An Automatic Phase Selector is an intelligent device designed to automatically select the healthiest phase from a three-phase power supply and supply uninterrupted single-phase output to critical loads. It ensures continuous power by instantly switching to an available phase in case of phase failure, low voltage, or fluctuation.
This device is ideal for locations with unstable power conditions and is widely used in homes, offices, hospitals, ATMs, shops, and telecom equipment, where uninterrupted single-phase power is essential
| Feature | Specification / Description |
|---|---|
| Phase Monitoring | Continuously monitors all three phases |
| Automatic Phase Selection | Selects the healthiest phase automatically |
| Phase Failure Protection | Prevents load operation during phase loss |
| Low/High Voltage Protection | Avoids supply from unsafe voltage phases |
| Auto Changeover | Instant switching to available healthy phase |
| Control Logic | Microcontroller or relay-based intelligent control |
| Indicators | LED indicators for phase availability & output |
| Output Type | Single-phase output from three-phase input |
| Voltage Rating | Typically 230V ± tolerance |
| Current Rating | Available in multiple ratings (e.g., 25A–100A) |
| Housing | Compact, rugged ABS or metal enclosure |
| Installation | Wall mount / Panel mount |
| Operation | Fully automatic, maintenance-free |
Automatically safeguards three-phase motors, compressors, pumps, and industrial machinery phase reversal,
Ensures the correct phase sequence (R‑Y‑B) at all times without manual intervention, keeping equipment
With auto-reset and seamless operation, the device restores normal operation after faults, reducing production
Microcontroller or relay-based control detects and corrects phase issues within milliseconds, ensuring sensitive
Suitable for a variety of applications from small motors to heavy industrial machinery,covering
Equipped with LED indicators or digital displays for status monitoring and comes in rugged, panel-mountable
Maintains stable voltage with ±1% to ±2% precision for sensitive equipment protection.
Advanced servo motor technology automatically corrects voltage fluctuations.
Quick voltage correction prevents damage from sudden power changes.
Overload, short circuit, phase failure & phase reversal protection for total safety.
Ensures long life, better performance, and high load handling capacity.
Shows input voltage, output voltage, current & load percentage clearly.
Microtek Power has been a trusted name in power solutions across India for decades, known for high-performance voltage stabilizers that deliver reliable protection.
Their stabilizers use precision servo motor–controlled variable transformers, ensuring rapid and accurate voltage correction even under extreme fluctuations.
Microtek offers a complete portfolio — from single phase units for homes and offices to three phase air-cooled & oil-cooled servo stabilizers for heavy industrial loads.
Microtek Servo Stabilizers maintain output voltage with tight regulation (±1%) and high efficiency, reducing stress on sensitive electrical equipment and improving lifespan.
