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

    Favorable price SSR-120AA 120A solid state relay, 3 phase, 70-280V AC control voltage, 24-480V AC load voltage, high quality, long life time, widely used in automatic control.
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    Delivery date: 6-12 days

    Solid state relay, 3 phase, load current 120A, AC control, 70-280V AC input, 24-480V AC output, LED indicator, zero-crossing switch, built-in RC. SSR features optical isolation, no electric spark, no noise, no contact, high switching speed, high reliability and good performance.

    3 Phase SSR-120AA Specification

    Basics Model ATO-SYTH12048ZA2
    Size 105х74х33mm
    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 Need fan for cooling or water cooling

    Solid State Relay Dimensions

    3 phase SSR dimensions

    Three Phase SSR Wiring Diagram

    3 phase SSR wiring diagram 70-280VAC

    Tips: Solid state relay (SSRs) for heating industry

    At present, in the plastic machinery industry, solid state relays (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 solid state relay (SSR) 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, solid state relays (SSRs) are almost used to control heating coils by the entire plastic machinery industry by virtue of their own advantages.

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