Micropro cessor technology offers highly accurate and repeatable protection Integrated LCD and keypad provide accurate setup. 43mm compact modular housing Adjustable overvoltage and undervoltage, phase unbalance threshold. Independently adjustable delay time for overvoltage, undervoltage phase unbalance Adjustable reset method Automatic reset manual reset 1 NO & INC contacts. Fault recording with the last 3 faults Protection functions: yes Phase loss (fault) Phase sequence (inversion) Phase unbalance (asymmetry) Low voltage Overvoltage Applications: Pumps, Fans, Refrigeration Unit, Blowers, Motors, Compressors, Elevators, Elevators, , Mining Excavators and Conveyors Rated voltage: 380V 50-60Hz, operating range: 300-490VAC Main component: Voltage relay Contact load: Low power Model Number: TOMPD-8S Protection function: SEALED Power Source: AC Usage: colour:White Material:plastic size:80 x 54 x 54mm Package Contents: 5 x Voltage protector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.