3 Phase Sequence Voltage Protection Relay APR-4V-1515 Anly

Operating Voltage (Choose below when ordering): AC 220V, 380V, 415V, 440V  Allowable Operating Voltage: +/- 15% of operating voltage  Rated Frequency: 50/60Hz Characteristics: *Phase Sequence Detection*Three-Phase Unbalanced Detection*Overvoltage*Undervoltage*Phase-loss  Tripping Delay: 3s...