LPS-RK-50SP Equivalent & Substitute Parts

Part Overview

The LPS-RK-50SP is a low-peak dual element fuse manufactured by Eaton - Bussmann Electrical Division. This component is classified as a fuse cartridge designed for electrical and industrial applications. The part maintains active product status and is RoHS compliant, making it suitable for modern electronic systems requiring regulatory compliance. Identifying equivalent substitute parts is necessary to ensure supply chain continuity, optimize inventory management, and maintain operational flexibility when the primary part becomes unavailable.

Substiute Parts

LPS-RK-50SP

Eaton - Bussmann Electrical DivisionIn Stock: 985LPS-RK-50SP Datasheet

Current PartRFQ

LSRK050.T

Littelfuse Inc.In Stock: 827LSRK050.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LPS-RK-50SP are identified based on the following critical parameters that determine functional equivalence:

• Fuse Type & Function: Low-peak dual element cartridge fuse
• Current Rating: 50A nominal capacity
• Voltage Rating: 600 VAC / 300 VDC operating range
• Response Characteristic: Slow blow (time-delay) operation
• Class Rating: RK1 classification
• Physical Form Factor: Cartridge configuration requiring holder
• Regulatory Compliance: RoHS compliance and international certifications (CE, CSA, UL)

The LSRK050.T from Littelfuse Inc. meets these substitution criteria through matching electrical specifications, identical current and voltage ratings, equivalent response time classification, and comparable regulatory approvals.

Parameter Comparison

Engineering Selection Recommendations

Both the LPS-RK-50SP and LSRK050.T maintain active product status, ensuring continued manufacturer support and availability. The LSRK050.T carries ROHS3 compliance, which represents an enhanced regulatory standard compared to standard RoHS compliance. Both parts share identical ECCN and HTSUS classifications, indicating equivalent export control and tariff treatment.

The LSRK050.T includes documented approval agencies (CE, CSA, QPL, UL) and specified breaking capacity ratings (200kA AC, 20kA DC), providing additional technical documentation for system design validation. Both components are classified as cartridge fuses requiring holder mounting, ensuring mechanical compatibility in existing installations.

Selection between these parts should be based on supply availability, inventory status, and specific system certification requirements. The LSRK050.T from Littelfuse represents a qualified substitute meeting all critical electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: What makes the LSRK050.T a valid substitute for the LPS-RK-50SP?

A: Both parts share identical current ratings (50A), matching fuse type (cartridge), equivalent response characteristics (slow blow / dual element), and compatible voltage operating ranges. Both maintain active product status and RoHS compliance, with identical ECCN and HTSUS classifications.

Q: Are there physical dimension differences between these parts?

A: The LSRK050.T is specified as 1.063" Dia x 5.500" L (27.00mm x 139.70mm). Dimension specifications for the LPS-RK-50SP were not provided in the input data. Physical verification is necessary before installation in space-constrained applications.

Q: Do both parts require the same holder configuration?

A: Both parts are cartridge fuses requiring holder mounting. The LSRK050.T is documented as requiring a holder. Compatibility depends on the specific holder model used in the application.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both represent RoHS compliance standards. The LSRK050.T carries ROHS3 designation, indicating compliance with the most current RoHS directive requirements. Both parts meet hazardous substance restrictions for modern electronic systems.

Q: Are these parts suitable for both AC and DC applications?

A: The LSRK050.T is rated for 600 VAC and 300 VDC operation. Voltage specifications for the LPS-RK-50SP were not provided in the input data. Application suitability must be verified against specific system voltage requirements.

Q: What certifications apply to the LSRK050.T?

A: The LSRK050.T carries CE, CSA, QPL, and UL approvals, providing compliance documentation for industrial and electrical applications across multiple regulatory jurisdictions.