Models & Ordering

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.

Drawings

• dwg
• pdf
• 3D Drawing

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