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    Solid state relay SSR-80DA, 80A 3-32V DC to AC

    5 out of 5 based on 1 reviews | Write a review
    SSR-80DA, DC control AC solid state relay, load current rating to 80 Amp, 3-32V DC input voltage, 24-480V AC load voltage, excellent quality and low price, high reliability and long lifespan.
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    80A 3-32V DC to 24-480V AC solid state relay (SSR) features 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


    Model ATO-SSR-DH80DA
    Input Control voltage range 3-32V DC
    Max. input current 12mA
    Must operate voltage 2.8V DC
    Must release voltage 1.5V DC
    Output Load voltage range 24-480V AC
    Peak voltage 800V AC
    Maximum load current 80A
    Maximum off-state leakage current 2mA
    Maximum off-state time 10mS
    Maximum on-state voltage drop 1.5V
    General Type DC to AC, single phase
    Dimension L – W – H (mm) 57.4х44.8х28
    Weight 135g
    Dielectric strength (input to output) 4000V
    Dielectric strength (input, output to the base) 2500V
    Operating temperature -20℃~ 80℃
    Mount Panel
    Certification CE


    1. When the load is a resistive load, the maximum load current of the selected SSR should be 2~3 times greater than the actual load current;
    2. When the load is an inductive load, the maximum load current of the selected SSR should be more than 7~8 times the actual load current.
    3. When the maximum load current is higher than 10A, a heat sink must be installed to the solid state relay, or the SSR relay should be mounted on a metal base plate with heat dissipation effect, and the thermal grease is applied between them.

    Dimension (Unit: mm)

    Single Phase SSR Dimensions

    Wiring Diagram

    Single Phase DC to AC SSR Wiring Diagram

    Tips: Zero-crossing Solid State Relay vs Random Turn-on Solid State Relay

    When a valid control signal is applied at the input, the random solid state relay output is immediately on (in microseconds) and the zero-crossing solid state relay is turned on until the load voltage crosses zero (± 15V). When the control signal is undone at the input, the zero-crossing and random SSRs are turned off at the time when their holding current fails.

    Although they are likely to cause a maximum half-cycle delay, zero-crossing solid state relays reduce the impact on the load and RF interference, which makes them ideal switching devices that are most commonly used in "single-pole single-throw" switching applications.

    Random solid state relay is characterized by fast response. It can control the phase-shift trigger pulse to easily change the AC grid voltage, and therefore, it can be used to accurately adjust temperature, dimming and other resistive loads and some inductive loads occasions.

    Solid state relay (SSR) is simple but widely used in the automation fields. Thus, it is not complex to wire a solid state relay. In this vedio, ATO takes a 40 Amp SSR (DC - AC) for example to show the wiring of a SSR and then switch on/off a motor with this SSR.

    Existing reviews of Solid state relay SSR-80DA, 80A 3-32V DC to AC
    I was looking at your 80A DC to AC solid state relay.
    I see the control voltage is DC, do you make a SSR with control voltage 120VAC?  
    We are currently using the N-95 Mitsubishi contactor for our heater circuit on machine. 480vac 3 heater bands total 34KW 480vac and using 120vac as control voltage.
    From: Clint | Date: 12/12/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Ok, in that case, we recommend using a solid state relay, 3 phase, SSR-120AA, of model: ATO-SSR-TH120AA, 120A current capacity, 70-280V AC control voltage.
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