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    Solid state relay SSR-15AA, 15A 70-280V AC to AC

    Single phase solid state relay (SSR), AC control, load current 15 Amp, input voltage 70-280V AC and load voltage 24-480V AC, brand new, high reliability and favorable price.
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    Solid State Relay Features

    • SSR load current 15A (AC to AC)
    • Built-in RC
    • LED indication
    • Zero-crossing switch

    15AA SSR Specification

    Basics Model ATO-SYDH1548ZA2
    Size 57.4х44.8х28mm
    Weight 100g
    Mounting method Bolted
    Ambient temperature -20℃~75℃
    Humidity ≤95%(non-condensing)
    Technical parameters Control mode AC-AC
    Load voltage 24~480V AC
    Load current 15A
    Control voltage 70~280V AC
    Control current AC ≤12mA
    On-state voltage drop ≤1.5V
    Off-state leakage current ≤2mA
    Off-state time ≤10ms
    Dielectric strength 2500V AC (1min)
    Insulation resistance 500МΩ with 500V DC
    LED indication YES
    Cooling Install heat sink or fan for cooling.

    Solid State Relay Dimensions

    SSR single phase dimensions

    SSR Wiring Diagram

    SSR single phase wiring ac-ac

    Tips: Overheat protection of solid state relays

    When the SSR is on, devices will withstand the dissipated power of P = V (tube voltage drop) × I (load), where effective values of V and I are the ones of saturation voltage drop and operating current, respectively. The load capacity of solid state relays is greatly affected by the ambient temperature and its own temperature rise. It is necessary to strictly refer to the allowable temperature rise (75 ℃) of the case when the rated working current is used according to the actual working environment conditions, to reasonably select the size of radiators or reduce the current usage. In the process of installation and use, good heat emission conditions should be ensured and otherwise, overheat will lead to incontrollable situation, or even cause damage to the product.
    In general, for the product with rated operating current less than 10A, the instrument baseplate with good heat emission conditions can be used. For more than 10A, radiators should be equipped with. For 30A or less, natural air-cooling is used, while for products with continuous load current greater than 30A, the fan in the instrument should be used for forced air cooling. For more than 100A, a radiator and a fan for forced cooling should be equipped with. In the installation, pay attention to good contact between the bottom of the relay and the radiator, and consider the amount of thermal grease coated appropriate to achieve the best cooling effect. If the relay works under high temperature (40 ℃ ~ 80 ℃) in a long term, the user can consider derating to ensure normal operation according to data of maximum output current and ambient temperature curve.

    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.

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