MDA-30-R Ceramic Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The MDA-30-R is a 30 A ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 250 V AC and 125 V DC operation. This slow-blow fuse is designed for applications requiring circuit protection in industrial and commercial equipment. The part is currently active in production with 772 pieces in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications utilizing the 3AB, 3AG form factor (1/4" x 1-1/4" dimensions).

Substiute Parts

MDA-30-R

Eaton - Electronics DivisionIn Stock: 790MDA-30-R Datasheet

Current PartRFQ

BK/MDA-30-R

Eaton - Electronics DivisionIn Stock: 2544BK/MDA-30-R Datasheet

DirectRFQ

0326030.HXP

Littelfuse Inc.In Stock: 7610326030.HXP Datasheet

SimilarRFQ

0326030.MXP

Littelfuse Inc.In Stock: 24550326030.MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDA-30-R is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 30 A
• Voltage Rating - AC: 250 V
• Voltage Rating - DC: 125 V
• Fuse Type: Cartridge, Ceramic
• Response Time: Slow Blow
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
• Physical Dimensions: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)
• Mounting Type: Requires Holder

All identified substitute parts meet these mandatory parameters. Variations in secondary parameters such as breaking capacity, melting I²t, DC cold resistance, and operating temperature range do not disqualify substitution when primary electrical and mechanical specifications are identical.

Parameter Comparison

Engineering Selection Recommendations

Direct Manufacturer Equivalent: BK/MDA-30-R is a direct equivalent manufactured by Eaton - Electronics Division. This part carries identical electrical specifications, mechanical dimensions, and certifications (CE, CSA, UL) as the MDA-30-R. Selection of BK/MDA-30-R provides continuity with the original manufacturer while offering higher inventory availability (2475 pieces versus 772 pieces).

Cross-Manufacturer Substitutes: The Littelfuse parts 0326030.HXP and 0326030.MXP are functionally equivalent substitutes. Both parts satisfy all mandatory electrical and mechanical parameters. The Littelfuse series carries expanded regulatory approvals (K-MARK, PSE in addition to CE, CSA, UL), which may be advantageous for applications requiring broader international compliance. Both Littelfuse parts demonstrate higher inventory levels (742 and 2347 pieces respectively).

Compliance Considerations: All four parts are ROHS3 compliant and carry REACH Unaffected status. All parts are rated for industrial circuit protection applications with identical current, voltage, and form factor specifications. Selection among these parts is determined by procurement requirements, inventory availability, and supply chain preferences rather than technical performance differences in the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can BK/MDA-30-R be used as a direct replacement for MDA-30-R? A: Yes. BK/MDA-30-R is manufactured by the same company (Eaton - Electronics Division) and carries identical electrical ratings (30 A, 250 V AC, 125 V DC), fuse type (ceramic cartridge), response time (slow blow), and package specifications (3AB, 3AG, 1/4" x 1-1/4"). Both parts are ROHS3 compliant and hold CE, CSA, and UL certifications.

Q: Are the Littelfuse parts 0326030.HXP and 0326030.MXP interchangeable with MDA-30-R? A: Yes. Both Littelfuse parts meet all mandatory electrical and mechanical specifications: 30 A current rating, 250 V AC / 125 V DC voltage ratings, ceramic cartridge fuse type, slow-blow response, and 3AB, 3AG form factor with 0.250" Dia x 1.250" L dimensions. Both are ROHS3 compliant and hold required certifications (CE, CSA, UL, plus K-MARK and PSE).

Q: What is the difference between 0326030.HXP and 0326030.MXP? A: Both parts are manufactured by Littelfuse Inc. and carry identical electrical specifications, mechanical dimensions, and certifications. The primary difference is inventory availability: 0326030.MXP has 2347 pieces in stock compared to 742 pieces for 0326030.HXP.

Q: Does the package designation 3AB, 3AG apply to all substitute parts? A: Yes. All four parts (MDA-30-R, BK/MDA-30-R, 0326030.HXP, and 0326030.MXP) are specified for 3AB, 3AG holder compatibility with identical physical dimensions of 0.250" Dia x 1.250" L (6.35mm x 31.75mm). These parts are mechanically interchangeable in standard fuse holders designed for this form factor.

Q: Are there any voltage or current rating differences among these parts? A: No. All four parts carry identical voltage ratings (250 V AC, 125 V DC) and current rating (30 A). All are slow-blow ceramic cartridge fuses suitable for the same circuit protection applications.

Q: What certifications do these parts hold? A: MDA-30-R and BK/MDA-30-R hold CE, CSA, and UL certifications. The Littelfuse parts (0326030.HXP and 0326030.MXP) hold CE, CSA, UL, K-MARK, and PSE certifications. All parts are ROHS3 compliant and REACH unaffected.