Eaton LPN-RK-450SP Fuse - Class RK1, 450A, 300 kAIC, CE RoHS
Part Number: LPN-RK-450SP
Quick Summary
Engineers rely on the Eaton LPN-RK-450SP fuse for reliable overcurrent protection in power distribution and motor-control applications. This fuse addresses nuisance blowing during inrush events and protects equipment without sacrificing startup performance. The product is CE marked and RoHS compliant, supporting global safety and environmental standards. By combining a Class RK1, time-delay, dual-element design with a 450 A rating and 300 kAIC interrupt capability, it helps reduce downtime and maintenance costs in harsh industrial environments. This translates to improved line reliability and predictable protection for feeders, motors, and control circuits, while enabling easier procurement and consistent performance across Eaton Bussmann series installations.
Product Information
Extended Description
LPN-RK-450SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 450 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-450SP
UPC
051712538565
Product Length/Depth
10.38 in
Product Height
2.88 in
Product Width
2.88 in
Product Weight
3.25 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
450 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
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 → Business Impact → Application: Time-delay, dual-element design provides controlled response to inrush currents, reducing nuisance trips while maintaining robust fault protection. This translates to fewer production stops and smoother motor startups in conveyor lines and pump stations, especially where high inrush is common. Application: motor control centers and heavy machinery where startups are frequent and uptime is critical. Business Impact: improved equipment availability and lower maintenance costs. Feature → Business Impact → Application: 300 kAIC interrupt rating at 250 Vac and 100 kAIC at 125 Vdc delivers high fault-current tolerance, safeguarding feeders and drives against catastrophic failures. Application: large feeders and critical power circuits in manufacturing plants. Business Impact: enhanced protection margins and reduced risk of equipment damage. Feature → Business Impact → Application: 450 A continuous rating with 250 Vac/250 Vdc voltage ratings ensures compatibility with both AC and DC systems. Application: DC bus protection and AC motor circuits. Business Impact: a single fuse solution across multiple systems reduces parts diversity and stocking complexity. Feature → Business Impact → Application: Class RK1 construction with blade-end connections and dual elements enables straightforward retrofit and panel integration. Application: new builds and service upgrades in automotive, packaging, and process industries. Business Impact: faster installation, fewer field errors, and consistent performance. Feature → Business Impact → Application: Non-indicating fuse body with optional high inrush protection features minimizes misinterpretation in indicator-light schemes while preserving reliability. Application: control panels with centralized status monitoring. Business Impact: clearer maintenance planning and reduced operator confusion. Feature → Business Impact → Application: CE Mark and RoHS compliance ensure global regulatory alignment, simplifying cross-border procurement. Application: multinational projects and supplier qualification. Business Impact: reduced compliance risk and streamlined supplier audits.
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FAQs
The LPN-RK-450SP uses blade-end connections compatible with standard RK1 mounting schemes. Install in accordance with Eaton Bussmann series guidelines, ensuring secure blade contacts, proper alignment, and appropriate panel clearance. Use the standard packaging as supplied and verify voltage and current ratings match the circuit. This approach minimizes contact resistance and ensures consistent fault clearing performance.
Key specs include a 450 A amperage rating, 300 kAIC interrupt rating at 250 Vac, and 100 kAIC at 125 Vdc. The fuse is time-delay and current-limiting, class RK1, with 250 Vac and 250 Vdc voltage ratings. These ratings support protection of high-load feeders and motor drives while accommodating inrush without premature tripping.
Yes. The Class RK1, time-delay, dual-element design is well suited for motor protection and high inrush conditions found in industrial feeders and drives. Its high interrupt ratings and robust construction help withstand fault events, while CE marking and RoHS compliance support global deployment and regulatory adherence across industries like packaging, manufacturing, and process automation.
The LPN-RK-450SP carries CE marking and RoHS compliance, aligning with European safety and environmental standards. While it is designed to meet critical protection needs in industrial applications, it is not specified as SIL-rated or IP-rated in the provided data. Always verify project-specific regulatory requirements during procurement.
By combining a high interrupt rating with reliable time-delay protection, the LPN-RK-450SP reduces nuisance trips and motor wear, lowering downtime and maintenance costs. Its standardized form factor and compatibility with Eaton Bussmann series simplify stocking and parts management, while its robust protection minimizes unexpected replacement needs in critical lines.