Eaton LPNRK8SPNP Fuse - Class RK1, 85A, Time Delay - RoHS
Part Number: LPNRK8SPNP
Quick Summary
The Eaton LPNRK8SPNP fuse delivers time-delay, current-limiting protection for distribution switchboards, power panelboards, and motor control centers. Engineers often wrestle with nuisance trips and limited protection in dense switchgear layouts, leading to unplanned downtime. RoHS compliant with a Class RK1 designation, this fuse supports regulatory and protection standards while offering reliable performance. Nickel-plated caps enhance durability in harsh environments, and the compact 3 x 3 x 1.5 inch form factor facilitates installation in crowded panels. By combining robust protection with easy procurement and replacement, this solution helps reduce maintenance costs and improve system uptime across industrial facilities.
Product Information
Extended Description
LPNRK8SPNP Eaton: Eaton Bussmann series LPN-RK fuse, Nickel plated caps, Large distribution switchboards, Power panelboards, Motor control centers, 85 A, Class RK1, Non-indicating, Time delay, Current-limiting, Standard
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPNRK8SPNP
UPC
051712608732
Product Length/Depth
3 in
Product Height
3 in
Product Width
1.5 in
Product Weight
0.16 lb
Warranty
Not Applicable
Compliances
RoHS Compliant
Certifications
Contact Manufacturer
Amperage Rating
85 A
Fuse type
Time delay Current-limiting
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Special features
Nickel plated caps
LPNRK8SPNP~LOW PEAK, NICKEL-PLATED
LPNRK8SPNP~LOW PEAK, NICKEL-PLATED
Bussmann series Fuseology
Eaton Specification Sheet - LPNRK8SPNP
Feature → Business Impact → Application: Time-delay current-limiting design provides short-term inrush tolerance without compromising fault interruption, reducing nuisance trips and equipment wear; improves overall line efficiency and uptime in motor control centers and distribution boards. Feature → Business Impact → Application: Class RK1 rating ensures standardized protection for branch circuits in large power panelboards, enabling consistent safety margins and easier integration with upstream protective devices. Feature → Business Impact → Application: Nickel-plated caps resist corrosion and extend fuse life in challenging environments, lowering maintenance frequency in switchgear rooms and outdoor installations. Feature → Business Impact → Application: Compact 3 in length, 3 in height, and 1.5 in width fit tightly packed MCCs and distribution panels, enabling denser layouts and reduced enclosure footprint. Feature → Business Impact → Application: RoHS compliant construction supports global deployments and regulatory compliance, simplifying cross-border procurement and reducing compliance risk. Feature → Business Impact → Application: Standard packaging reduces stocking complexity and accelerates replacement cycles during preventative maintenance, minimizing downtime and inventory carrying costs.
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FAQs
The LPNRK8SPNP is designed for large distribution switchboards and motor control centers. Its 85 A rating and Class RK1 classification align with common MCC protection schemes, while its compact 3 x 3 x 1.5 inch footprint enables integration into crowded enclosures. Nickel-plated caps also resist corrosion in harsh environments, reducing replacement frequency within MCCs.
This fuse features time-delay characteristics that tolerate short inrush currents common in motor startup and heavy load changes. As a result, nuisance trips are minimized, preserving motor life and reducing unplanned downtime. The current-limiting behavior also helps protect downstream components from high fault currents, improving overall system reliability.
RoHS compliance is confirmed for the LPNRK8SPNP, supporting regulatory requirements in many regions. For additional certifications such as UL or CE marks, users should contact the manufacturer or consult the Eaton specification sheet and catalog references provided in the downloads to verify current approvals for their specific application.
Key physical specs include 3 in length, 3 in height, 1.5 in width, and a weight of 0.16 lb. The fuse is non-indicating with nickel-plated caps and a standard packaging type. These dimensions and features support straightforward cross-compatibility with standard RK1 compatible holders in switchgear assemblies.
The fuse reduces downtime due to its reliable fault response and minimized nuisance trips, lowering unplanned maintenance hours. Its corrosion-resistant caps extend service life in challenging environments, decreasing replacement frequency. Standardized RK1 class protection simplifies integration with existing devices, cutting spare-part inventories and procurement cycle times across multiple facilities.