Eaton LPNRK2-1/2SPNP Fuse - Class RK1 Time-Delay, 2.5A
Part Number: LPNRK2-1/2SPNP
Quick Summary
The Eaton LPNRK2-1/2SPNP fuse provides reliable overcurrent protection for distribution panels, MCCs, and power centers. In practice, engineers face nuisance trips from transient loads and crowded switchgear layouts; this time-delay, current-limiting fuse helps manage fault currents without unnecessary outages while fitting neatly into standard Bussmann series catalog footprints. RoHS compliant and built with nickel-plated caps, the device combines durability with regulatory alignment, and its Class RK1 designation supports common protection schemes. For OEMs and maintenance teams, this results in smoother procurement, easier stocking, and reduced downtime while maintaining robust protection for critical electrical infrastructure such as large distribution switchboards and motor control centers.
Product Information
Extended Description
LPNRK2-1/2SPNP Eaton: Eaton Bussmann series LPN-RK fuse, Nickel plated caps, Large distribution switchboards, Power panelboards, Motor control centers, 2.5 A, Class RK1, Non-indicating, Time delay, Current-limiting, Standard
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPNRK2-1/2SPNP
UPC
051712608589
Product Length/Depth
3 in
Product Height
11 in
Product Width
3 in
Product Weight
2.8 lb
Warranty
Not Applicable
Compliances
RoHS Compliant
Certifications
Contact Manufacturer
Amperage Rating
2.5 A
Fuse type
Time delay Current-limiting
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Special features
Nickel plated caps
LPNRK2-1/2SPNP~LPNRK2-1-2SPNP~LOW PEAK NI PLATED CAPS
LPNRK2-1/2SPNP~LPNRK2-1-2SPNP~LOW PEAK NI PLATED CAPS
Bussmann series Fuseology
Eaton Specification Sheet - LPNRK2-1/2SPNP
Feature: Amperage rating of 2.5 A. Business impact: protects small to medium load circuits with precise current limits, reducing the risk of overheating and component wear. Application: ideal for distribution panels and panelboard feeder circuits in motor control centers. Feature: Time-delay, current-limiting fuse design. Business impact: tolerates short transients and motor-start surges without nuisance tripping, improving equipment uptime and process continuity. Application: motor drives and large switchgear where inrush is common. Feature: Class RK1 construction. Business impact: standardized protection in a broad range of Eaton Bussmann series installations, aiding cross-compatibility and fast replacement. Application: large distribution switchboards and power panelboards. Feature: Nickel plated caps. Business impact: enhanced durability in harsh electrical environments, extending fuse life and reducing maintenance cycles. Application: industrial plants with frequent plug-and-play replacement needs. Feature: RoHS compliant. Business impact: regulatory compliance and sustainability benefits across manufacturing facilities. Application: global deployments with strict material requirements. Feature: Standard packaging. Business impact: supports straightforward procurement and inventory planning, reducing order cycles. Application: OEM integration and service-led projects.
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FAQs
To install, verify the panel accepts RK1-class fuses and uses standard 3 in by 3 in form-factor footprints. Remove power, align the fuse with the bus bars, and seat it firmly in the holder. Ensure the amperage matches the circuit rating (2.5 A) and replace any damaged caps with nickel-plated units. Confirm RoHS compatibility remains intact after replacement.
The LPNRK2-1/2SPNP employs a time-delay element to tolerate short transients while its current-limiting feature constrains let-through current during faults. This combination minimizes nuisance trips during startup or brief surges and swiftly interrupts sustained faults, protecting conductors, contacts, and downstream equipment in panels and MCCs.
Yes. With a 2.5 A rating and RK1 class construction, it supports protection in large distribution switchboards, power panelboards, and motor control centers. The fuse’s time-delay design accommodates motor start-up while providing robust protection for feeders and control circuits, aligning with typical Bussmann series configurations.
This fuse is RoHS compliant, supporting regulatory requirements for many global deployments. For formal certifications, review the manufacturer datasheet and catalog references. If needed, contact Eaton for official certification documents and verification of RoHS compliance across production lots and part revisions.
Using a standard RK1 fuse from the Eaton Bussmann family simplifies procurement with a familiar catalog number, reducing stocking complexity and lead times. The nickel-plated caps and durable construction lower replacement frequency in harsh environments, while the time-delay, current-limiting design minimizes downtime during transients, delivering a lower total cost of ownership over the panel lifecycle.