Series MDA Miniature Adjustable Pressure Switch

Brand: Dwyer Instruments, LLC

Sense differential pressure with the Series MDA Miniature Adjustable Pressure Switch.

The switch features field adjustable set point and gold inlay contacts.

Air or other compatible fluids can be used on the "high side". The lightweight and compact size make the MDA ideal for any application with space constraints.

Applications include industrial, HVac, pump and motor control, medical, automotive, pools and spas.
  • Air or fluid on high side permits multiple uses where both air and liquids exist
  • Small and lightweight for applications where space is constrained
  • Gold contacts help ensure a clean connection without dirt or oxidation


Adjustment Type

  • Factory Set (Pre-Set)
  • Field Adjustable

Approvals & Certifications

  • UL

Diaphragm Material

  • Polyurethane

Electrical Connectors

  • Brass Tab-Typical for Use with Quick Disconnections

Electrical Contacts

  • Gold

Electrical Rating

  • 40 mA Resistive Load Allowing for Life in Excess of 20 Million Cycles

Enclosure, Body Material

  • Polycarbonate

NPT Connection

  • 1/8” NPT Female

Operating Temperature

  • 4° to 66° C (40° to 150° F)

Set Point - Decreasing

  • Inches WC: 0.1 to 100

Set Point - Increasing

  • Inches WC: 0.1 to 100

Switch Type

  • SPST

System Pressure

  • Inches WC: 0.1 to 100

  • Industrial
  • HVAC
  • Automotive
  • Medical
  • Pump and Motor Control
  • Pools and Spas


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