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Small cylindrical ceramic fuse with metal end caps

Bussmann

Bussmann MDA-1/4-R Ceramic Fuse 0.25A 10kA 125V 35A 250V line protection

SKU CH-P81A-KFP0R

Ceramic time-delay fuse rated 0.25 A with 10 kA interrupt at 125 V AC and 35 A at 250 V AC

  • Time-delay design tolerates brief surges without nuisance trips
  • Ceramic body withstands high interrupting energy
  • 10 kA rating at 125 V AC handles heavy fault currents
  • 35 A rating at 250 V AC covers higher-voltage circuits
  • Standard 1-1/4 in × 1/4 in size fits common fuse blocks

MDA-1/4-R Ceramic Fuse 0.25A 10kA 125V 35A 250V

The MDA-1/4-R is a cylindrical ceramic fuse rated at 0.25 A with time-delay characteristics. It carries a 10 kA interrupt rating at 125 V AC and 35 A at 250 V AC. The body measures 1-1/4 in length by 1/4 in diameter. It is designed for line protection in electrical circuits.

Suits circuits needing 0.25 A time-delay ceramic

This fuse suits low-current circuits that require a 0.25 A time-delay element with a ceramic body. It fits compatible fuse blocks such as the 3823, HFA, HHN, HK, HKP, HPF, HRK, HTB and S-8000 series. Buyers who need a different current rating, a fast-acting response, a rejection-style fuse or a higher interrupt rating at 250 V AC should look elsewhere.

0.25 A time-delay ceramic element

The decisive specification is the 0.25 A time-delay rating combined with a 10 kA interrupt capacity at 125 V AC. This defines the overcurrent profile the fuse will tolerate before opening. Verify that the circuit voltage and available fault current match these ratings before installation.

How it compares

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Price $16.99
Cheaper than about 83% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameEATON BUSSMANN

Questions about this item

Should I pick the 0.25 A version or a higher current rating for my circuit?

Choose the 0.25 A rating only if your circuit's normal current is at or below that value; a higher rating will not protect the wiring at the intended level.

What does the 10 kA at 125 V AC interrupt rating mean when the fuse is installed?

It means the fuse can safely break a fault current of up to 10 kA on a 125 V AC supply without rupturing.

How does the 35 A at 250 V AC rating limit the fuse's use in higher-voltage circuits?

On 250 V AC systems the fuse is only rated to interrupt faults up to 35 A, so it must not be used where prospective short-circuit current exceeds that value.

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