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Solid stare relay (triac) question.

Discussion in 'Electronic Basics' started by David Nugent, Aug 8, 2003.

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  1. David Nugent

    David Nugent Guest

    I have a crydon solid state relay (a0241). Triac output.

    My question is:

    It has 4 leads.

    2 are +, - (Control Lines) - DC turn on voltage
    2 are AC/LOAD

    Does it matter how I hook the AC/LOAD ones up? When I look at their data
    sheet for the product, the picture on the data sheet shows AC/AC on the 2
    leads, not AC/LOAD.

  2. The AC/LOAD terminals must be connected in series with the load and
    the AC line. The polarity is not real important. Some applications
    put it on the hot side of the load, so that the disenergized load does
    not see dangerous voltage. But a TRIAC relay is not satisfactory as a
    safety disconnect switch, so you should not feel safe working on the
    load, just because the relay is off. It works just as well on the
    neutral side of the load.
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