Switching lights and led drivers



  • Hello, please,
    question about switching lights at home (family house).
    I want use UniPi and one-wire relay/ssr modules but worry about inrush currents.

    Ceiling light with led bulbs, let's say 2x11W, has low current compared to 5A(10A) rated by relay, or 2A(8A) of ssr. But what about inrush at time of switch on?
    The same with low voltage led lights with driver, e.g. the driver is rated at 18W, but inrush can be 60-70A for half of millisecond for good driver, for "china made" even more.

    Will the relay and ssr withstand this for years of using in house?

    I expect be better to use the ssr because switching at zero, am I correct?

    On opposite side, is there some minimal load for used ssr type?



  • Hello, please,
    question about switching lights at home (family house).
    I want use UniPi and one-wire relay/ssr modules but worry about inrush currents.

    Ceiling light with led bulbs, let's say 2x11W, has low current compared to 5A(10A) rated by relay, or 2A(8A) of ssr. But what about inrush at time of switch on?
    The same with low voltage led lights with driver, e.g. the driver is rated at 18W, but inrush can be 60-70A for half of millisecond for good driver, for "china made" even more.

    Will the relay and ssr withstand this for years of using in house?

    I expect be better to use the ssr because switching at zero, am I correct?

    On opposite side, is there some minimal load for used ssr type?



  • Hello,

    solid state relays are ideal for switching LED lights, see the datasheets below for more information. If you use adequate cooling for the load it will withstand for years. I would not much bother with the minimal load, but check the datasheet.

    Yest SSRs are great because of switching at zero.

    http://www.sharp-world.com/products/dev ... 2s02_e.pdf
    https://www.omron.com/ecb/products/pdf/en-g5q.pdf