Motor Purge Control System MPC

for Zone 1 and 2



  • Automatically functioning Ex px purge system for electric motors
  • Fail-safe control – SIL 2
  • Purging/operation status display


Zone 1, ATEX:
Ex II 2(1)G Ex de [ia Ga px] IIC T4 Gb
Zone1, IECEx:
Ex de [ia Ga px] IIC T4 Gb
Zone 2, ATEX:
Ex II 3G Ex nA nC [ic pz] IIC T4 Gc



Ambient temperature

-20 °C to +40 °C


DMT 99 ATEX E 082
IECEx BVS 13.0039
NEPSI GYJ13.1200
CSA 2654548
KCS KTL 13-KB4BO-0634
NCC 14.02972 X


Motor Purge Control System consisting of a Motor Purge Controller – MPC and a Motor Purge Valve – MPV (outlet valve) is a unit allowing a safe operation of electric motors in a hazardous environment.

The explosion protection is ensured by means of a pressurised enclosure with leakage loss compensation. The Motor Purge Control System monitors, controls and regulates the purging gas supply for the Ex p motor.

Any malfunctioning in the system or the purging gas supply will be reported reliably and deactivated by safely isolating the Ex p motor.

Technical data *

Protection class IP 55 (internal components IP 65)
Structure inside the protective housing
Dimensions see data sheet
Material Enclosure material: sheet steel (stainless steel on request)
Varnish: RAL 7035
Pressure Pressure measuring range: 0 to 25 mbar
Purging time Purge time: 0 to 99 minutes (settable)
Pipe fittings Supply of purge gas
R 1″ internal thread MPC S2
R 1½” internal thread MPC S3
R 1″ internal thread
Signal lines:
3 x pipe connection 10 mm
Voltage AC 230 V (AC 115 V) ± 10 %
Power P = approx. 20 W/AC 230 V
Connection Connection terminals: 2.5 mm²

*Refer to the documentation for more detailed information


Data Sheet - Motor Purge Control System MPC

Declaration of Conformity 01-3711-7C0003

Declaration of Conformity A1-3711-7C0001

Operating Instructions Motor Purge Control System