BK/MDA-BV-30-R Equivalent & Substitute Parts

Part Overview

The BK/MDA-BV-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 through-hole mounted fuse is designed for slow-blow response characteristics and is approved by CSA and UL standards. The part is currently active in production with 991 pieces in stock. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain compatibility across manufacturing batches and procurement cycles.

Substiute Parts

BK/MDA-BV-30-R

Eaton - Electronics DivisionIn Stock: 1038BK/MDA-BV-30-R Datasheet

Current PartRFQ

BK/MDA-V-30-R

Eaton - Electronics DivisionIn Stock: 1699BK/MDA-V-30-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/MDA-BV-30-R is determined by strict equivalence across the following critical parameters:

• Current Rating: 30 A (exact match required)
• Voltage Ratings: 250 V AC and 125 V DC (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity: 1.5kA AC, 10kA DC (exact match required)
• Physical Dimensions: 0.266" Dia x 1.292" L (exact match required)

The BK/MDA-V-30-R meets all substitution criteria as a parametric equivalent within the MDA series from Eaton - Electronics Division.

Parameter Comparison

Engineering Selection Recommendations

Both the BK/MDA-BV-30-R and BK/MDA-V-30-R are active production parts from Eaton - Electronics Division within the MDA series. The BK/MDA-V-30-R is a direct parametric equivalent with identical electrical and mechanical specifications. The substitute part carries additional CE certification in addition to CSA and UL approvals, providing expanded regulatory compliance coverage. DC cold resistance values differ marginally (0.002 Ohms versus 0.00243 Ohms) but remain within acceptable tolerance for this component category. Both parts are ROHS3 compliant and suitable for equivalent circuit protection applications. Selection between these parts may be based on supply availability, regulatory requirements for specific markets, or procurement preferences.

Frequently Asked Questions (FAQ)

Q: Can the BK/MDA-V-30-R be used as a direct replacement for the BK/MDA-BV-30-R?

A: Yes. The BK/MDA-V-30-R is a parametric equivalent with identical current rating (30 A), voltage ratings (250 V AC, 125 V DC), fuse type (ceramic cartridge), response time (slow blow), package dimensions (3AB, 3AG, 1/4" x 1-1/4"), and breaking capacity (1.5kA AC, 10kA DC). Both parts are manufactured by Eaton - Electronics Division within the MDA series.

Q: Are there any differences in electrical performance between these two parts?

A: The DC cold resistance values differ slightly: BK/MDA-BV-30-R measures 0.002 Ohms while BK/MDA-V-30-R measures 0.00243 Ohms. This minor variance is within acceptable tolerance for ceramic cartridge fuses and does not affect circuit protection performance. All other electrical parameters, including melting I²t (1096.7), are identical.

Q: What certifications apply to each part?

A: The BK/MDA-BV-30-R carries CSA and UL approvals. The BK/MDA-V-30-R carries CE, CSA, and UL approvals. The substitute part includes additional CE certification, which may be beneficial for applications requiring European regulatory compliance.

Q: Are the physical dimensions identical?

A: Yes. Both parts share identical dimensions of 0.266" diameter by 1.292" length (6.76mm x 32.82mm) and are packaged as 3AB, 3AG, 1/4" x 1-1/4" axial through-hole components. They are mechanically interchangeable in circuit board layouts.

Q: Do both parts meet RoHS requirements?

A: Yes. Both the BK/MDA-BV-30-R and BK/MDA-V-30-R are ROHS3 compliant, meeting current environmental and material restriction standards.

Q: What is the difference between "slow blow" response and other fuse types?

A: Slow blow fuses are designed to tolerate temporary inrush currents without opening, responding only to sustained overcurrent conditions. Both parts in this comparison use slow blow characteristics, making them suitable for circuits with normal inrush current behavior.

Q: Can these fuses be used in both AC and DC circuits?

A: Yes. Both parts are rated for 250 V AC and 125 V DC operation, allowing use in dual-voltage applications within these specified limits.