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    Solid state relay, 3 phase, SSR-120AA, 120A 70-280V AC to AC

    SSR-120AA 120A Solid State Relay, 3 phase, voltage input 70-280V AC output 24-480V AC, high structural strength, good impact resistance, anti-vibration, widely used in packaging machinery, textile machinery, CNC machine tools, plastic machinery and other areas of automatic control.
    SKU: ATO-TH12048ZA2

    Solid State Relay, 3 phase, load current 120A, AC control, LED indicator, zero-crossing switch, built-in RC, optical isolation, no electric spark, no noise, no contact, high switching speed, high quality and high reliability.


    Basics Model ATO-TH12048ZA2
    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 AC-AC
    Load voltage 24~480V AC
    Load current 120A
    Control voltage 70~280V AC
    Control current ≤12mA
    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 needed for cooling


    3 phase SSR dimensions

    Wiring diagram

    3 phase SSR wiring diagram 70-280VAC

    Tips: SSRs used in heating industry

    At present, in the plastic machinery industry, SSRs are usually used to control electric coils. Because the temperature control accuracy of the electric coil in the plastic machine is about ±1℃ and the control frequency of the electric coil is very high, the use of contactors can not usually achieve control effects. The use of SSRs not only solves the problem of contactor’s contact bonding, but also improves accuracy of temperature control and overall performance of the plastic machine. Therefore, SSRs are almost used to control heating coils by the entire plastic machinery industry by virtue of their own advantages.

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