KAEL SAMWHA DSP-Phase Automatic Phase Changeover Relay ATR-80A | 3 Phase Auto Phase Selector

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: Automatic phase selection for uninterrupted operation during phase failure Compatible with three-phase loads up to 80A Advanced DSP technology for precise phase monitoring and protection Built-in safeguards against phase reversal, voltage imbalance, and over/undervoltage 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