Eaton LPS-RK-90SP-TP Fuse - Class RK1, Tin-Plated
Part Number: LPS-RK-90SP-TP
Quick Summary
The LPS-RK-90SP-TP fuse from Eaton provides reliable overcurrent protection for motor control centers. Designers and maintenance teams often battle nuisance trips and difficult replacement in large distribution switchboards. It is designed with Class RK1 designation, time-delay characteristics, current-limiting performance, and RoHS compliance to support safe, regulatory-aligned protection. Tin-plated construction and electrically isolated end caps simplify installation and enhance long-term reliability, reducing maintenance and lifecycle costs. The 90 A rating fits large panels and MCCs, enabling scalable protection while simplifying procurement and spares strategy. This makes Eaton Bussmann series LPS-RK fuses a practical choice for industrial power protection programs and modernization projects.
Product Information
Extended Description
LPS-RK-90SP-TP Eaton: Eaton Bussmann series LPS-RK fuse, Low-peak fuse, Large distribution switchboards, Power panelboards, Motor control centers, 90 A, Class RK1, Non-indicating, Time delay, Current-limiting, Tin-plated
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-90SP-TP
UPC
051712752404
Product Length/Depth
7.88 in
Product Height
1.11 in
Product Width
1.11 in
Product Weight
4 lb
Warranty
Not Applicable
Compliances
RoHS Compliant
Amperage Rating
90 A
Fuse type
Time delay Current-limiting
Material
Tin-plated
Class
Class RK1
Fuse indicator
Non-indicating
Special features
Electrically isolated end cap
LPS-RK-90SP-TP~CLASS RK1 FUSE TIN PLATED
LPS-RK-90SP-TP~CLASS RK1 FUSE TIN PLATED
Bussmann series Fuseology
Eaton Specification Sheet - LPS-RK-90SP-TP
Feature: Time-delay, current-limiting operation. Business Impact: Reduces arc-flash energy and limits fault current to protect upstream equipment, enhancing system uptime. Application: Suitable for motor control centers and large distribution switchboards where selective coordination is required. Feature: Tin-plated ends. Business Impact: Improves conductivity and corrosion resistance, extending fuse life in demanding environments. Application: Harsh industrial settings and long-term installations where reliability matters. Feature: Class RK1, non-indicating. Business Impact: Provides a standardized protection class with straightforward replacement and clear coordination with protective relays. Application: Large panel assemblies and power distribution schemes needing alignment with RK1 standards. Feature: Electrically isolated end cap. Business Impact: Safer field installation and reduced risk of incidental contact during maintenance. Application: Panel assembly and MCC maintenance where safe servicing is critical. Feature: RoHS compliant. Business Impact: Supports regulatory compliance and sustainability goals, reducing compliance risk. Application: Global industrial deployments with environmental standards. Feature: 90 A amperage rating, 7.88 in length, 1.11 in width. Business Impact: Enables precise sizing for common MCC and panelboard configurations, streamlining design and inventory. Application: Medium to large switchgear where standard 90 A fuses are required. The combination of these features delivers improved protection coordination, lower total cost of ownership, and faster deployment in new builds or retrofits.
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FAQs
Install the LPS-RK-90SP-TP fuse into compatible RK1 fuse holders within the MCC framework. Confirm the amperage rating (90 A) matches the design current, ensure the fuse ends are clean and tin-plated contacts are properly seated, and verify the electrically isolated end caps are secure. Follow standard safety procedures and panel manufacturer guidelines during replacement to maintain protective coordination.
Class RK1 denotes a standardized fuse class used in power distribution to ensure predictable performance and coordination with upstream protection. Current-limiting means the fuse rapidly reduces peak fault current, limiting energy transferred to protected equipment and reducing damage risk. This combination supports selective protection in MCCs and large switchboards, improving uptime and reducing downstream wear.
Yes. With a 90 A rating, long-form body suitable for large panels, tin-plated ends for reliable contact, and time-delay characteristics, it is well-suited for distribution switchboards and motor control centers. Its RoHS compliance also supports regulatory requirements across multiple regions, simplifying procurement for global projects.
The fuse is RoHS compliant and designated as Class RK1. It features a non-indicating fuse indicator, tin-plated material, and electrically isolated end caps for safer installations. These attributes support compliance with industry protection standards and enhance installation safety in industrial environments.
The electrically isolated end caps simplify field replacement and reduce handling risk, while tin-plated ends improve contact reliability over time. The 90 A rating matches common MCC designs, reducing spare-part variety. Overall, these factors translate to shorter downtime during maintenance and lower lifecycle costs through improved durability and easier procurement.