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Pressure switch MDR F..H…LF

Technical specifications

Medium
Air, Water, Oil
Voltage type
Alternating current (AC) – single-phase
Type
Electro-mechanical
Voltage
≤ 250 V
Contact function
2 change-over contact
Gold-plated contacts
no
Pressure adjustment
Pressure difference adjustment (standard)
Pressure range (bar)
≤ 32 Bar
Pressure coupling

G3/8" female thread (main pressure coupling 3/8", pressure connector material = die-cast aluminium + NBR 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

70°C

Motor switching capacity
0,55 kW
Protection class
IP 54, IP 65

Short Description

Control pressure switch with 2 change-over contacts, fitted with a die-cast aluminium pressure connector and NBR diaphragm. Primarily for use in oil, water and air, the version with 2 change-over contacts permits even more flexible applications.

Applications

  • Pumps
  • Railway technology & vehicle technology
  • Mining & chemistry
  • Agriculture
  • Compressors

At a glance

  • Control pressure switch for AC voltage
  • for pumps / for compressors
  • for oil, water and air ..
  • Die-cast aluminium pressure connector & NBR diaphragm
  • 2-pole (2x change-over)
  • Motor switching capacity 0.55 kW
  • Cut-out pressure ≤32 bar

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..H…LF– Version with 2 change-over contacts, die-cast aluminium pressure connector and NBR diaphragm. Primarily for use in oil, water and air, the version with 2 change-over contacts permits even more flexible applications, with industrial screw clamp; optional accessories are available. The pressure switch MDR-F..H...LF 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. Because of the wide range of pressure switch versions, please contact us if you have questions on a special application or have technical requirements. As a manufacturer of pressure switches and controls, we offer a wide range of services, including standard and customer-specific solutions for individual applications.

MDR F M20 K

MDR F M20 K

MDR F M20 K
MDR F M20 M

MDR F M20 M

MDR F M20 M
MDR F D-32

MDR F D-32

MDR F D-32
MDR F D-+32

MDR F D-+32

MDR F D-+32
MDR-F hood

MDR-F hood

MDR-F hood
MDR-F hood R

MDR-F hood R

MDR-F hood R
MDR-F hood, alum.

MDR-F hood, alum.

MDR-F hood, alum.
MDR F RT-1

MDR F RT-1

MDR F RT-1

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