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

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

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Model	Description	Usually Ships*	Price	Order
MDA-011 Ships: Next Day Price: $23.75	Miniature adjustable pressure switch, min. set point 0.1" water (0.25 mbar), max. set point 0.5" water (1.25 mbar).	Next Day*	$23.75	Order
MDA-111 Ships: Next Day Price: $23.75	Miniature adjustable pressure switch, min. set point 0.5" water (1.25 mbar), max. set point 2.0" water (4.98 mbar).	Next Day*	$23.75	Order
MDA-211 Ships: Next Day Price: $23.75	Miniature adjustable pressure switch, min. set point 2.0" water (4.98 mbar), max. set point 15" water (37.37 mbar).	Next Day*	$23.75	Order
MDA-311 Ships: Next Day Price: $23.75	Miniature adjustable pressure switch, min. set point 15" water (37.37 mbar), max. set point 60" water (149.3 mbar).	Next Day*	$23.75	Order
MDA-411 Ships: Next Day Price: $23.75	Miniature adjustable pressure switch, min. set point 60" water (149.3 mbar), max. set point 100" water (249.10 mbar).	Next Day*	$23.75	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

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