Pressure switch MDR F..HV
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Technical specifications
- Medium
- Air, Water
- Voltage type
- Alternating current (AC) – single-phase
- Type
- Electro-mechanical
- Voltage
- ≤ 250 V
- Contact function
- 1 change-over contact
- Gold-plated contacts
- optional
- Pressure adjustment
- Pressure difference adjustment (standard)
- Pressure range (bar)
- ≤ 32 Bar
- Pressure coupling
G3/8" female thread (main pressure coupling G3/8", pressure connector material = die-cast aluminium + Viton® diaphragm)
- Overload relay
- not possible
- Cable entry gland
with 1 x WN (sealing grommet)
(accessory M20)
- Relief valve
- no EV or AEV possible
- Rated frequency
- 50 Hz / 60 Hz
- Rated operating current (Ie)
10 (4) A
- max. media temperature
130°C
- Motor switching capacity
- 0,55 kW
- Protection class
- IP 54, IP 65
Applications
At a glance
- Control pressure switch for AC voltage
- for pumps / for compressors
- Viton® diaphragm for increased media resistance
- Die-cast aluminium pressure connector
- Motor switching capacity 0.55 kW
- Cut-out pressure ≤32 bar
- 1-pole (change-over)
MDR-F pressure switches are available in different versions and are suitable for universal use. Depending on version, they are used for monitoring and control of pressure in liquids and gases, for process control tasks, for pressure monitoring in cooling & lubrication systems and for automatic switching of compressor and pump motors. MDR-F..HV – Version with Viton® diaphragm for increased media resistance. Fitted with a die-cast aluminium pressure connector, the pressure switches are approved up to ≤32 bar and are also fitted with an industrial screw clamp. The pressure switch MDR-F..HV is fitted as standard with the possibility for pressure difference adjustment. Two adjusting screws (P1 and P2) permit switching point and hysteresis to be adjusted, whereby the cut-out pressure is adjusted with screw P1. Pressure difference and thereby the cut-in point is adjusted with screw P2. By selecting a pair of values for cut-in and cut-out pressures, an intersection point is determined in the diagram. If the point lies within the shaded area, this pair of values can be adjusted on the pressure switch. If the point lies outside the shaded area, this pair of values cannot be adjusted on the pressure switch. Other versions of MDR-F..HV pressure switches are available on request (e.g. as Reset pressure switch, with gold-plated contacts, with plastic pressure connector, etc.). We would be pleased to help you find customer-specific solutions for your special applications.









