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    Solid state relay, 3 phase, SSR-10DA, 10A 3-32V DC to AC

    3-phase Solid State Relay, SSR-10DA 10A, voltage input 3-32V DC output 24-480V AC, fast switching speed, high reliability and long lifespan.
    SKU: ATO-TH1048ZD3

    Solid State Relay, 3 phase, load current 10A, DC-AC, equipped with LED indicator, zero-crossing switch, built-in RC, especially suitable for the harsh environments like corrosive, moist, dusty, etc, and frequent switching occasion.


    Basics Model ATO-TH1048ZD3
    Size 105(L)х74(W)х33(H)mm
    Weight 500g
    Mounting method Bolted
    Ambient temperature -20℃~75℃
    Humidity ≤95%(non-condensing)
    Technical parameters Control mode DC-AC
    Load voltage 24~480V AC
    Load current 10A
    Control voltage 3~32V DC
    Control current 10-68mA
    On-state voltage drop ≤1.5V AC
    Off-state leakage current ≤10mA
    Off-state time ≤10ms
    Dielectric strength 2500V AC (1min)
    Insulation resistance 500МΩ with 500V DC
    LED indication YES
    Cooling Heat sink or fan need to be installed for cooling.


    3 phase SSR dimensions

    Wiring diagram

    3-phase SSR wiring diagram 3-32VDC

    Tips: How to use SSRs in three-phase current control?

    The easiest way is to use two SSRs for motor’s on-off control, four for commutation control, and the third phase is not controlled. For a motor, it should be noted that, due to motor inertia, its commutation must be conducted after it comes to a standstill in case of similar motor stalling, which may cause a great impact voltage and current. In the design of the control circuit, pay attention to the possibility that the commutating SSR is turned on, and it is forbidden at any moment. As for power sequence, power supply of control circuit should be turned off later if added first while the power supply of electrical machinery should be turned off first if added later. Inverters should not be simply adopted to connect commutating SSRs in case of phase fault caused by the phenomenon that the turned-on SSR has not been turned off yet while another phase of SSR is already turned on. In addition, fuses, phase loss and temperature relays involved in the motor control are also protection devices to ensure normal operation of the system.

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