They're available with options such as manual control and additional connection ports. The switches are made from die-cast aluminium.

Choose from a wide range of switch capacities. The setting pressure range for these compressor pressure switches is from 0.5 to 35 bar (from 7 to 508 psi). These pressure switches are available with two different types of contacts: normally closed (NC) and changeover contacts. The Condor MDR pressure switches are especially developed for use with air compressors, water pumps and some versions even for a wide range of other media (MDR-3-.-RM). If used as a compressor switch, we recommend to not set the pressure differential too low (<1 bar or 14 psi) to prevent the compressor from switching on and off at high frequency. Use the pressure diagram to check if the combination of cut-in and cut-out pressure is within the shaded area. Note that the pressure differential has a smaller screw. The cut-in pressures (the pressure at which the compressor starts) and the pressure differential can be adjusted with set screws. The difference is called the pressure differential. A detailed overview of diaphragm media resistance for all pressure switches can be found on page 2.11. The upper and lower pressure switching points are called respectively the cut-out and cut-in pressure. For water it can be used to start and stop pumps or activate alarms when a set pressure is reached. As an air compressor switch it controls the air pressure in the tank by switching on and off the compressor. This switch is excellent for use as an air compressor switch or to control water pumps. It has a robust aluminium die-cast flange with a G 1/4 inch connection port and SBR/NBR sealings. The switching capacity is 1-phase 1.1 kW 120 V AC or 2.2 kW 230 V AC (according EN 60947). Suitable for air and water from -5 to 80☌ (23 to 176☏). The Condor MDR-2-11 pressure switch has a setting range from 4 to 12 bar (58 to 174 psi) and 2-pole normally closed (NC) contacts (DPST).

Condor mdr2 11 manual