Bussmann MDA-R Series Time-Del...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6.77
Bussmann MDA-R Series Time-Delay Ceramic Tube Fuse

Bussmann MDA-R Series Time-Delay Ceramic Tube Fuse

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Model: MDA-5-R

In Stock (leaves warehouse same day if ordered before 3pm ET)

$6.77
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Bussmann MDA-10-R Electronic Time-Delay Fuse 10A 250V Ceramic Tube Construction

Professional Electronic Circuit Protection with Time-Delay Response

The Bussmann MDA-10-R delivers reliable time-delay fuse protection specifically designed for electronic circuits. This 10A, 250V fuse features ceramic tube construction with nickel-plated brass endcaps and ferrule end connections, providing dependable overcurrent protection with controlled response characteristics for sensitive electronic applications.

Professional Features & Benefits

  • 10A Current Rating: Provides precise overcurrent protection for electronic circuits with reliable amperage capacity.
  • 250V Voltage Rating: Supports standard voltage applications with 200 AIC at 250 Vac interrupt rating capability.
  • Time-Delay Response: Offers controlled opening characteristics with 60 min. maximum at 135% and 120 secs. maximum at 200% for inrush current tolerance.
  • Ceramic Tube Construction: Features durable ceramic tube with nickel-plated brass endcaps for reliable performance and corrosion resistance.
  • Electronic Circuit Application: Specifically designed for electronic circuit protection with low voltage drop of typical .135 mV.
  • Compact Design: Measures .25 IN diameter x 1.25 IN length for space-efficient installation in electronic equipment.
  • Low Resistance: Typical DC cold resistance of .00925 ohms minimizes power loss and heat generation.

Technical Specifications

  • Amperage Rating: 10A
  • Application: Electronic Circuits
  • Connection: Ferrule end X ferrule end
  • Fuse Indicator: Non Indicating
  • Interrupt Rating: 200 AIC at 250 Vac, 10 kAIC at 125 Vac
  • Material Type: Ceramic tube, nickel-plated brass endcaps
  • Melting L2t : Typical: 1620.43
  • Packaging Type: Standard
  • Product Diameter: .25 IN
  • Product Height: .25 IN
  • Product Length: 1.25 IN
  • Product Type: Electronic
  • Product Weight: .005 LB
  • Product Width: .25 IN
  • Resistance: Typical DC cold: .00925 ohms
  • Response Time: 60 min. maximum at 135%, 120 secs. maximum at 200%
  • Voltage Drop: Typical: .135 mV
  • Voltage Rating: 250V

Professional Applications

  • Electronic Equipment Protection
  • Control Panel Applications
  • Instrumentation Circuits
  • Power Supply Protection
  • Industrial Electronics
  • Commercial Electronic Systems
  • Sensitive Circuit Protection

Why Choose Bussmann Quality?

Bussmann delivers proven reliability in electronic circuit protection with ceramic tube construction and nickel-plated brass endcaps for long-term durability. The time-delay response characteristics and low resistance design ensure optimal protection performance for sensitive electronic applications.

Product Specs

Department:
Electrical
Product Type:
Time-Delay Fuse
Product Group:
Circuit Protection
Product Subgroup:
Fuses
Product Weight:
0.005 lb
Product Width:
0.25 in
Application:
Electronic Circuits
Product Length:
1.25 in
Connection:
Ferrule end X ferrule end
Product Diameter:
0.25 in
Fuse Indicator:
Non Indicating
Product Height:
0.25 in
Voltage Rating:
250V

Bussmann MDA-5-R – Frequently Asked Questions

1) Can I use a time-delay MDA fuse where a fast-acting fuse keeps blowing on startup?
That is what the MDA-R is built for. It holds 135 percent of rating for up to 60 minutes and 200 percent for up to 120 seconds, so motor, transformer, or power-supply inrush passes without nuisance opening. A fast-acting fuse in the same holder clears far sooner. Do not go the other direction: if the circuit protects semiconductors that need fast clearing, a time-delay fuse lets more energy through than they can take.
2) Which amp ratings does the Bussmann MDA-R time-delay fuse come in?
Two ratings: 5A (MDA-5-R) and 10A (MDA-10-R). Both are 250V ceramic tube time-delay fuses in the same 1/4 x 1-1/4 inch body, so swapping between them needs no change to the holder.
3) Is the MDA-R fuse rated for 125V circuits as well as 250V?
Yes. It is a 250V fuse and carries an interrupting rating of 200 A at 250 Vac and 10 kAIC at 125 Vac. A 250V fuse can be used on lower-voltage circuits; the reverse is not true.
4) Will I be able to see when an MDA-R fuse has blown?
No. The MDA-R is non-indicating, and the body is ceramic rather than glass, so there is no visual check of the element. Test continuity with a meter or use an indicating holder if you need at-a-glance status on a control panel.
5) Is the MDA-R the right fuse for electronic equipment and power supplies?
Yes, it is specified for electronic circuit protection: control panels, instrumentation, power supplies, and industrial electronics. It is not a branch-circuit or service fuse. For feeder and branch protection you need a Class fuse sized to the circuit, not a 1/4 x 1-1/4 inch electronic fuse.
6) Why choose a ceramic body fuse over a glass tube fuse in a control panel?
Ceramic tube with nickel-plated brass endcaps handles the higher interrupting duty and resists corrosion on the ferrules better than a glass body, which matters in industrial panels and instrumentation cabinets. The trade-off is that you cannot see the element, so the MDA-R is non-indicating.
7) How much voltage drop and resistance does the 10A MDA fuse add to the circuit?
On the MDA-10-R, typical DC cold resistance is .00925 ohms with a typical voltage drop of .135 mV, and typical melting I2t is 1620.43. Those figures matter on low-voltage instrumentation and sensing circuits where added series resistance shifts a reading.
How fast can I get the Bussmann MDA-5-R delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann MDA-5-R come with a warranty?
Absolutely. The Bussmann MDA-5-R is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann MDA-5-R?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bussmann MDA-5-R from ZenSupply?
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