Eaton LPN-RK-225SP Fuse - Class RK1 RoHS CE
Part Number: LPN-RK-225SP
Quick Summary
The Eaton LPN-RK-225SP fuse provides time-delay protection for motor and power circuits, enabling selective tripping and fine control in demanding industrial drives and panelboard installations. Many facilities struggle with nuisance trips caused by motor start-up surges and inrush currents that interrupt production schedules and raise maintenance costs; this fuse mitigates those risks. This device is CE marked and RoHS compliant, reinforcing regulatory acceptance while supporting safer, more sustainable manufacturing practices across global facilities. Its Class RK1 designation with dual elements and blade-end connections streamlines replacement, while its non-indicating design reduces panel clutter and improves serviceability during maintenance. Designed for Eaton Bussmann downstream compatibility, it also supports efficient spare-part management and faster commissioning in control panels.
Product Information
Extended Description
LPN-RK-225SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 225 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-225SP
UPC
051712538510
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 CE Marked
Amperage Rating
225 A
Interrupt rating
300 kAIC at 250 Vac 100 kAIC at 250 Vdc
Voltage rating
250 Vac, 250 Vdc
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class RK1
Connection
Blade end x blade end
Fuse indicator
Non-indicating
Quantity
1
Special features
Non-indicating, High in-rush current motor protection
Bussmann series Class J Low-Peak fuse 70-600A data sheet No. 1007
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Feature: Time-delay, dual-element design provides controlled inrush response while preserving circuit protection. Benefit: Reduces nuisance trips on motor starting and keeps production lines running, especially for conveyors and pumps. Application: Motor drives and industrial power feeds where precise coordination is required. Feature: Current-limiting capability with a 225 A rating harmonizes protection with conductor sizing, lowering fault energy and enhancing component longevity. Benefit: Minimizes damage to cables and equipment during faults, improving uptime and reducing replacement costs. Application: Heavy-load feeders and power distribution panels. Feature: High interrupt ratings—300 kAIC at 250 Vac and 100 kAIC at 250 Vdc—coupled with 250 Vac / 250 Vdc voltage ratings offer robust fault clearance. Benefit: Safer fault interruption in demanding environments, enabling maintenance windows and minimizing fire risk. Application: Industrial machines, robotics cells, and critical power circuits. Feature: Class RK1 compatibility and blade-end x blade-end connection simplify installation and retrofit. Benefit: Faster commissioning and easier stocking of spares within existing Bussmann lineups. Application: Panel upgrades and new builds requiring quick, reliable replacements. Feature: Non-indicating fuse with RoHS and CE compliance ensures environmental and regulatory alignment. Benefit: Cleaner panel aesthetics and broad market acceptance across global sites. Application: Global manufacturing facilities needing compliant protection.
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FAQs
Yes. The LPN-RK-225SP is a Class RK1 style fuse from the Bussmann series and uses blade-end connections designed for RK1-compatible holders. Its dual-element, time-delay design fits standard Bussmann RK1 panels, enabling straightforward retrofits or new installations. The 8.63 inch length and 2.36 inch width/height simplify enclosure planning, while the 225 A rating supports heavy loads without sacrificing protective coordination.
Key specs include an amperage rating of 225 A, voltage rating of 250 Vac / 250 Vdc, and interrupt ratings of 300 kAIC at 250 Vac and 100 kAIC at 250 Vdc. The device is time-delay and current-limiting, providing controlled fault clearing while tolerating motor inrush. These ratings support reliable protection for feeders, motor starters, and power distribution in demanding industrial environments.
Absolutely. The LPN-RK-225SP’s time-delay, dual-element design handles motor inrush while delivering fast fault interruption when needed. Its 225 A rating aligns with medium-to-heavy load conveyors, and the Class RK1 form factor facilitates easy replacement. For conveyor systems with frequent short accelerations, this fuse improves uptime by reducing nuisance trips and extending component life.
The fuse is CE marked and RoHS compliant, ensuring regulatory acceptance in many regions and support for environmentally conscious manufacturing practices. While it does not list SIL or IP ratings, the CE/RoHS certifications provide essential market access and environmental compliance for most industrial applications.
Using the LPN-RK-225SP can lower maintenance costs by reducing nuisance trips and enabling quicker, simpler replacement due to blade-end connections and RK1 compatibility. The robust interrupt ratings protect downstream equipment, potentially lowering downtime and extending asset life. Overall, you gain improved uptime, streamlined spares management, and regulatory compliance, contributing to a favorable return on investment.