A device that is used to control the fall  of the voltage of one or more phases and their  asymmetry sequence 

in three-phase circuits 400 Vol ac.

* The output relay is activated when the supply and the sequence of three phase is correct.

* Ability to set the overvoltage and undervoltage limit.

* 3 sec delay at on and 1 sec delay at cut off time. 

SPECIFICATIONS

Supply voltage:                                                400 V ac ~ / 50HZ

Contact relay output:                                      10A 250V ~

Connection Mode:                                          Rail Type 6 PINS

Housing:                                                           Self extinguishing 

                                                                           plastic box 2 module

Protection class:                                              IR20V

Operating temperature:                                 -20 +50 C (-4 +122 F)

Indicator LED:                                               Indicator relay ON operation

                                                                        Indicator relay supply

Accuracy                                                        -25% per phase or -15% in

                                                                        three phases together