MDA-8-R Equivalent & Substitute Parts

Part Overview

The MDA-8-R is an 8 A, 250 V AC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This slow-blow fuse is designed for applications requiring overcurrent protection in AC and DC circuits and operates within the 3AB and 3AG holder form factor (1/4" x 1-1/4"). The part maintains Active product status with 1040 pieces in current inventory. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications where the primary part number becomes unavailable or where alternative manufacturers' components meet identical electrical and mechanical specifications.

Substiute Parts

MDA-8-R

Eaton - Electronics DivisionIn Stock: 1081MDA-8-R Datasheet

Current PartRFQ

BK/MDA-8-R

Eaton - Electronics DivisionIn Stock: 1714BK/MDA-8-R Datasheet

DirectRFQ

0001.2533

SCHURTER Inc.In Stock: 30570001.2533 Datasheet

DirectRFQ

0326008.HXP

Littelfuse Inc.In Stock: 11900326008.HXP Datasheet

DirectRFQ

GSA 8-R

Bel Fuse Inc.In Stock: 1419GSA 8-R Datasheet

SimilarRFQ

0326008.MXP

Littelfuse Inc.In Stock: 27100326008.MXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDA-8-R is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 8 A
• Voltage Rating (AC): 250 V
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
• Mounting Type: Requires Holder
• Response Time: Slow Blow
• Physical Dimensions: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)

Fuse Type Consideration: The MDA-8-R is a ceramic cartridge fuse. Substitute parts are classified into two categories:

1. Direct Ceramic Equivalents – Parts maintaining identical ceramic construction, fuse type, and all mandatory parameters
2. Glass Cartridge Alternative – Parts with glass construction that meet all electrical and mechanical parameters but differ in fuse element material

All substitute parts listed maintain ROHS3 compliance and Active product status. Approval agency certifications vary by manufacturer but include CE, CSA, and UL designations across the substitute portfolio.

Parameter Comparison

Engineering Selection Recommendations

Primary Direct Equivalent: BK/MDA-8-R (Eaton - Electronics Division) is the primary direct equivalent to MDA-8-R. Both parts are manufactured by Eaton, share identical electrical specifications, breaking capacity, melting I²t values, and DC cold resistance. Both maintain CE, CSA, and UL certifications. This part number represents the same fuse with alternative packaging or distribution designation.

Ceramic Cartridge Alternatives: 0326008.HXP and 0326008.MXP (Littelfuse Inc., Series 326) are ceramic cartridge fuses meeting all mandatory electrical and mechanical parameters. These parts feature higher breaking capacity (400A versus 200A) and lower melting I²t (67.1 versus 188), indicating faster response characteristics within the slow-blow classification. Operating temperature range extends to -55°C ~ 125°C. Both parts carry expanded approval certifications including K-MARK and PSE in addition to CE, CSA, and UL.

GSA 8-R (Bel Fuse Inc., Series GSA) is a ceramic cartridge fuse with identical current, voltage, and package specifications. This part maintains 200A breaking capacity matching the MDA-8-R. The melting I²t value of 483 indicates a slower thermal response compared to the MDA-8-R. Operating temperature range is -55°C ~ 125°C. Certifications include CE, CSA, cURus, and PSE.

Glass Cartridge Alternative: 0001.2533 (SCHURTER Inc., Series SPT 6.3x32) is a glass cartridge fuse with 8 A, 250 V AC rating and additional 63 V DC rating. This part differs in fuse element material (glass versus ceramic) and provides higher breaking capacity (1.5kA AC, 20kA DC). Operating temperature range is -40°C ~ 85°C. Certification is cURus. This alternative is suitable for applications where glass construction and enhanced DC breaking capacity are acceptable.

All substitute parts maintain ROHS3 compliance and Active product status.

Frequently Asked Questions (FAQ)

Q: Can BK/MDA-8-R be used as a direct replacement for MDA-8-R? A: Yes. BK/MDA-8-R is manufactured by Eaton - Electronics Division and shares identical electrical specifications, breaking capacity (200A), melting I²t (188), DC cold resistance (0.013 Ohms), and approval certifications (CE, CSA, UL) with MDA-8-R. Both are ceramic cartridge fuses with 8 A, 250 V AC rating in the 3AB/3AG form factor.

Q: What is the difference between ceramic and glass cartridge fuses in this application? A: The MDA-8-R uses ceramic construction. The 0001.2533 alternative uses glass construction. Both meet the 8 A, 250 V AC electrical requirements and 3AB/3AG package specifications. The glass alternative provides higher breaking capacity (1.5kA AC, 20kA DC versus 200A) and includes 63 V DC rating. Selection between ceramic and glass depends on application requirements for breaking capacity and DC voltage exposure.

Q: Are the Littelfuse 0326008.HXP and 0326008.MXP parts interchangeable? A: Yes. Both Littelfuse parts (0326008.HXP and 0326008.MXP) are ceramic cartridge fuses from Series 326 with identical electrical specifications: 8 A, 250 V AC, slow-blow response, 400A breaking capacity, 67.1 melting I²t, 0.0193 Ohms DC cold resistance, and -55°C ~ 125°C operating temperature. Both carry CE, CSA, K-MARK, PSE, and UL certifications.

Q: Does the GSA 8-R have different thermal response characteristics? A: GSA 8-R has a melting I²t value of 483 compared to MDA-8-R's 188. This indicates GSA 8-R exhibits slower thermal response within the slow-blow classification. Both parts maintain 200A breaking capacity and identical current/voltage ratings. Selection depends on whether the application requires the specific thermal response curve of the MDA-8-R or can accommodate the slower response of GSA 8-R.

Q: What approval certifications are required for my application? A: The MDA-8-R carries CE, CSA, and UL certifications. Substitute parts carry varying certification combinations: BK/MDA-8-R (CE, CSA, UL), 0326008.HXP and 0326008.MXP (CE, CSA, K-MARK, PSE, UL), GSA 8-R (CE, CSA, cURus, PSE), and 0001.2533 (cURus). Verify that the selected substitute part carries all certifications required by your application standards and regional regulations.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed—BK/MDA-8-R, 0001.2533, 0326008.HXP, GSA 8-R, and 0326008.MXP—maintain ROHS3 compliance status.

Q: Can I use these fuses without a holder? A: No. All parts in this comparison, including MDA-8-R and all substitutes, require a holder for installation. The package specification 3AB, 3AG, 1/4" x 1-1/4" defines the holder form factor. The fuse cartridge is not designed for direct circuit connection.

Q: What is the physical dimension tolerance between parts? A: MDA-8-R, 0326008.HXP, and 0326008.MXP are specified at 0.250" Dia x 1.250" L (6.35mm x 31.75mm). GSA 8-R and 0001.2533 are specified at 0.250" Dia x 1.252" L (6.35mm x 31.80mm). The length difference of 0.002" (0.05mm) is within standard mechanical tolerance for 3AB/3AG holder compatibility.