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Pressure switch MDR 2i

Technical specifications

Air, Water
Voltage type
Alternating current (AC) – single-phase
≤ 250 V
Contact function
2 NC contacts
Gold-plated contacts
Pressure adjustment
Pressure difference adjustment (standard)
Pressure range (bar)
≤ 16 Bar
Pressure coupling

G1/4" female thread or pressure connector connection = die-cast aluminium

Overload relay
not possible
Cable entry gland

without (accessory M20)

Relief valve
without (accessory EV, AEV)
Rated frequency
50 Hz / 60 Hz
Rated operating current (Ie)

16 A

max. media temperature


Motor switching capacity
2,2 kW
Protection class
IP 54, IP 41

Short Description

The electronic pressure switch is suitable for a wide range of industrial and technical processes, e.g. for pressure monitoring and control of compressors and pumps, in mechanical engineering and in plant construction. The MDR-2i is fitted with a coupling for an external pressure relief valve and a 3-digit LCD display with various functions such as e.g. operating hours counter, alarm output, etc. Optionally, the pressure switch can be fitted with an (integral) pressure relief valve.


  • Pneumatics
  • Compressors
  • Shipbuilding & offshore
  • Railway technology & vehicle technology
  • Pumps
  • Agriculture

Certicates & Permits

  • UL -Listed

At a glance

  • AC version
  • Voltage ≤250 V
  • Switching function "2 x NC"
  • Pressure ranges ≤16 bar
  • integral pressure relief valve (optional)
  • coupling for external pressure relief valve
  • Two-point control (switching point / switch-back point)
  • Die-cast aluminium pressure connector

The two-point control permits precise and convenient programming of the switching functions (switching point / switch-back point), adjustable in bar or psi (accuracy 0.1 bar / 1 psi). 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.

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Tel: + 49 2587 89 - 0