(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.
    30-day Returns
    Free Shipping
    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.
    Load more reviews...
    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