BK/MDA-25A-R Ceramic Fuse Cartridge Equivalent & Substitute Parts

Part Overview

The BK/MDA-25A-R is a 25 A ceramic fuse cartridge rated for 250 V AC and 125 V DC operation. This slow-blow cartridge fuse requires a compatible holder (3AB, 3AG format) and is designed for circuit protection in industrial and commercial applications. The part is manufactured by Eaton - Electronics Division and is currently active in production. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and regulatory compliance standards.

Substiute Parts

BK/MDA-25A-R

Eaton - Electronics DivisionIn Stock: 837BK/MDA-25A-R Datasheet

Current PartRFQ

BK/MDA-25-R

Eaton - Electronics DivisionIn Stock: 1574BK/MDA-25-R Datasheet

DirectRFQ

MDA-25-R

Eaton - Electronics DivisionIn Stock: 838MDA-25-R Datasheet

Parametric EquivalentRFQ

0326025.HXP

Littelfuse Inc.In Stock: 11140326025.HXP Datasheet

Parametric EquivalentRFQ

0326025.MXP

Littelfuse Inc.In Stock: 22350326025.MXP Datasheet

Parametric EquivalentRFQ

0326025.VXP

Littelfuse Inc.In Stock: 12750326025.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/MDA-25A-R is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Current Rating: 25 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required)
• Response Time: Slow Blow (exact match required)

Mechanical Parameters:

• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Size / Dimension: 0.250" Dia x 1.250" L (exact match required)
• Mounting Type: Requires Holder (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (minimum requirement)
• Fuse Type: Cartridge, Ceramic (exact match required)

All substitute parts listed meet these criteria and are interchangeable within the same circuit protection application. Substitutes are grouped by manufacturer: Eaton - Electronics Division variants and Littelfuse Inc. variants.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are functionally equivalent to the BK/MDA-25A-R and are suitable for direct replacement in circuit protection applications requiring 25 A ceramic fuse cartridges with 250 V AC / 125 V DC ratings.

Eaton - Electronics Division Variants (BK/MDA-25-R, MDA-25-R): These parts maintain identical electrical and mechanical specifications to the main part number. Both variants are active products with full CE, CSA, and UL compliance. Selection between these Eaton variants is based on packaging preference (bulk) and inventory availability.

Littelfuse Inc. Variants (0326025.HXP, 0326025.MXP, 0326025.VXP): These parts provide equivalent electrical performance and mechanical compatibility. Littelfuse variants carry expanded regulatory approvals including K-MARK and PSE certifications, providing broader geographic compliance coverage. All three Littelfuse variants are active products with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Selection among substitute parts should be based on:

• Manufacturer preference and supply chain requirements
• Regulatory compliance scope for target markets
• Inventory availability and lead time considerations
• Packaging format requirements (all listed parts are available in bulk packaging)

Frequently Asked Questions (FAQ)

Q: Can BK/MDA-25-R be used as a direct replacement for BK/MDA-25A-R?

A: Yes. BK/MDA-25-R is a direct equivalent with identical electrical ratings (25 A, 250 V AC, 125 V DC), response time (Slow Blow), mechanical dimensions (0.250" Dia x 1.250" L), and package format (3AB, 3AG). Both are manufactured by Eaton - Electronics Division and carry the same regulatory approvals.

Q: Are Littelfuse 0326025 series fuses compatible with Eaton MDA series holders?

A: Yes. All Littelfuse variants (0326025.HXP, 0326025.MXP, 0326025.VXP) share identical mechanical dimensions and package specifications (3AB, 3AG, 1/4" x 1-1/4") with Eaton MDA series fuses. They are mechanically and electrically interchangeable within the same holder.

Q: What is the difference between 0326025.HXP, 0326025.MXP, and 0326025.VXP?

A: All three Littelfuse variants meet the same electrical and mechanical specifications for 25 A ceramic fuse cartridges. The designations (HXP, MXP, VXP) represent different product lines within the Littelfuse 326 series. Selection should be based on availability, supply chain requirements, and specific application certifications needed.

Q: Do all substitute parts have the same breaking capacity?

A: No. Eaton variants (BK/MDA-25A-R, BK/MDA-25-R, MDA-25-R) have a breaking capacity of 1.5kA AC and 10kA DC. Littelfuse variants (0326025.HXP, 0326025.MXP, 0326025.VXP) have a breaking capacity of 400A AC and 600A DC. Both ratings are suitable for standard circuit protection applications; selection depends on specific fault current requirements of the application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts, including the main part number BK/MDA-25A-R, are ROHS3 compliant and suitable for applications requiring environmental compliance.

Q: What regulatory approvals do the Littelfuse variants provide?

A: Littelfuse 0326025.HXP and 0326025.MXP carry CE, CSA, K-MARK, PSE, and UL approvals. Littelfuse 0326025.VXP carries CE, CSA, PSE, and UL approvals. Eaton variants carry CE, CSA, and UL approvals. Selection should be based on target market regulatory requirements.

Q: Can these fuses be used in both AC and DC circuits?

A: Yes. All listed parts are rated for both AC and DC operation: 250 V AC and 125 V DC. The fuse holder and circuit design must accommodate both voltage ratings.