Series MDS Miniature Pressure Switch

Shock and Vibration Resistant, Lightweight and Compact, Gold Contacts

Series MDA Miniature Adjustable Pressure Switch is used to sense differential pressure. The switch features field adjustable set point and gold inlay contacts. 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.

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Product Applications

Air proving
Ventilation flow
Exhaust ducts
Cleaning and purification
Heavy equipment and machinery
Pressure monitoring

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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
MDS-0 Ships: Same Day Price: $36.75	Miniature pressure switch, set point 0.5" H2O.	Same Day*	$36.75	Order
MDS-1 Ships: 7-8 Weeks Price: $36.75	Miniature pressure switch, set point 1.0" H2O.	7-8 Weeks*	$36.75	Order
MDS-10 Ships: 5-6 Weeks Price: $36.75	Miniature pressure switch, set point 15.0" H2O.	5-6 Weeks*	$36.75	Order
MDS-12 Ships: 7-8 Weeks Price: $36.75	Miniature pressure switch, set point 30.0" H2O.	7-8 Weeks*	$36.75	Order
MDS-14 Ships: 7-8 Weeks Price: $36.75	Miniature pressure switch, set point 50.0" H2O.	7-8 Weeks*	$36.75	Order
MDS-2 Ships: 7-8 Weeks Price: $36.75	Miniature pressure switch, set point 1.5" H2O.	7-8 Weeks*	$36.75	Order
MDS-3 Ships: 7-8 Weeks Price: $36.75	Miniature pressure switch, set point 2.0" H2O.	7-8 Weeks*	$36.75	Order
MDS-4 Ships: 7-8 Weeks Price: $36.75	Miniature pressure switch, set point 3.0" H2O.	7-8 Weeks*	$36.75	Order
MDS-6 Ships: 7-8 Weeks Price: $36.75	Miniature pressure switch, set point 6.0" H2O.	7-8 Weeks*	$36.75	Order
MDS-7 Ships: 7-8 Weeks Price: $36.75	Miniature pressure switch, set point 8.0" H2O.	7-8 Weeks*	$36.75	Order
MDS-8 Ships: Same Day Price: $36.75	Miniature pressure switch, set point 10.0" H2O.	Same Day*	$36.75	Order

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Specifications

Switch Type:: SPST normally open.
Switching Media:: Air or compatible fluids on "high" side.
Pressure Limits:: Set point <3.0 in. H2O: 8 psi; Set point >3.0 in. H2O: 15 psi.
Current Rating:: Gold contact switch providing maximum 40 mA resistive load allowing for life in excess of 20 million cycles.
Temperature Limits:: 40° to 150°F (4° to 66°C).
Electrical Connections:: Brass tab-type for use with quick disconnections.
Pressure Connections:: Two barbed ports for use with 1/8"-3/16" ID tubing.
Housing:: Polycarbonate.
Diaphragm Material:: Polyurethane.
Operating Voltage:: AD/DC - 30 V or less with resistive load.
Weight:: Less than 0.353 oz (10 g).

Features

Low cost, long service life and fast response time is suitable for a wide range of OEM uses
Lightweight but shock and vibration resistant for tough applications
Gold contacts help ensure a clean connection without dirt or oxidation

Model Chart

EXAMPLE	MDS	0	Series MDS Miniature Pressure Switch, range 0.5" w.c., with preset option.
SERIES	MDS		Miniature Pressure Switch
SET POINT RANGE		0 1 2 3 4 6 7 8 15 10 11 12 14	0.5" w.c. 1.0" w.c. 1.5" w.c. 2.0" w.c. 3.0" w.c. 6.0" w.c. 8.0" w.c. 10.0" w.c. 12.0" w.c. 15.0" w.c. 20.0" w.c. 30.0" w.c. 50.0" w.c.

Product Literature

Catalog Pages

Series MDS Catalog Page

Product Data Sheet

Approvals

RoHS Letter of Compliance

Drawings

Questions

Question

For which pressure switch applications are gold contacts recommended?

Answer

For "dry circuit" applications where little or no current is flowing in the circuit to help burn off contact dirt and oxidation. Switches used with solid state circuits often fall in this category.

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