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Eaton Bussmann MDA20R Ceramic Time-Delay Fuse

This is a slow blow, time lag fuse with a voltage rating of 250 VAC and 125 VDC, supporting a current of 20 amps. It features a cylindrical package in sizes such as 3AG, 3AB, 1/4 x 1 1/4 inches, or 6x32mm. Constructed with ceramic tube and nickel-plated brass endcaps, it is UL listed and suitable for mounting in compatible holders. It is designed for circuit protection in various electrical and electronic applications, offering reliable current interruption with a maximum opening time of approximately 0.004 seconds at rated conditions and certifications for safety and standards compliance.

Authorized Distributors
Source:DigiKey
Part No:MDA-20-R
Stock:0
Inv Date:06-12-2026
Price: Unit price: $4.594
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Part No:MDA-20-R
Stock:1171
Inv Date:06-12-2026
Price: Unit price: $9.73
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Part No:MDA-20-R
Stock:7
Inv Date:06-12-2026
Price: Unit price: $9.92
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Part No:MDA-20-R
Stock:0
Inv Date:06-12-2026
Price: Unit price: $7.02
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Part No:MDA-20-R
Stock:0
Inv Date:06-12-2026
Price: Unit price: $7.02
Buy/RFQ:
Part No:MDA-20-R
Stock:1
Inv Date:06-12-2026
Price: Unit price: $3.328
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Eaton Bussmann MDA20R Ceramic Time-Delay Fuse Specifications:

  • Voltage Rating: 250 VAC, 125 VDC
  • Current Rating: 20 Amps
  • Physical Size: 6.35mm x 31.75mm (1/4 x 1 1/4 inches), 6x32mm
  • Construction: Ceramic tube with nickel-plated brass endcaps
  • Type: Slow blow, time lag fuse
  • Maximum Opening Time: Approximately 60 minutes at 100% load, 120 seconds at 200% load
  • UL Listed and CSA Certified for safety standards
  • Mounting: Suitable for holder mounting, axial leads available
  • Environmental Resistance: Meets MIL-STD-202 shock and vibration requirements
  • Certifications: UL, CSA
  • Features: Reliable circuit protection, corrosion-resistant construction

Buy the Buy Bussmann MDA20R Part Number MDA20R Online

Order Bussmann ceramic time-delay fuse MDA20R online today to ensure your electrical circuits are protected with high-quality, UL-listed components. This reliable fuse supports 20 amps at 250 volts AC, with durable ceramic and metal construction designed for long-term performance. Its cylindrical size of approximately 6.35mm by 31.75mm fits various holder types and applications, making it suitable for electronic and electrical safety. Purchase now to benefit from fast shipping and quality assurance, ensuring your system stays protected and operational.

Get Bussmann MDA20R today—built for reliable circuit protection and long-lasting durability in electrical systems.

Frequently Asked Questions

Where can I buy Eaton Bussmann MDA20R?

You can click on the BUY or RFQ button to purchase MDA20R from an authorized Eaton Bussmann distributor.

How do I troubleshoot issues or seek technical support for part MDA20R?

You can download the MDA20R datasheet or visit the Eaton Bussmann website for support.

Who is the manufacturer of MDA20R?

Eaton Bussmann

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