AC electromechanical relay MPH 1

NO/NCsequentialthree-phase

Phase sequence relay AC 3x 172.5…500 V, 1 changeover contact Contact - 1 change-over Voltage - 3 x 173 V… 3 x 500 V AC Measurements - 90 x 17,6 x 64 mm The phase sequence relay for three-phase networks monitors the sequence of phases L1, L2, and L3 as well as the failure of one or more phases. If the phase sequence and voltage (> 173 V) are correct, the output relay is closed. If the phase sequence is incorrect or if a phase fails, the relay opens. The fixed delay T1 is 500 ms and the adjustable delay T2 is 0.1 to 10 s. If the supply voltage falls below 60% of the nominal value, the relay is immediately switched off without delay and the fault condition is indicated by a red LED. 1 changeover contact; adjustable delay: 0.1…10 s