BK/MDA-6/10-R Equivalent & Substitute Parts

Part Overview

The BK/MDA-6/10-R is a 600 mA, 250 V AC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This slow-blow fuse is designed for applications requiring overcurrent protection in AC circuits and operates within the 3AB, 3AG form factor (1/4" x 1-1/4"). The part is currently active in production with 950 pieces in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for this fuse category.

Substiute Parts

BK/MDA-6/10-R

Eaton - Electronics DivisionIn Stock: 964BK/MDA-6/10-R Datasheet

Current PartRFQ

0326.600HXP

Littelfuse Inc.In Stock: 12200326.600HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/MDA-6/10-R is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

• Current Rating: 600 mA (exact match required)
• Voltage Rating - AC: 250 V (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" (exact match required)
• Physical Dimensions: 0.250" Dia x 1.250" L (exact match required)

Acceptable Variation Parameters:

• Voltage Rating - DC: The main part has no DC rating specified; substitute parts with DC ratings do not disqualify substitution for AC-only applications
• Melting I²t: Variation permitted within the ceramic cartridge fuse category
• DC Cold Resistance: Minor variation acceptable within ceramic fuse specifications
• Approval Agencies: Additional certifications (CE, CSA, UL) on substitute parts enhance compliance without restricting substitution

The substitute part 0326.600HXP meets all critical matching parameters and is therefore a valid equivalent for the BK/MDA-6/10-R.

Parameter Comparison

Engineering Selection Recommendations

Both the BK/MDA-6/10-R and 0326.600HXP are active production parts with ROHS3 compliance. The BK/MDA-6/10-R is manufactured by Eaton - Electronics Division, while the 0326.600HXP is manufactured by Littelfuse Inc. Both parts are identical in current rating, AC voltage rating, fuse type, response time, and physical package dimensions.

The 0326.600HXP provides additional value through multiple approval certifications (CE, CSA, UL) and an extended operating temperature range (-55°C ~ 125°C). The substitute part also includes a DC voltage rating of 125 V, which does not restrict its use in AC-only applications and expands its applicability to mixed AC/DC circuits.

Selection between these parts should be based on supply availability, procurement lead times, and application-specific certification requirements. Both parts are suitable for direct substitution in 250 V AC, 600 mA slow-blow fuse applications requiring the 3AB, 3AG form factor.

Frequently Asked Questions (FAQ)

Q: Can the 0326.600HXP replace the BK/MDA-6/10-R in all applications?

A: Yes. Both parts share identical current rating (600 mA), AC voltage rating (250 V), fuse type (ceramic cartridge), response time (slow blow), and physical dimensions (0.250" Dia x 1.250" L). The 0326.600HXP is a direct substitute for AC applications. The additional 125 V DC rating on the substitute part does not restrict its use in AC circuits.

Q: What is the significance of the different Melting I²t values?

A: The Melting I²t value (0.2 for BK/MDA-6/10-R and 3.9 for 0326.600HXP) represents the thermal energy required to melt the fuse element. Both parts are classified as slow-blow fuses and meet the 600 mA, 250 V AC specification. The difference in I²t reflects manufacturing variations within the ceramic cartridge fuse category and does not disqualify substitution.

Q: Are both parts compatible with the same fuse holders?

A: Yes. Both the BK/MDA-6/10-R and 0326.600HXP use the 3AB, 3AG form factor with identical physical dimensions (0.250" Dia x 1.250" L). Both require a compatible fuse holder and are mechanically interchangeable.

Q: What certifications does each part carry?

A: The BK/MDA-6/10-R does not list specific approval agencies. The 0326.600HXP carries CE, CSA, and UL certifications. If your application requires specific regulatory approvals, the 0326.600HXP provides documented compliance with these standards.

Q: Can the 0326.600HXP be used in DC circuits?

A: The 0326.600HXP is rated for 125 V DC, making it suitable for DC applications up to that voltage. The BK/MDA-6/10-R does not specify a DC rating. For DC applications, the 0326.600HXP is the appropriate choice between these two parts.

Q: What is the difference in DC Cold Resistance between the two parts?

A: The BK/MDA-6/10-R has a DC cold resistance of 0.78 Ohms, while the 0326.600HXP has 0.9495 Ohms. This minor difference is within acceptable tolerances for ceramic cartridge fuses and does not affect substitution suitability for standard overcurrent protection applications.