MDA-3-2/10-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The MDA-3-2/10-R is a 3.2 A ceramic fuse cartridge rated for 250 V AC/DC operation, manufactured by Eaton - Electronics Division. This slow-blow fuse is designed for applications requiring holder-based installation in 3AB and 3AG configurations with 1/4" x 1-1/4" dimensions. The part maintains Active product status with 989 pieces in current inventory. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and component availability across manufacturing environments.

Substiute Parts

MDA-3-2/10-R

Eaton - Electronics DivisionIn Stock: 1054MDA-3-2/10-R Datasheet

Current PartRFQ

BK/MDA-3-2/10-R

Eaton - Electronics DivisionIn Stock: 967BK/MDA-3-2/10-R Datasheet

Parametric EquivalentRFQ

032603.2HXP

Littelfuse Inc.In Stock: 1171032603.2HXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MDA-3-2/10-R are identified based on strict electrical and mechanical parameter alignment. The substitution criteria are:

Primary Matching Parameters:

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

Substitution Groups:

Group 1: Parametric Equivalent (Same Manufacturer) BK/MDA-3-2/10-R from Eaton - Electronics Division matches all primary electrical and mechanical parameters with identical specifications across current rating, voltage, fuse type, response time, package configuration, and physical dimensions.

Group 2: Direct Manufacturer Equivalent (Cross-Manufacturer) 032603.2HXP from Littelfuse Inc. matches all primary electrical and mechanical parameters. This part provides cross-manufacturer equivalency with identical current rating, voltage rating, fuse type, response time, package configuration, and physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

MDA-3-2/10-R (Primary Part) Select this part as the primary choice when Eaton - Electronics Division sourcing is specified or preferred. The part maintains Active product status with established supply (989 pieces in inventory). Certifications include CE, CSA, and UL compliance.

BK/MDA-3-2/10-R (Parametric Equivalent) This Eaton - Electronics Division variant provides identical electrical and mechanical specifications to the primary part. Use this substitute when the primary part number is unavailable. Both parts share the same manufacturer, series designation, and compliance certifications. Current inventory is 886 pieces.

032603.2HXP (Cross-Manufacturer Equivalent) This Littelfuse Inc. part provides cross-manufacturer equivalency with matching electrical and mechanical parameters. The part is suitable for applications where multi-source qualification is required or when Littelfuse components are preferred in the design. This part carries expanded approval certifications including K-MARK and PSE in addition to CE, CSA, and UL. Current inventory is 1062 pieces. Note that DC Cold Resistance (0.0539 Ohms) and Melting I²t (214) differ from the Eaton parts, and Breaking Capacity is specified at 100A.

All three parts are ROHS3 compliant and maintain Active product status.

Frequently Asked Questions (FAQ)

Q: Can BK/MDA-3-2/10-R be used as a direct replacement for MDA-3-2/10-R? A: Yes. BK/MDA-3-2/10-R is a parametric equivalent with identical current rating (3.2 A), voltage rating (250 V), fuse type (Cartridge, Ceramic), response time (Slow Blow), package configuration (3AB, 3AG, 1/4" x 1-1/4"), and physical dimensions (0.250" Dia x 1.250" L). Both parts are manufactured by Eaton - Electronics Division and carry the same certifications.

Q: What are the differences between the Eaton MDA series and the Littelfuse 032603.2HXP? A: Both parts match on all primary electrical and mechanical parameters: 3.2 A current rating, 250 V AC voltage rating, ceramic cartridge fuse type, slow-blow response, and 3AB/3AG package configuration. Differences include DC Cold Resistance (Eaton: 0.045 Ohms vs. Littelfuse: 0.0539 Ohms), Melting I²t (Eaton: 17.5 vs. Littelfuse: 214), and Breaking Capacity specification (Littelfuse specifies 100A; Eaton does not specify). Littelfuse carries additional certifications (K-MARK, PSE).

Q: Are all three parts compatible with the same holder? A: Yes. All three parts use the 3AB and 3AG package configuration with identical physical dimensions of 0.250" Dia x 1.250" L (6.35mm x 31.75mm), requiring the same holder type for installation.

Q: Which part should be selected for new designs? A: Selection depends on sourcing strategy and design requirements. MDA-3-2/10-R is the primary part with established Eaton sourcing. BK/MDA-3-2/10-R provides equivalent performance from the same manufacturer. 032603.2HXP is suitable when multi-source qualification or Littelfuse component preference is required, and offers expanded geographic certifications.

Q: Are all parts RoHS compliant? A: Yes. All three parts are ROHS3 compliant and maintain Active product status.