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.

NOTE: 50 PIECE MINIMUM ORDER.

Product Applications

Industrial
HVAC
Automotive
Medical
Pump and motor control
Pools and spas

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Build Your Custom Part. Use our Product Configurator

Model	Description	Usually Ships*	Price	Order
MDA-011-T Ships: Same Day Price: $26.45	Miniature adjustable pressure switch, min. set point 0.1" w.c. (0.25 mbar), max. set point 0.5" w.c. (1.25 mbar).	Same Day*	$26.45	Order
MDA-111 Ships: Same Day Price: $25.25	Miniature adjustable pressure switch, min. set point 0.5" w.c. (1.25 mbar), max. set point 2.0" w.c. (4.98 mbar).	Same Day*	$25.25	Order
MDA-211 Ships: Same Day Price: $25.25	Miniature adjustable pressure switch, min. set point 2.0" w.c. (4.98 mbar), max. set point 15" w.c. (37.37 mbar).	Same Day*	$25.25	Order
MDA-311 Ships: Same Day Price: $25.25	Miniature adjustable pressure switch, min. set point 15" w.c. (37.37 mbar), max. set point 60" w.c. (149.3 mbar).	Same Day*	$25.25	Order
MDA-411 Ships: Same Day Price: $25.25	Miniature adjustable pressure switch, min. set point 60" water (149.3 mbar), max. set point 100" water (249.10 mbar).	Same Day*	$25.25	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

     MDA-XXX-OPT    MDA MINIATURE ADJUSTABLE PRESSURE SWITCH
    
          1ST SYMBOL (1ST X) SET POINT RANGE
             0   0.1 - 0.5 IN WC
             1   0.5 - 2 IN WC
             2   2 - 15 IN WC
             3   15 - 60 IN WC
             4   60 - 100 IN WC
             5   0.03 - 0.1 IN WC            
    
          1ST SYMBOL (2ND X) LOW PORT CONNECTION
             1   TOP MOUNT SMOOTH PORT FOR 1/8 ID TUBING
             2   SIDE MOUNT BARB FOR 3/16 ID TUBING
    
          1ST SYMBOL (3RD X) HIGH PORT CONNECTION
             1   TOP MOUNT SMOOTH PORT FOR 1/8 ID TUBING
             2   SIDE MOUNT BARB FOR 3/16 ID TUBING
             3   BOTTOM MOUNT 1/8 MALE NPT CONNECTION
         
          OPTIONS (OPT)
            -PRESET  PRESET SWITCH
            -T       PTFE

          NOTES
            #1. 50 PIECE MINIMUM REQUIRED FOR ALL CONFIGURED ITEMS.

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