{"id":7715,"date":"2022-05-19T02:57:59","date_gmt":"2022-05-18T18:57:59","guid":{"rendered":"https:\/\/ancor.biz\/?post_type=product&#038;p=7715"},"modified":"2025-08-18T12:05:53","modified_gmt":"2025-08-18T04:05:53","slug":"dwyer-series-mda-miniature-adjustable-pressure-switch","status":"publish","type":"product","link":"https:\/\/ancor.biz\/index.php\/product\/dwyer-series-mda-miniature-adjustable-pressure-switch\/","title":{"rendered":"DWYER Series MDA Pressure Switch"},"content":{"rendered":"<h1>Series MDA Miniature Adjustable Pressure Switch, Adjustable Set Points from 0.1 to 100&#8243; of H2O<\/h1>\n<p>&nbsp;<\/p>\n<p>Sense differential pressure with the <a href=\"https:\/\/ancor.biz\/index.php\/product-category\/brand\/dwyer-instruments-brand\/\">DWYER<\/a> Series MDA Pressure Switch. The DWYER Series MDA Pressure Switch features field adjustable set point and gold inlay contacts. Air or other compatible fluids can be used on the &#8220;high side&#8221;. 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.<\/p>\n<p><b> NOTE: 50 PIECE MINIMUM ORDER.<\/b><\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"sub_heading\">Product Applications<\/h2>\n<ul class=\"list-details inline product_feature\">\n<li>Industrial<\/li>\n<li>HVAC<\/li>\n<li>Automotive<\/li>\n<li>Medical<\/li>\n<li>Pump and motor control<\/li>\n<li>Pools and spas<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<section id=\"features\" class=\"ui-tabs-panel ui-widget-content ui-corner-bottom\" role=\"tabpanel\" aria-labelledby=\"ui-id-4\" aria-expanded=\"true\" aria-hidden=\"false\">\n<h1 class=\"tab-heading\">Features<\/h1>\n<ul>\n<li>Air or fluid on high side permits multiple uses where both air and liquids exist<\/li>\n<li>Small and lightweight for applications where space is constrained<\/li>\n<li>Gold contacts help ensure a clean connection without dirt or oxidation<\/li>\n<\/ul>\n<\/section>\n<p>&nbsp;<\/p>\n<section id=\"specs\" class=\"ui-tabs-panel ui-widget-content ui-corner-bottom\" role=\"tabpanel\" aria-labelledby=\"ui-id-3\" aria-expanded=\"true\" aria-hidden=\"false\">\n<h1 class=\"tab-heading\">Specifications<\/h1>\n<ul class=\"list-specs lined\">\n<li>Switch Type: SPST normally open.<\/li>\n<li class=\"title\">Switching Media: Air or compatible fluids on \u201chigh side\u201d.<\/li>\n<li class=\"title\">Pressure Limits: MDA-011: 4 psi; MDA-111: 8 psi; MDA-211: 8 psi; MDA-311: 15 psi. MDA-411: 30 psi.<\/li>\n<li class=\"title\">Current Rating: 40 mA resistive for life in excess of 20 million cycles.<\/li>\n<li class=\"title\">Temperature Limits: 40 to 150\u00b0F (4 to 66\u00b0C).<\/li>\n<li class=\"title\">Contacts: 18K gold inlay.<\/li>\n<li class=\"title\">Electrical Connections: Terminals &#8211; 0.187&#8243; x 0.20: spade (recessed) for use with quick disconnects.<\/li>\n<li class=\"title\">Pressure Connections: Smooth port 5\/32&#8243; diameter for 1\/8&#8243; ID tubing.<\/li>\n<li class=\"title\">Housing: Polycarbonate.<\/li>\n<li class=\"title\">Diaphragm Material: Polyurethane.<\/li>\n<li class=\"title\">Operating Voltage: AC\/DC &#8211; 30 V or less with resistive load.<\/li>\n<li class=\"title\">Mounting: Use #4 screws through mounting lugs or #2 screws through eyelets.<\/li>\n<li class=\"title\">Weight: Less than 10 grams.<\/li>\n<\/ul>\n<\/section>\n<p>&nbsp;<\/p>\n<h2 class=\"tab-heading\">Models &amp; Ordering<\/h2>\n<table class=\"product-table\">\n<tbody>\n<tr>\n<th class=\"model-number\" nowrap=\"nowrap\" width=\"\">Model<\/th>\n<th class=\"description\" width=\"\">Description<\/th>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">MDA-011-T<\/td>\n<td class=\"description\" width=\"\">Miniature adjustable pressure switch, min. set point 0.1&#8243; w.c. (0.25 mbar), max. set point 0.5&#8243; w.c. (1.25 mbar).<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">MDA-111<\/td>\n<td class=\"description\" width=\"\">Miniature adjustable pressure switch, min. set point 0.5&#8243; w.c. (1.25 mbar), max. set point 2.0&#8243; w.c. (4.98 mbar).<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">MDA-211<\/td>\n<td class=\"description\" width=\"\">Miniature adjustable pressure switch, min. set point 2.0&#8243; w.c. (4.98 mbar), max. set point 15&#8243; w.c. (37.37 mbar).<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">MDA-311<\/td>\n<td class=\"description\" width=\"\">Miniature adjustable pressure switch, min. set point 15&#8243; w.c. (37.37 mbar), max. set point 60&#8243; w.c. (149.3 mbar).<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">MDA-411<\/td>\n<td class=\"description\" width=\"\">Miniature adjustable pressure switch, min. set point 60&#8243; water (149.3 mbar), max. set point 100&#8243; water (249.10 mbar).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Series MDA Miniature Adjustable Pressure Switch, Adjustable Set Points from 0.1 to 100&#8243; of H2O &nbsp; Sense differential pressure with the DWYER Series MDA Pressure Switch. The DWYER Series MDA Pressure Switch features field adjustable set point and gold inlay contacts. Air or other compatible fluids can be used on the &#8220;high side&#8221;. The lightweight &#8230; <a title=\"DWYER Series MDA Pressure Switch\" class=\"read-more\" href=\"https:\/\/ancor.biz\/index.php\/product\/dwyer-series-mda-miniature-adjustable-pressure-switch\/\" aria-label=\"More on DWYER Series MDA Pressure Switch\">Read more<\/a><\/p>\n","protected":false},"featured_media":7716,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":""},"class_list":["post-7715","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-brand","product_cat-diffrential-pressure","product_cat-dwyer-switch-vacuum","product_cat-dwyer-instruments-brand","product_cat-dwyer-instruments-dwyer-omega","product_cat-dwyer-omega","product_cat-pressure-switch-dwyer-instruments-dwyer-omega","product_cat-switch-vacuum","product_cat-pressure-switch","product_cat-switch","product_tag-dwyer-series-mda-pressure-switch","product_tag-mda-011-t","product_tag-mda-111","product_tag-mda-211","product_tag-mda-311","product_tag-mda-411","product_tag-series-mda","sales-flash-overlay","woocommerce-text-align-center","woocommerce-image-align-center","do-quantity-buttons"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.3 - 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