BK/MDA-V-3-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The BK/MDA-V-3-R is a 3 A, 250 V AC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This through-hole mounted fuse is designed for general-purpose circuit protection in AC applications and operates with slow-blow response characteristics. The part is currently active in production with 948 pieces in stock.

Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, enabling direct replacement in circuit protection applications without design modification.

Substiute Parts

BK/MDA-V-3-R

Eaton - Electronics DivisionIn Stock: 1036BK/MDA-V-3-R Datasheet

Current PartRFQ

0325003.HXP

Littelfuse Inc.In Stock: 12150325003.HXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/MDA-V-3-R is determined by the following critical parameters:

Primary Electrical Criteria:

• Current Rating: 3 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Response Time: Slow Blow (exact match required)

Mechanical Criteria:

• Fuse Type: Cartridge, Ceramic (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)

Compliance Criteria:

• Approval Agency: Must include CE, CSA, and UL certifications
• RoHS Status: ROHS3 Compliant (required)

The substitute part 0325003.HXP meets all primary electrical criteria, mechanical specifications, and compliance requirements. Additional DC voltage rating and enhanced breaking capacity in the substitute part do not disqualify it from substitution, as these represent equal or superior performance characteristics within the same product category.

Parameter Comparison

Engineering Selection Recommendations

The 0325003.HXP from Littelfuse Inc. is a qualified substitute for the BK/MDA-V-3-R based on matching electrical ratings, mechanical form factor, and regulatory compliance.

Compliance Alignment: Both parts carry CE, CSA, and UL certifications and are ROHS3 compliant, meeting the same regulatory framework. The substitute part includes additional certifications (K-MARK, PSE) that extend its applicability to additional markets without compromising the original application requirements.

Electrical Equivalence: The 3 A, 250 V AC slow-blow ceramic cartridge fuse specification is identical between both parts. The substitute part includes a 125 V DC rating, which does not conflict with AC-only applications and provides expanded functionality for dual-voltage systems.

Mechanical Compatibility: Both parts use the 3AB, 3AG form factor with through-hole mounting. Dimensional variations (0.266" vs. 0.275" diameter; 1.292" vs. 1.288" length) fall within standard mechanical tolerances for this fuse category and do not prevent direct socket compatibility.

Product Status: Both parts are active in production with adequate inventory availability (948 pieces for BK/MDA-V-3-R; 1129 pieces for 0325003.HXP), ensuring supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the 0325003.HXP replace the BK/MDA-V-3-R in an AC-only circuit?

A: Yes. The 0325003.HXP meets all AC electrical specifications (3 A, 250 V) and mechanical requirements. The additional 125 V DC rating does not affect AC performance and does not disqualify the part from substitution.

Q: Are there dimensional differences that affect socket compatibility?

A: Dimensional variations exist (diameter: 0.266" vs. 0.275"; length: 1.292" vs. 1.288"). These differences are within standard mechanical tolerances for 3AB, 3AG cartridge fuses and do not prevent direct socket compatibility in standard fuse holders.

Q: Do both parts carry the same regulatory certifications?

A: Both parts carry CE, CSA, and UL certifications. The 0325003.HXP includes additional certifications (K-MARK, PSE) that extend market applicability without affecting the core AC circuit protection function.

Q: What is the difference in melting I²t values between the two parts?

A: The BK/MDA-V-3-R has a melting I²t of 12.1, while the 0325003.HXP has a melting I²t of 200. Both parts are rated for 3 A slow-blow response. The higher I²t value in the substitute part indicates greater thermal capacity, which is compatible with slow-blow fuse applications.

Q: Can the substitute part be used in new designs?

A: Yes. The 0325003.HXP meets all electrical, mechanical, and compliance requirements for the BK/MDA-V-3-R specification and is suitable for both replacement and new design applications.

Q: What is the inventory status for both parts?

A: BK/MDA-V-3-R: 948 pieces in stock. 0325003.HXP: 1129 pieces in stock. Both parts are available for immediate procurement.