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    Solid state relay, 3 phase, SSR-25DA, 25A 3-32V DC to AC

    Cheap SSR-25DA, 3-phase solid state relay, load current rating to 25A , DC control, input voltage 3-32V DC, load voltage 24-480V AC, panel mount, compact size, high reliability and long lifespan.
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    Delivery date: 6-20 days

    Solid State Relay Features

    25A 3-32V DC to 24-480V AC 3-phase solid state relay (SSR) features compact size high structural strength, good impact resistance, and strong shock resistance. The SSR offers a reliable switching the commercial and industrial loads, such as computer peripheral interface device, printing machine, molding machine, food machine, packaging machine, and so on.

    • Built in RC absorption
    • Photoelectric isolation
    • SCR output
    • LED indicator for operation status
    • Removable protective cover for safety
    • Panel mount
    • Zero-crossing switch type

    25 Amps 3 Phase SSR Specification

    Model ATO-SYTH2548ZD3
    Input Control voltage range 3-32V DC
    Max. input current 20mA
    Must operate voltage 4V DC
    Must release voltage 2.7V DC
    Output Load voltage range 24-480V AC
    Peak voltage 800V AC
    Load current 25A
    Maximum off-state leakage current 8mA
    Maximum off-state time 10mS
    Maximum on-state voltage drop 1.5V
    General Dimension L – W – H (mm) 105х74х33
    Weight 500g
    Dielectric strength (input to output) 4000V
    Dielectric strength (input, output to the base) 2500V
    Operating temperature -20℃~ 80℃
    Mount Panel
    Certification CE

    * When the load current is higher than 10A, a heat sink must be added to the SSR or the SSR should be mounted on a metal base plate with heat dissipation effect, and apply the thermal grease between them. 
    When the load current is higher than is 40A or more, fan forced cooling or water cooling is needed.
    * Heat sink is Not included.

    Solid State Relay Dimensions

    3 phase SSR dimensions

    Three Phase SSR Wiring Diagram

    3-phase SSR wiring diagram 3-32VDC

    Tips: Single-phase solid state relay and three-phase solid state relay

    Single-phase solid state relay is a four-terminal active device, two of which are input terminals and the others are output terminals. Photo isolation lies between them. Once the input terminal is given DC or pulse signals to a certain current value, the output terminal can be changed from off-state to on-state.

    The three-phase AC solid state relay integrates three single-phase AC solid state relays, and directly switches over three-phase load such as AC electrical machine, heater, etc. through a single input to achieve convenient control. The insulation voltage between each phase, input and output, solid state relay and baseplate is greater than 2 000 V AC. The other basic indicators are the same as corresponding single-phase solid state relay. It should be pointed out that in some cases such as laboratory teaching where actual load current is not large, three-phase SSR is more convenient to use. But large current leads to more heating. At this moment, three single-phase solid state relays may be more reliable.

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