LPS-RK-300SP-TP Equivalent & Substitute Parts

Part Overview

The LPS-RK-300SP-TP is a CLASS RK1 tin-plated fuse manufactured by Eaton - Bussmann Electrical Division. This component is classified as an active product with RoHS compliance status. Fuses of this specification are critical protective devices in electrical and industrial applications requiring 300A current protection at 600VAC/300VDC ratings. Substitute parts may be required due to inventory availability, supply chain considerations, or specific application requirements while maintaining equivalent electrical and mechanical performance.

Substiute Parts

LPS-RK-300SP-TP

Eaton - Bussmann Electrical DivisionIn Stock: 1219LPS-RK-300SP-TP Datasheet

Current PartRFQ

LSRK300.X

Littelfuse Inc.In Stock: 1141LSRK300.X Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LPS-RK-300SP-TP is determined by strict alignment of the following electrical and mechanical parameters:

• Fuse Class: RK1 classification ensures compatible breaking capacity and response characteristics
• Current Rating: 300A nominal rating for equivalent load protection
• Voltage Rating - AC: 600 VAC minimum requirement
• Voltage Rating - DC: 300 VDC minimum requirement
• Response Time: Slow Blow characteristic for industrial application compatibility
• Regulatory Compliance: RoHS compliance and recognized approval agencies (UL, CSA, CE)

The substitute part LSRK300.X meets all specified electrical parameters and maintains equivalent functional performance within the RK1 fuse class category.

Parameter Comparison

Engineering Selection Recommendations

Both the LPS-RK-300SP-TP and LSRK300.X are active products with current RoHS compliance certifications. The LSRK300.X substitute provides documented approval agency certifications (UL, CSA, CE, QPL) and specified breaking capacity ratings (200kA AC, 20kA DC), which may be advantageous for applications requiring explicit regulatory documentation. Both parts maintain identical electrical specifications: 300A current rating, 600 VAC/300 VDC voltage ratings, RK1 class designation, and slow-blow response characteristics. Selection between these parts should be based on availability, packaging requirements (bulk versus box), and specific regulatory documentation needs for the end application.

Frequently Asked Questions (FAQ)

Q: Can LSRK300.X be used as a direct replacement for LPS-RK-300SP-TP?

A: Yes. Both parts share identical electrical specifications: RK1 class, 300A current rating, 600 VAC/300 VDC voltage ratings, and slow-blow response time. These parameters define functional equivalence for fuse substitution.

Q: What is the significance of RK1 class designation?

A: RK1 class fuses are designed for industrial and commercial electrical systems. This classification specifies breaking capacity, response characteristics, and physical dimensions. Both parts maintain RK1 compliance, ensuring compatible performance in existing fuse holders and circuits.

Q: Are there packaging differences between these parts?

A: Yes. The LPS-RK-300SP-TP is supplied in bulk packaging, while LSRK300.X is supplied in box packaging. Both are cylindrical cartridge fuses requiring a holder for installation. Packaging format does not affect electrical performance or substitution eligibility.

Q: What does "Slow Blow" response time mean?

A: Slow Blow fuses tolerate temporary current surges before opening the circuit. This characteristic is essential for industrial applications with inductive loads or motor startup transients. Both substitute parts maintain this response time specification.

Q: Are both parts RoHS compliant?

A: Yes. LPS-RK-300SP-TP is RoHS Compliant, and LSRK300.X is ROHS3 Compliant. Both meet current RoHS requirements for hazardous substance restrictions.