann series protection, and its tin-plated contacts resist corrosion, improving long-term reliability in industrial environments.
The fuse offers improved uptime through reduced nuisance trips during inrush, lower maintenance due to robust tin-plated contacts, and compatibility with standard RK1 panel designs, which simplifies stocking and replacements. Its high interrupt rating adds protection peace of mind, potentially reducing downstream repair costs after faults.