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Basic Type Three Phase AC SCR Power Regulator


MGR-SCR Series

Voltage Power Regulator

MGR-SCR Series Three Phase Power Regulator (also known as three-phase thyristor voltage regulator, three-phase power SCR voltage regulator, or three phase thyristor power controller), uses three sets of anti-parallel (back-to-back) Power SCRs as output components to regulate the power of the three-phase load through Phase Control (Conduction Angle Control). To meet the different needs of users, we...


Basic Parameters

Control Signal:  E: CON 0~5V; F: CON 0~10V; G: CON 4~20mA

Power Voltage:  Power regulator--three phase, 380VAC (three-phase four-wire); Air cooled fan--220VAC; 50Hz/60Hz

Output Mode:  Phase output

Load Current:  120A

Operating Environment: Ambient temperature below 45 °C, ambient humidity below 90% RH


Linear phase-shift control circuit with good stability and high precision

Vacuum welding technology with good quality and long service life

Modularization with high pressure resistant, safer and more reliable

Miniaturization with convenience for installation, wiring and etc.


The input circuit of the main circuit adopts three-phase four-wire connection, no phase sequence requirement.

SCR is a high current component, so please be sure to tighten the (A1, B1, C1) and (A2, B2, C2) terminals, otherwise it will heat up the terminals and then burn out the SCR.

When the three-phase load adopts the Y-connection method, the neutral point of Y must be connected to the neutral line; if the neutral point of Y is not connected to the neutral line, the three-phase load needs to be relatively balanced.

When the module is used for the load with load power greater than 15 KW, it is recommended to use a suitable heat sink, and apply thermal grease between the heat sink and the SCR backplane, as well as cold air to cool down.

Module protection: Please use the semiconductor high speed fuse to protect the load and module from overcurrent.

* Please contact us if you need to customize according to your special needs.

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