Eaton LPNRK1/2SPNP Fuse - Class RK1 0.5A, RoHS Compliant
Part Number: LPNRK1/2SPNP
Quick Summary
LPNRK1/2SPNP fuse provides reliable current-limiting protection for large distribution switchboards. Engineered to handle inrush without nuisance tripping, this Eaton Bussmann Series device helps keep panels, motor control centers, and distribution systems running smoothly in control rooms and industrial facilities. For engineers, unpredictable fuse behavior and weak caps are persistent pain points; this fuse’s time-delay, current-limiting rating mitigates those issues while enabling selective coordination with upstream protection. It carries RoHS compliance and is Class RK1 categorized, with non-indicating status and nickel-plated caps for durability. Comprehensive support comes from Eaton’s specification sheets and datasheets, helping procurement teams verify compatibility, traceability, and long-term maintenance strategy. The product aligns with standard panelboard protection practices, delivering reliable protection alongside streamlined sourcing and stocking advantages.
Product Information
Extended Description
LPNRK1/2SPNP Eaton: Eaton Bussmann series LPN-RK fuse, Nickel plated caps, Large distribution switchboards, Power panelboards, Motor control centers, 0.5 A, Class RK1, Non-indicating, Time delay, Current-limiting, Standard
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPNRK1/2SPNP
UPC
051712501125
Product Length/Depth
4.25 in
Product Height
3.25 in
Product Width
1.5 in
Product Weight
1.24 lb
Warranty
Not Applicable
Compliances
RoHS Compliant
Certifications
Contact Manufacturer
Amperage Rating
0.5 A
Fuse type
Time delay Current-limiting
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Special features
Nickel plated caps
LPNRK1/2SPNP~LPNRK1-2SPNP~LOW PEAK NI PLATED CAPS
LPNRK1/2SPNP~LPNRK1-2SPNP~LOW PEAK NI PLATED CAPS
Bussmann series Fuseology
Eaton Specification Sheet - LPNRK1/2SPNP
Feature: Time-delay, current-limiting operation paired with a 0.5 A rating. Business Impact: Enables selective coordination and surge tolerance without compromising downstream equipment. Application: Ideal for large distribution switchboards, power panelboards, and motor control centers. Feature: Class RK1 fuse classification with standard packaging. Business Impact: Simplifies replacement in Bussmann RK1 families, reduces downtime, and streamlines procurement. Application: Fits into common panelboard configurations with minimal modification. Feature: Nickel-plated caps. Business Impact: Improves contact durability and corrosion resistance in demanding environments, extending service life. Application: Suitable for factory floors and high-humidity installations. Feature: RoHS Compliant and documented via manufacturer sheets. Business Impact: Supports regulatory compliance and cleaner disposal while easing supplier qualification. Application: Helpful for regulated projects and centralized sourcing programs. Feature: Dimensions and weight (4.25 in L Ă— 3.25 in H Ă— 1.5 in W, 1.24 lb). Business Impact: Predictable form factor enables accurate space planning and mounting in large distribution assemblies. Application: Ensures compatibility with standard distribution switchboards and motor control centers.
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FAQs
To install the LPNRK1/2SPNP, first verify the catalog number and amperage rating (0.5 A) match your panel requirements. Ensure the fuse holder is clean, align the fuse contacts with the bus bars, and gently seat the nickel-plated caps to achieve solid contact. Replace only with an identical RK1-class fuse from the Bussmann series to maintain protection coordination and RoHS compliance. Always follow manufacturer guidelines and lockout/tagout procedures during replacement.
The fuse offers time-delay behavior, enabling inrush tolerance without sacrificing downstream protection, which is essential in motor control centers. The 0.5 A rating provides precise protection for control circuits while nickel-plated caps improve longevity in demanding environments. Its RK1 classification ensures compatibility with standard motor control center assemblies, and RoHS compliance supports regulatory requirements for industrial facilities.
Yes, the LPNRK1/2SPNP is RoHS compliant. This means the fuse materials meet restricted substances requirements, facilitating safer disposal and reduced environmental impact. For maintenance, RoHS compliance simplifies supplier qualification and aligns with sustainability goals while preserving circuit protection standards in industrial equipment.
The extended data lists the warranty as Not Applicable, which means there isn’t a manufacturer warranty specified for this item. However, Eaton provides official specification sheets and catalogs that detail performance, compatibility, and replacement guidance. For critical applications, verify project-specific terms with the supplier and ensure alternate spares are stocked to support uptime in Mission-Critical environments.
With a length of 4.25 in, height of 3.25 in, and width of 1.5 in, the LPNRK1/2SPNP fits within standard distribution switchboards and power panelboards. The standard packaging type simplifies stocking, reduces lead times, and enables quicker replacements during preventive maintenance. When planning layouts, account for clearance around fuse holders to accommodate nickel-plated caps and safe extraction during service operations.