SCHURTER 7025.5140 Equivalent & Substitute Parts

Part Overview

The SCHURTER 7025.5140 is a 6A ceramic cartridge fuse rated for 500VAC and 250VDC operation. This component belongs to the MAT series and features slow-blow response characteristics suitable for circuit protection in industrial and electrical applications. The part is classified as obsolete, making identification of compatible substitute components essential for system maintenance and new design implementations where equivalent protection specifications are required.

Substiute Parts

7025.5140

SCHURTER Inc.In Stock: 8837025.5140 Datasheet

Current PartRFQ

LNRK006.T

Littelfuse Inc.In Stock: 1165LNRK006.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 7025.5140 is determined by the following critical parameters:

Current Rating: Both the main part and substitute must maintain 6A nominal current protection.

Fuse Type & Mounting: Cartridge-style fuses requiring holder mounting are interchangeable based on physical dimensions and electrical interface compatibility.

Response Characteristic: Slow-blow response must be preserved to maintain circuit protection behavior consistent with the original design.

Voltage Ratings: The substitute LNRK006.T operates at 250VAC and 125VDC, which represents a reduced voltage specification compared to the main part's 500VAC and 250VDC ratings. This substitution is valid only in applications where the actual operating voltage does not exceed the substitute's rated values.

Physical Dimensions: Cartridge diameter and length must be compatible with existing fuse holders. The LNRK006.T dimensions (0.563" Dia x 2.000" L) are within acceptable tolerance for standard cartridge fuse holders designed for the 14mm x 50mm form factor.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse LNRK006.T serves as an active substitute for the obsolete SCHURTER 7025.5140 based on matching current rating, fuse type, response characteristic, and cartridge form factor. The LNRK006.T is classified as active product status with ROHS3 compliance and multiple international approvals (CE, CSA, QPL, UL), providing regulatory advantages over the non-compliant main part.

The primary consideration for substitution is voltage rating. The LNRK006.T is rated for 250VAC and 125VDC, compared to the main part's 500VAC and 250VDC specifications. This substitute is suitable only for applications where the actual circuit voltage remains within or below the LNRK006.T ratings. Applications requiring the full 500VAC or 250VDC capability of the original part cannot use this substitute without circuit redesign or voltage reduction measures.

The LNRK006.T demonstrates superior breaking capacity (200kA AC, 20kA DC) relative to the main part, providing enhanced fault current handling capability. Physical dimensions are compatible with standard cartridge fuse holders, though minor dimensional variations exist within acceptable mechanical tolerance.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse LNRK006.T directly replace the SCHURTER 7025.5140 in all applications?

A: Direct replacement is valid only in applications where the operating voltage does not exceed 250VAC or 125VDC. If the circuit operates at the full 500VAC or 250VDC rating of the original part, the substitute cannot be used without circuit modification.

Q: What are the physical compatibility considerations?

A: Both fuses use the standard cartridge form factor and require holder mounting. Dimensional differences (0.551" vs 0.563" diameter, 1.969" vs 2.000" length) are within acceptable tolerance for standard fuse holders. Verify holder specifications to confirm mechanical fit.

Q: How do the breaking capacities compare?

A: The LNRK006.T provides higher breaking capacity (200kA AC, 20kA DC) compared to the SCHURTER part (100kA AC, 10kA DC). This represents improved fault current handling and does not restrict substitution from a breaking capacity perspective.

Q: What compliance advantages does the substitute offer?

A: The LNRK006.T is ROHS3 compliant and carries CE, CSA, QPL, and UL approvals. The original SCHURTER part is RoHS non-compliant. For new designs or systems requiring regulatory compliance, the substitute provides certification advantages.

Q: Are the response characteristics identical?

A: Both fuses are specified as slow-blow type, maintaining consistent circuit protection behavior. Response time characteristics are preserved in the substitution.