LPS-RK-50SPI Equivalent & Substitute Parts

Part Overview

The LPS-RK-50SPI is an indicating fuse manufactured by Eaton - Bussmann Electrical Division, classified as a cartridge fuse designed for electrical and industrial applications. This component is currently active in production and maintains RoHS compliance. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory constraints require component alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

LPS-RK-50SPI

Eaton - Bussmann Electrical DivisionIn Stock: 1124LPS-RK-50SPI Datasheet

Current PartRFQ

LSRK050.T

Littelfuse Inc.In Stock: 827LSRK050.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LPS-RK-50SPI is based on the following electrical and mechanical parameters:

• Current Rating: 50A
• Voltage Rating: 600 VAC / 300 VDC
• Fuse Type: Cartridge
• Response Time: Slow Blow
• Class: RK1
• Physical Form Factor: Cartridge configuration requiring holder
• Regulatory Compliance: RoHS compliance and international certifications (CE, CSA, UL)

The substitute part LSRK050.T from Littelfuse Inc. meets these core parameters and is therefore classified as an equivalent component for the LPS-RK-50SPI.

Parameter Comparison

Engineering Selection Recommendations

Both the LPS-RK-50SPI and LSRK050.T maintain active product status with current manufacturing support. Both components are RoHS compliant and classified under identical ECCN and HTSUS codes, confirming regulatory equivalence for export and tariff purposes. The LSRK050.T carries additional international certifications including CE, CSA, and UL approval, providing expanded compliance documentation for applications requiring third-party validation. Selection between these components should be based on availability, packaging requirements (bulk versus box), and specific certification requirements of the end application.

Frequently Asked Questions (FAQ)

Q: Can LSRK050.T be used as a direct replacement for LPS-RK-50SPI?

A: Yes, the LSRK050.T is electrically and mechanically equivalent based on the provided specifications. Both are 50A cartridge fuses with identical current ratings and voltage specifications. Verify that the application circuit accommodates the cartridge form factor and holder requirements.

Q: What is the difference in packaging between these parts?

A: The LPS-RK-50SPI is supplied in bulk packaging, while the LSRK050.T is supplied in box packaging. This affects order quantities and storage considerations but does not impact electrical performance or compatibility.

Q: Are there compliance differences between these components?

A: Both parts are RoHS compliant and carry the same ECCN and HTSUS classifications. The LSRK050.T includes documented CE, CSA, and UL certifications. Applications requiring specific third-party approvals should reference the LSRK050.T documentation.

Q: What mounting configuration is required for these fuses?

A: Both components are cartridge fuses that require a dedicated fuse holder for installation. The physical dimensions of the LSRK050.T (1.063" Dia x 5.500" L) define the holder compatibility requirements.

Q: Is there a difference in response time between these parts?

A: The LSRK050.T is specified as slow blow. Confirm that the LPS-RK-50SPI response time matches the application requirements before substitution.