Eaton LPNRK45SPNP Fuse - Class RK1 Time-Delay
Part Number: LPNRK45SPNP
Quick Summary
Eaton Bussmann series LPN-RK fuse protects power distribution and motor control centers in industrial panels. This fuse design helps reduce nuisance interruptions by balancing fast fault clearing with selective protection. Certifications and documentation vary by market, but common references include Class RK1 protection and non-indicating indicators; component compatibility and performance are supported by nickel-plated caps for durability. For engineers and buyers, this translates to reliable protection with straightforward replacement in large switchboards and panelboards, while maintaining supply chain efficiency through standard packaging and widely available accessories.
Product Information
Extended Description
LPNRK45SPNP Eaton: Eaton Bussmann series LPN-RK fuse, Nickel plated caps, Large distribution switchboards, Power panelboards, Motor control centers, 45 A, Class RK1, Non-indicating, Time delay,Current-limiting, Standard
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPNRK45SPNP
UPC
051712608770
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
0.15 lb
Warranty
Not Applicable
Compliances
Not Applicable
Certifications
Contact Manufacturer
Amperage Rating
45 A
Fuse type
Time delay Current-limiting
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Special features
Nickel plated caps
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - LPNRK45SPNP
The 45 A amperage rating delivers targeted protection for feeders and branch circuits, reducing the risk of equipment damage while enabling smoother maintenance windows, which translates to lower downtime and improved uptime metrics in mission-critical facilities. Time-delay and current-limiting characteristics provide controlled inrush handling and fast fault interruption, improving coordination with upstream protective devices and enabling safer motor start sequences in motor control centers. The Class RK1 designation ensures compatibility with Bussmann series components and standard panelboard configurations, simplifying stock management and replacement planning. Nickel-plated caps offer enhanced corrosion resistance in damp or slightly aggressive environments, extending service life and reducing replacement costs over time. Non-indicating design minimizes visual clutter in crowded switchgear and supports straightforward field testing and maintenance checks. Packaging type is Standard, helping procurement teams achieve consistent ordering and lead times across large projects.
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FAQs
For panelboard installations, ensure compatibility with Bussmann series fuse holders and standard RK1 configurations. Verify the 45 A amperage rating aligns with feeder load and coordination requirements. The nickel-plated caps improve durability in typical industrial environments, and the non-indicating design simplifies visual inspection during routine maintenance.
Key specs include a 45 A amperage rating, Class RK1 protection, time-delay characteristics, and current-limiting capability. The fuse is designed for large distribution switchboards, power panelboards, and motor control centers, with nickel-plated caps and standard packaging to ease procurement and replacement in centralized electrical rooms.
Yes. The 45 A rating combined with time-delay and current-limiting features makes it suitable for MCC protection, where controlled inrush suppression and selective fault interruption are critical. It integrates with standard Bussmann RK1 components, streamlining assembly and maintenance within MCC assemblies.
Certification details are market-specific. Confirm with Eaton for the exact documentation, including CE, UL, or IEC-related certifications applicable in your region. The product is cataloged as Class RK1 with standard protection features, and Eaton provides official certification data on request.
The fuse offers reduced nuisance trips due to time-delay characteristics, improved protection coordination, and longer service life from nickel-plated caps. Standard packaging supports efficient procurement, lowering inventory complexity and downtime during replacements, which collectively contribute to lower maintenance costs and higher system uptime.