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thermal Fuse for breadmaker

Discussion in 'Electronic Repair' started by badgerboy, Feb 20, 2007.

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  1. badgerboy

    badgerboy Guest

    My breadmaker has a dispenser function activated by a plunger tyoe
    action, which uses a small electric motor. The motor seems to have a
    small thermal fuse that has opened, probably when I was testing it.
    The numbers written on it are 115C, 250V, 1A. Its about the size of a
    small resistor used for PCB's.

    I ordered a thermal fuse from Goodman', but I'm wondering if
    anyone has ever replaced one of these, and if there is any chance this
    component may be other than a thermal fuse.

    Any comments would be much appreciated.

    Thanks, Guy
  2. US or UK? Radio Shack used to sell them.


  3. Arfa Daily

    Arfa Daily Guest

    Sounds like a 115 degree C thermal fuse, with a max carrying capacity of 1
    amp. There's not usually any issues with replacing them, but you should make
    sure that the motor is running correctly and unrestricted. The current and
    operating temperature of a partially impeded motor, can go up substantially
    from the norm. If you don't want to risk wasting your new thermal fuse,
    temporarily wire in a 'standard' T1A fuse, and just check that all is well

  4. badgerboy

    badgerboy Guest

    I'm in the US. I'll look at the Shack.

    This motor only operates for a few seconds, as it is only required to
    dump a tray into the breadpan. So it is not likely to overheat in
    actual operation. I will test the motor again to make sure its
    working. By the way, its only the size of a film cannister, probably
    1/2 that. Thanks for the replies. Guy
  5. Guy-

    I replaced one in a water distiller, and a couple in Hewlett Packard
    crystal ovens.

    I think there were two temperatures available from Radio Shack, and
    three or more from NTE (NTE calls it a Thermal Cutoff). These were
    about the size of a 1 Watt resistor, or a little smaller. One ordered
    from HP was about the size of a 1/4 Watt resistor or a little larger.

    As you might guess, it is not recommended to solder such a device into
    the circuit. When I found that necessary, I heat-sinked each lead with
    a pair of pliers close to the body. Normally you would crimp such a
    temperature-sensitive device, and one of the replacements was provided
    with crimp-sleeves.

  6. Is there any fuses that are not thermal?
  7. Jim Land

    Jim Land Guest

    A 'normal' fuse blows when the current through it exceeds its rating. (It
    protects the equipment from "too much current.")

    A thermal fuse blows when its temperature exceeds its rating. (It protects
    the equipment from "getting too hot.")
  8. badgerboy

    badgerboy Guest


    I didn't see your reply till just now, and thanks for the comments.
    Yes it does seem a little dicy adding this thing into the circuit,
    expecially because its connected directly to the filament-thin winding
    wire for the plunger. I got a replacement from Goodman's, and I'll be
    trying it soon. The good thing is that this circuit is not really
    critical to the operation of the machin, so if I goof up no big deal.
    By the way the replacement I got from goodman's is the same
    temperature rating, higher current rating and about twice the physical
    size of the original.

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