Pressure switch Series MDR; Suitable for Compressors; 3-pin; Protection class IP54; Switching capacity for 3-phase current 5,5kW (400V), At AC 2,5kW (230V); Hysteresis range adjustable; Overpressure protection 16bar; Female thread 1/2"; Relief valve, Mechanical ON/OFF-switch; Range of adjustment 2...11bar