(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    Solid state relay, 3 phase, SSR-100AA, 100A 70-280V AC to AC

    5 out of 5 based on 1 reviews | Write a review
    Low cost and high quality SSR-100AA, 3 phase solid state relay, 100 Amp load current, AC control AC, input voltage 70-280V AC, load voltage 24-480V AC, LED indicator, panel mount, high reliability and good performance.
    Free Shipping Worldwide
    Delivery date: 6-12 days


    100A 3-phase solid state relay (SSR) can control 24-480V AC load with 70-280V AC with high structural strength, good impact resistance, and strong shock resistance. The SSR relay 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-TH100AA
    Input Control voltage range 70-280V AC
    Max. input current 20mA
    Must operate voltage 70V AC
    Must release voltage 50V AC
    Output Load voltage range 24-480V AC
    Peak voltage 800V AC
    Maximum load current 100A
    Maximum off-state leakage current 8mA
    Maximum off-state time 10mS
    Maximum on-state voltage drop 1.5V
    General Type AC to AC, 3 phase
    Dimension L – W – H (mm) 105х74.8х33
    Weight 500g
    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.

    Heat Sink

    Product Name Heat sink for 3 phase SSR SSR 150Amp heat sink dimension
    Material Aluminum alloy
    Dimension (L*W*H) 150*125*135mm
    Mounting Size Mounting Hole Diameter: 3mm
    Groove Distance: 84mm
    Weight 2.1kg
    Application ≤150A 3 phase solid state relay

    Dimensions (Unit: mm)

    3-phase SSR Relay Dimensions

    Wiring Diagram

    3-phase 70-280V AC to AC SSR Wiring Diagram

    Tips: SSR relay-ordinary type of Triac output and enhanced type of unidirectional SCR anti-parallel output

    In the case of inductive load, when the solid state relay is turned off by the on-state, a large voltage rise rate dv/dt (commutation dv/dt) will be generated at both ends of the triac due to inconsistent phase of current and voltage. The value exceeding the triac's commutation dv/dt (typically 10V/μs) will lead to delayed turn-off, or even failure. However, the unidirectional triac is unipolar and only affected by satic voltage rising rate dv/dt (typical value 100V/μs). The commutation dv/dt of ordinary type SSR formed by only triac has been greatly improved compared to enhanced SSR composed of two unidirectional SCR in anti-parallel, so the enhanced SSR should be selected in inductive or capacitive load field.

    Existing reviews of Solid state relay, 3 phase, SSR-100AA, 100A 70-280V AC to AC
    What capacity the relay would be?
    I want to use a solid state relay to run my motor with 40A rated and 100A inrush current. What capacity the relay would be?
    From: Walter | Date: 22/04/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    For the motor with 100A inrush current, the solid sate relay current should be 100A or higher, Not 40A.
    Write your review for Solid state relay, 3 phase, SSR-100AA, 100A 70-280V AC to AC
    • Only registered users can write reviews
    • Bad
    • Excellent