Description
The SAMWHA DSP-Phase Automatic Phase Changeover Relay ATR-80A is a reliable and high-performance 3-phase automatic phase selector designed to ensure uninterrupted power supply in industrial and commercial electrical systems. It automatically detects phase loss, failure, or voltage imbalance and switches to the available phase, maintaining consistent power delivery.
Key Features:
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Automatic phase selection for uninterrupted operation during phase failure
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Compatible with three-phase loads up to 80A
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Advanced DSP technology for precise phase monitoring and protection
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Built-in safeguards against phase reversal, voltage imbalance, and over/undervoltage
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Compact and easy-to-install design suitable for control panels and industrial systems
| Specification | Details |
|---|---|
| Operating Voltage (Un) | 3×380VAC + Neutral |
| Operating Frequency | 50/60Hz |
| Operating Power | <6VA |
| Operating Temperature | -20°C to +55°C |
| High Voltage (U>) | 230–300V + Off |
| Low Voltage (U<) | 110–210V + Off |
| Error Waiting Time | 3 seconds (Fixed) |
| Changeover Delay | 3–300 seconds |
| Commonly | L1, L2, L3, and cycle |
| Display | 3×3 digit LED display, 6 LEDs |
| Measurement Precision | ±1% |
| Connection Type | Terminal connection |
| Weight | Max. 406 g |
| Mounting | Vertically assembled in the panel or on DIN rail |
| Operating Altitude | <2000 meters |
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