Equivalent & Substitute Parts for MDQ-3-2/10

Part Overview

The Eaton MDQ-3-2/10 is a 3.2 A, 250 V AC/DC glass cartridge fuse with slow-blow response characteristics. This fuse is designed for use in 3AB and 3AG holders with dimensions of 1/4" x 1-1/4" (6.35mm x 31.75mm). The part maintains active product status with 651 pieces currently in stock.

Substitute parts are necessary when the primary MDQ-3-2/10 becomes unavailable due to supply constraints, when alternative manufacturers are preferred for procurement diversity, or when specific compliance certifications are required for particular applications.

Substiute Parts

MDQ-3-2/10

Eaton - Electronics DivisionIn Stock: 761MDQ-3-2/10 Datasheet

Current PartRFQ

BK/MDL-3-2/10-R

Eaton - Electronics DivisionIn Stock: 908BK/MDL-3-2/10-R Datasheet

Parametric EquivalentRFQ

BK/MDQ-3-2/10

Eaton - Electronics DivisionIn Stock: 976BK/MDQ-3-2/10 Datasheet

Parametric EquivalentRFQ

0034.5237

SCHURTER Inc.In Stock: 14720034.5237 Datasheet

Parametric EquivalentRFQ

031303.2HXP

Littelfuse Inc.In Stock: 1012031303.2HXP Datasheet

Parametric EquivalentRFQ

031303.2MXP

Littelfuse Inc.In Stock: 2300031303.2MXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDQ-3-2/10 is determined by strict equivalence across the following parameters:

• Current Rating: 3.2 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm) (exact match required)
• Mounting Type: Requires Holder (exact match required)

All substitute parts listed meet these criteria and are therefore electrically and mechanically interchangeable with the MDQ-3-2/10 in applications requiring these exact specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Eaton Manufacturer):

BK/MDL-3-2/10-R and BK/MDQ-3-2/10 are both active Eaton products that maintain full electrical and mechanical equivalence to the MDQ-3-2/10. These parts are recommended when continuity with the original manufacturer is required or preferred. BK/MDQ-3-2/10 offers the highest inventory availability at 956 pieces.

Secondary Substitutes (Active Status, Alternative Manufacturers):

031303.2HXP and 031303.2MXP are Littelfuse Inc. products with active status. Both parts carry comprehensive approval certifications including CE, CSA, K-MARK, PSE, and UL. These parts are suitable for applications requiring multi-agency compliance. 031303.2MXP provides the highest inventory level at 2215 pieces among all substitute options.

Tertiary Substitute (Obsolete Status):

0034.5237 from SCHURTER Inc. is classified as obsolete and should be selected only when existing inventory must be maintained or when legacy system compatibility is specifically required. This part carries CSA and UL approvals.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the MDQ-3-2/10?

A: Yes. All listed substitute parts meet the identical electrical and mechanical specifications: 3.2 A current rating, 250 V AC voltage rating, slow-blow response, cartridge glass fuse type, and 3AB/3AG package dimensions of 1/4" x 1-1/4". Direct substitution is electrically and mechanically valid.

Q: What is the difference between the Eaton MDQ and MDL series fuses?

A: Both series meet the same electrical and mechanical parameters for this 3.2 A, 250 V application. The MDL series (represented by BK/MDL-3-2/10-R) is an alternative product line within Eaton's portfolio. Selection between series is based on procurement preference or availability rather than functional differences.

Q: Are the Littelfuse 031303.2HXP and 031303.2MXP parts identical?

A: Both Littelfuse parts are electrically and mechanically equivalent for this application. Both carry identical current rating, voltage rating, response time, and package specifications. Both are active products with comprehensive multi-agency certifications. Selection between them is based on inventory availability or procurement preference.

Q: Why is the SCHURTER 0034.5237 listed as obsolete?

A: The 0034.5237 is classified as obsolete by the manufacturer. Despite obsolete status, it remains electrically and mechanically equivalent to the MDQ-3-2/10 and is listed as a substitute for applications requiring legacy component compatibility or existing inventory management.

Q: What holder types are compatible with these fuses?

A: All listed fuses require a holder and are compatible with 3AB and 3AG holder types. The physical dimensions of 1/4" diameter x 1-1/4" length (6.35mm x 31.75mm) are standardized across all substitute parts.

Q: Do all substitute parts have the same approval certifications?

A: No. The MDQ-3-2/10 carries CSA and UL approvals. The Littelfuse parts (031303.2HXP and 031303.2MXP) carry CE, CSA, K-MARK, PSE, and UL approvals. The SCHURTER 0034.5237 carries CSA and UL approvals. Applications requiring specific certifications should verify compliance with the selected substitute part.

Q: Which substitute part has the best inventory availability?

A: The Littelfuse 031303.2MXP offers the highest inventory level at 2215 pieces, followed by the SCHURTER 0034.5237 at 1437 pieces and the Eaton BK/MDQ-3-2/10 at 956 pieces.