Series MDA Miniature Adjustable Pressure Switch

Adjustable Set Points from 0.1 to 100" of H2O

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.

Product Applications

  • Industrial
  • HVAC
  • Automotive
  • Medical
  • Pump and motor control
  • Pools and spas

Models & Ordering

Build Your Custom Part. Use our Product Configurator

Model Description Usually Ships Price Order
MDA-011
Ships: Same Day
Price: $23.25
Miniature adjustable pressure switch, min. set point 0.1" water (0.25 mbar), max. set point 0.5" water (1.25 mbar). Same Day $23.25 Order
MDA-111
Ships: Same Day
Price: $23.25
Miniature adjustable pressure switch, min. set point 0.5" water (1.25 mbar), max. set point 2.0" water (4.98 mbar). Same Day $23.25 Order
MDA-211
Ships: Same Day
Price: $23.25
Miniature adjustable pressure switch, min. set point 2.0" water (4.98 mbar), max. set point 15" water (37.37 mbar). Same Day $23.25 Order
MDA-311
Ships: Same Day
Price: $23.25
Miniature adjustable pressure switch, min. set point 15" water (37.37 mbar), max. set point 60" water (149.3 mbar). Same Day $23.25 Order
MDA-411
Ships: Same Day
Price: $23.25
Miniature adjustable pressure switch, min. set point 60" water (149.3 mbar), max. set point 100" water (249.10 mbar). Same Day $23.25 Order

Can't find what you need? Build Your Custom Part. Use our Product Configurator

Specifications

Switch Type:
SPST normally open.
Switching Media:
Air or compatible fluids on “high side”.
Pressure Limits:
MDA-011: 4 psi; MDA-111: 8 psi; MDA-211: 8 psi; MDA-311: 15 psi. MDA-411: 30 psi.
Current Rating:
40 mA resistive for life in excess of 20 million cycles.
Temperature Limits:
40 to 150°F (4 to 66°C).
Contacts:
18K gold inlay.
Electrical Connections:
Terminals - 0.187" x 0.20: spade (recessed) for use with quick disconnects.
Pressure Connections:
Smooth port 5/32" diameter for 1/8" ID tubing.
Housing:
Polycarbonate.
Diaphragm Material:
Polyurethane.
Operating Voltage:
AC/DC - 30 V or less with resistive load.
Mounting:
Use #4 screws through mounting lugs or #2 screws through eyelets.
Weight:
Less than 10 grams.

Features

  • 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

Model Chart

EXAMPLE MDA 5 1 1 NPT Series MDA-511-NPT Miniature Adjustable Pressure Switch, set point range 0.03-0.1" w.c., top tubing connections for low and high port, with 1/8" NPT connection.
SERIES MDA         Miniature Adjustable Pressure Switch
SET POINT
RANGE
  5
0
1
2
3
4
      0.03-0.1" w.c.
0.1-0.5" w.c.
0.5-2" w.c.
2-15" w.c.
15-60" w.c.
60-100" w.c.
LOW PORT
CONNECTION
    1
2
    Top 5/32" Tubing Connection
Right 5/32" Tubing Connection
HIGH PORT
CONNECTION
      1
2
  Top 5/32" Tubing Connection
Right 5/32" Tubing Connection
OPTIONS         NPT
PRESET
T
1/8" NPT Connection
Preset
T Diaphragm

Product Literature

Catalog Pages

Drawings

Photo Downloads

You must be logged in to view this content.
Click here to login to your account.