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    4-Wire 3-Phase SCR Power Regulator

    5 out of 5 based on 1 reviews | Write a review
    SCR power regulator can regulate voltage/power and control temperature. Input is 3-phase 4-wire, rated voltage is 380VAC. Rated current is 40A/75A/90A/120A optional. Control signals can select 4-20mA, 0-5VDC, 0-10VDC. Power controller comes with protection function, safe and durable. Protection function is built-in fuse, simple wiring and easy maintenance.
    SKU: ATO-PRG-4340
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days


    • Phase control: continuous intersection control, stable output, ammeter does not flutter, but half wave every cycle will generate harmonics.
    • Use load: constant impedance load, variable impedance load, IR lamp.
    • Zero-position control: Distributed zero-position control, minimum resolution is 1Hz, will not generate harmonics, and the ammeter appears jittering when output.
    • Applicable load: constant impedance load.


    Model ATO-PRSCR-LA
    Rated Voltage 3 Phase 380VAC, Fan 220VAC
    Wiring 3-Phase 4-Wire
    Rated Current 40A, 75A, 90A, 120A
    Control Signal 4-20mA, 0-5VDC, 0-10VDC
    Protection Function fast fuse
    Operation Frequency 50Hz/60Hz
    Certification CE
    Outline Dimension (L*W*H) 130mm*126mm*152mm
    Installation Dimension (L*W) 90mm*116mm
    Output Mode phase output
    Use Environment temperature<45℃, humidity<90%RH

    Wiring Diagram of 4-Wire 3-Phase SCR Power Regulator

    Wiring Diagram of 4-Wire 3-Phase SCR Power Regulator

    Phase output of SCR Power Regulator


    4-Wire 3-Phase SCR Power Regulator Details


    1. Main circuit is 3-phase 4-wire input, no phase sequence is required.
    2. SCR is high current product, please be sure to lock the (R.S.T) and (U.V.W) terminals, otherwise the terminals will heat up, causing e SCR burn out.
    3. SCR has a built-in fast fuse for over current and short circuit protection. If the fuse is blown, be sure to replace it with fuse of the same specification. Be careful not to increase amperage of the fuse at will.
    4. When using 3-phase load Y type connection, the center point of Y must be connected to zero line. If the center line of Y is not connected to zero line, the 3-phase load needs to be relatively balanced.
    5. When using the module, if load power is high or heat dissipation conditions are not good, please consider air cooling.
    Existing reviews of 4-Wire 3-Phase SCR Power Regulator
    Awesome power regulator!
    Works great! It's great control the power when we're using it. Can't complain for a $192 power regulator, does exactly what it's supposed to, with every penny. Highly recommend it!
    From: Firth | Date: 07/04/2022
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