Equivalent & Substitute Parts for MDA-V-25-R

Part Overview

The MDA-V-25-R is a 25 A ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 250 V AC and 125 V DC operation. This through-hole mounted fuse is designed for slow-blow response characteristics and is housed in a 3AB/3AG package format measuring 1/4" x 1-1/4" (6.76mm x 32.82mm). The part maintains Active product status and is ROHS3 compliant with CE, CSA, and UL approvals. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification.

Substiute Parts

MDA-V-25-R

Eaton - Electronics DivisionIn Stock: 770MDA-V-25-R Datasheet

Current PartRFQ

BK/MDA-V-25-R

Eaton - Electronics DivisionIn Stock: 1390BK/MDA-V-25-R Datasheet

DirectRFQ

0325025.MXP

Littelfuse Inc.In Stock: 189860325025.MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MDA-V-25-R are identified based on the following critical parameters:

Primary Substitution Criteria:

• Current Rating: 25 A (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Mounting Type: Through Hole (exact match required)
• Response Time: Slow Blow (exact match required)
• Voltage Rating - AC: 250 V minimum
• Voltage Rating - DC: 125 V minimum
• Approval Agency: CE, CSA, UL certifications present

Identified Substitutes:

1. BK/MDA-V-25-R (Eaton - Electronics Division) — Direct equivalent with identical electrical and mechanical specifications
2. 0325025.MXP (Littelfuse Inc.) — Functionally compatible with voltage and current rating considerations

Parameter Comparison

Engineering Selection Recommendations

BK/MDA-V-25-R (Eaton - Electronics Division): This part is a direct equivalent to the MDA-V-25-R with identical electrical ratings (250 V AC, 125 V DC), mechanical dimensions, breaking capacity, and melting I²t characteristics. Both parts carry CE, CSA, and UL approvals and maintain ROHS3 compliance. Selection of BK/MDA-V-25-R presents no technical or compliance trade-offs relative to the original specification.

0325025.MXP (Littelfuse Inc.): This part shares the same current rating (25 A), fuse type (ceramic cartridge), package format (3AB/3AG), and response time (slow blow). However, the AC voltage rating is 125 V compared to the original 250 V AC specification. The breaking capacity is reduced (400A AC vs. 1.5kA AC; 600A DC vs. 10kA DC). The melting I²t is higher (1030 vs. 734.69). This part carries additional approvals (K-MARK, PSE) and specifies an operating temperature range (-55°C ~ 125°C). Selection of 0325025.MXP is appropriate only in applications where the AC voltage requirement does not exceed 125 V and where the reduced breaking capacity is acceptable for the circuit protection scheme.

Frequently Asked Questions (FAQ)

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

A: Yes. BK/MDA-V-25-R is electrically and mechanically identical to MDA-V-25-R. Both parts are manufactured by Eaton - Electronics Division, carry identical voltage ratings (250 V AC, 125 V DC), current rating (25 A), breaking capacity, and approval certifications (CE, CSA, UL). No circuit redesign or testing is required.

Q: Under what conditions can 0325025.MXP substitute for MDA-V-25-R?

A: The 0325025.MXP can be used only in applications where the AC voltage requirement does not exceed 125 V. The original MDA-V-25-R is rated for 250 V AC; the 0325025.MXP is rated for 125 V AC. Additionally, the breaking capacity of 0325025.MXP (400A AC, 600A DC) is lower than MDA-V-25-R (1.5kA AC, 10kA DC). Substitution requires verification that the circuit protection scheme accommodates these reduced ratings.

Q: Are all three parts mechanically interchangeable?

A: Yes. All three parts use the 3AB/3AG package format with dimensions of 1/4" x 1-1/4" (6.76mm x 32.82mm to 6.99mm x 32.72mm). All are through-hole mounted ceramic cartridge fuses with identical form factors and mounting compatibility.

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

A: MDA-V-25-R and BK/MDA-V-25-R both have a melting I²t of 734.69. The 0325025.MXP has a melting I²t of 1030, which is approximately 40% higher. This indicates a slower thermal response and may affect the coordination of the fuse with upstream or downstream protective devices in a circuit.

Q: Do all substitute parts meet the same compliance standards?

A: MDA-V-25-R and BK/MDA-V-25-R both carry CE, CSA, and UL approvals. The 0325025.MXP carries CE, CSA, K-MARK, PSE, and UL approvals, providing additional regional certifications. All three parts are ROHS3 compliant.

Q: What is the DC cold resistance difference, and does it matter?

A: MDA-V-25-R and BK/MDA-V-25-R have a DC cold resistance of 0.00305 Ohms. The 0325025.MXP has a DC cold resistance of 0.0024 Ohms, approximately 21% lower. In high-current or precision circuit applications, this difference may affect voltage drop calculations and thermal performance during normal operation.