3 Phase Voltage Monitors   The PLMU Series continuously measures the voltage of each of the three phases to provide protection for three phase motors and sensitive loads. Its microcontroller senses under and over voltage, voltage unbalance, phase loss, and phase reversal. Protection is provided even when regenerated voltages are present. Universal voltage operation and standard base connection allows the PLMU to replace hundreds of competitive part numbers.
3 Phase Universal Power Alert   The UPA 130 Power Alert reduces the risk of electrical arc flash bypre-verifying the electrical isolation from outside of a control anel.Hardwired to the circuit breaker or main disconnect, the UPA flasheswhenever voltage is present. Engineered with redundant circuitry, thePower Alert is powered by the same volatage that it indicates .