PANEL MOUNT / THREE-PHASE / VOLTAGE REGULATOR
MGR-ST
Series
Integrated three-phase voltage control for industrial heating and process equipment. Isolated signal inputs, soft start and clear operating indicators in one panel-mount module.
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Three phases.
One compact module.
The MGR-ST integrates synchronization and control circuitry, with no external synchronization transformer required. Versions with a 220 V AC or 380 V AC auxiliary supply are available; a version requiring no separate external auxiliary power supply is available on request. Power-on soft start helps reduce the initial current surge. Over-temperature and phase-loss indicators support operating checks.
See every side.
MGR-ST380D40EG-2C, with screw terminals, signal connections and a metal mounting base.
Electrical reference.
Designed for your panel.
Overall dimensions: 106 × 75 × 38 mm. Mounting centres: 91 ±0.1 × 47 ±0.1 mm. All dimensions are in millimetres.
Connect. Control. Cool.
Connect the three-phase supply to 1 / 3 / 5 (R / S / T) and the load to 2 / 4 / 6 (U / V / W). Star and delta loads are supported. For an unbalanced star-connected load, connect the load neutral as specified in the installation instructions.
From signal to output.
Measured transfer characteristic for MGR-ST380D40FG-2C. These results describe the tested unit, not every MGR-ST variant or the EG unit pictured above. Confirm the control range of your ordered model.
The source identifies the approximately 0.7 V AC residual reading as induced voltage. The response is not linear across the measured range; do not assume half of the control voltage produces half of the output voltage.
Test reference only. Load, ambient temperature, instrument and test date are not specified in the supplied record. This curve is not a guaranteed tolerance specification.
View all 21 measurements
| Control input (V DC) | Output voltage (V AC) |
|---|---|
| 0 | 0.7 |
| 1 | 0.7 |
| 1.2 | 0.7 |
| 1.4 | 0.7 |
| 1.5 | 35 |
| 2 | 60 |
| 2.5 | 83 |
| 3 | 110 |
| 3.5 | 140 |
| 4 | 170 |
| 4.5 | 200 |
| 5 | 237 |
| 5.5 | 269 |
| 6 | 298 |
| 6.5 | 320 |
| 7 | 338 |
| 7.5 | 350 |
| 8 | 360 |
| 8.5 | 365 |
| 9 | 370 |
| 10 | 375 |
Built for industrial processes.
Electric furnaces, injection moulding, thermoforming, infrared heating, textile machinery and drying systems. For motors, transformers and other inductive loads, share your application details so MGR can confirm the appropriate regulator and current margin.