Used in air conditioning units, elevator machine room, pumps, fans and other
motor control applications, as protection of over-voltage, under voltage,phase failure, phase sequence, phase imbalance and PTC temperature. Whenthe power supply is abnormal, turn off power supply to protect the
equipment.
Built-in microprocessor, true RMS measurement, measurement accuracy <1%50/60Hz universal, knob setting, LED indicator shows working status. With N-phase phase failure protection, unique load-side and PTC temperatureprotection, optional manual reset and key test function, DIN rail mounting.