{"id":54387,"date":"2025-09-03T12:50:47","date_gmt":"2025-09-03T04:50:47","guid":{"rendered":"https:\/\/ancor.biz\/?post_type=product&#038;p=54387"},"modified":"2025-09-23T15:18:06","modified_gmt":"2025-09-23T07:18:06","slug":"omega-psw-100-general-purpose-pressure-switches-in-nema-4x-enclosures","status":"publish","type":"product","link":"https:\/\/ancor.biz\/index.php\/product\/omega-psw-100-general-purpose-pressure-switches-in-nema-4x-enclosures\/","title":{"rendered":"Omega PSW-100  Pressure Switches In NEMA-4X Enclosures"},"content":{"rendered":"<h1>PSW-100 General Purpose Pressure Switches, In NEMA-4X Enclosures<\/h1>\n<p>&nbsp;<\/p>\n<div>\n<p><span class=\"descCopyPP\">OMEGA&#8217;s affordable, general purpose pressure switches offer distinct advantages over most similar style switches, including DPDT or adjustable deadband switches, as well as a wide selection of adjustable ranges from 0.5 inH<sub>2<\/sub>O to 3000 psi.<\/span><\/p>\n<p><b>SPECIFICATIONS<\/b><br \/>\n<b>Approval: <\/b>UL listed,<br \/>\n<b>Storage Temperature: <\/b>-55 to 70\u00b0C (-67 to 158\u00b0F)<br \/>\n<b>Process Temperature:<\/b><br \/>\n<b>Stainless Steel: <\/b>-55 to 205\u00b0C (-67 to 401\u00b0F)<br \/>\n<b>Phosphor Bronze: <\/b>-40 to 150\u00b0C (-40 to 302\u00b0F)<br \/>\n<b>Buna-N: <\/b>-25 to 95\u00b0C (-13 to 203\u00b0F)<br \/>\n<b>Ambient Temperature: <\/b>-40 to 70\u00b0C (-40 to 158\u00b0F), except models PSW-107 to PSW-117 and PSW-134 to PSW-139: -20 to 70\u00b0C (-4 to 158\u00b0F). Setpoint typically shifts less than 1% of range for a 30\u00b0C (54\u00b0F) ambient temperature change.<br \/>\n<b>Shock: <\/b>Setpoint repeats after 15 g, 10 ms duration.<br \/>\n<b>Vibration: <\/b>Setpoint repeats after 2.5 g, 5 to 500 Hz<br \/>\n<b>SetPoint Repeatability: <\/b>All models \u00b11% of adjustable range, except models PSW-118 to PSW-125 and PSW-132 to PSW-133 are \u00b11.5%<br \/>\n<b>Switch Output: <\/b>One SPDT or DPDT switch may be wired normally open or normally closed<br \/>\n<b>Electrical Rating: <\/b>Standard 15 A 125\/250\/480 Vac resistive External Manual Reset: 15 A 125\/250 Vac resistive Double Pole Double Throw: 10 A 125\/250 Vac resistive<br \/>\n<b>Enclosure: <\/b>Die cast aluminum (max. 0.6% copper). Epoxy-coated blue enclosure, gasketed, complies with NEMA-4X<br \/>\n<b>Weight: <\/b>Approximately 0.9 kg (2 lb)<br \/>\n<b>Electrical Connection: <\/b>1\/2 NPT and Two 7\/8&#8243; diameter knockouts<br \/>\n<b>Dimensions: <\/b>191 max H x 101 W x 60 mm D (7.5 max 4 x 2.3&#8243;)<\/p>\n<\/div>\n<div><\/div>\n<div>\n<div id=\"divider1\" class=\"categoryHeadingTable\">\n<div class=\"categoryTitle\"><strong>Buna-N Diaphragm and O-Ring, 1\/4 FNPT Nickel-Plated Brass Pressure Connection<\/strong><\/div>\n<\/div>\n<div id=\"NonStockItem1\">\n<div class=\"orderRowTable greyRowTable pbPopupWrap\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"maxColumn\"><\/div>\n<div class=\"partNumbColumn bold blueFont\">PSW-107 : 1.5 to 30 psi switch with Buna-N diaphragm &amp; O-ring, 600 psi proof pressure, 1\/4 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem2\">\n<div class=\"orderRowTable whiteRowTable pbPopupWrap\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-108 : 3 to 100 psi switch with Buna-N diaphragm &amp; O-ring, 600 psi proof pressure, 1\/4 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<div id=\"div_assoc2\">PSW-109 : 3 to 100 psi switch with Buna-N diaphragm &amp; O-ring, 600 psi proof pressure, 1\/4 NPTF fitting, 15 Amp SPDT switch, and external manual reset<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem3\">\n<div class=\"orderRowTable greyRowTable\">\n<div id=\"div_assoc3\">PSW-110 : 3 to 100 psi switch with Buna-N diaphragm &amp; O-ring, 600 psi proof pressure, 1\/4 NPTF fitting, and 10 Amp DPDT switch<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem4\">\n<div class=\"orderRowTable whiteRowTable\">\n<div id=\"div_assoc4\">PSW-111 : 3 to 100 psi switch with Buna-N diaphragm &amp; O-ring, 600 psi proof pressure, 1\/4 NPTF fitting,15 Amp SPDT switch and adjustable dead band<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem5\">\n<div class=\"orderRowTable greyRowTable\">\n<div id=\"div_assoc5\">PSW-112 : 9 to 300 psi switch with Buna-N diaphragm &amp; O-ring, 600 psi proof pressure, 1\/4 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem6\">\n<div class=\"orderRowTable whiteRowTable pbPopupWrap\">\n<div id=\"div_assoc6\">PSW-113 : 9 to 300 psi switch with Buna-N diaphragm &amp; O-ring, 600 psi proof pressure, 1\/4 NPTF fitting,15 Amp SPDT switch and adjustable dead band<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem8\">\n<div class=\"orderRowTable whiteRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-114 : 15 to 500 psi switch with Buna-N diaphragm &amp; O-ring, 2500 psi proof pressure, 1\/4 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem9\">\n<div class=\"orderRowTable greyRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-115 :\u00a015 to 500 psi switch with Buna-N diaphragm &amp; O-ring, 2500 psi proof pressure, 1\/4 NPTF fitting,15 Amp SPDT switch and adjustable dead band<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem10\">\n<div class=\"orderRowTable whiteRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-116 : 15 to 500 psi switch with Buna-N diaphragm &amp; O-ring, 2500 psi proof pressure, 1\/4 NPTF fitting,15 Amp SPDT switch and external manual reset<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem11\">\n<div class=\"orderRowTable greyRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-117 : 30 to 1000 psi switch with Buna-N diaphragm &amp; O-ring, 2500 psi proof pressure, 1\/4 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"divider13\" class=\"categoryHeadingTable\">\n<div><\/div>\n<div class=\"categoryTitle\"><strong>Buna-N Diaphragm, O-Ring and 1\/2 FNPT Aluminum Pressure Connection<\/strong><\/div>\n<\/div>\n<div id=\"NonStockItem12\">\n<div class=\"orderRowTable greyRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"maxColumn\"><\/div>\n<div class=\"partNumbColumn bold blueFont\">PSW-135 : +\/- 10 in H2O pressure switch with Buna-N diaphragm &amp; O-ring, 100 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem13\">\n<div class=\"orderRowTable whiteRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-136 : +\/- 50 in H2O pressure switch with Buna-N diaphragm &amp; O-ring, 100 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem14\">\n<div class=\"orderRowTable greyRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-138 : 2.5 to 50 in H2O pressure switch with Buna-N diaphragm &amp; O-ring, 100 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"divider17\" class=\"categoryHeadingTable\">\n<div><\/div>\n<div class=\"categoryTitle\"><strong>316 SS Diaphragm and 1\/2 FNPT Pressure Connection<\/strong><\/div>\n<\/div>\n<div id=\"NonStockItem15\">\n<div class=\"orderRowTable greyRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"maxColumn\"><\/div>\n<div class=\"partNumbColumn bold blueFont\">PSW-104 : 1 to 20 psi switch with 316SS, 500 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem16\">\n<div class=\"orderRowTable whiteRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-105 : 2 to 50 psi switch with 316SS, 500 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem17\">\n<div class=\"orderRowTable greyRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-118 : 5 to 30 psi switch with 316SS, 2500 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem18\">\n<div class=\"orderRowTable whiteRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-120 : 10 to 100 psi switch with 316SS, 2500 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem19\">\n<div class=\"orderRowTable greyRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-121 : 15 to 300 psi switch with 316SS, 2500 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem20\">\n<div class=\"orderRowTable whiteRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-123 : 15 to 300 psi switch with 316SS, 2500 psi proof pressure, 1\/2 NPTF fitting, 15 Amp SPDT switch and adjustable dead band<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem21\">\n<div class=\"orderRowTable greyRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-124 : 20 to 500 psi switch with 316SS, 2500 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem22\">\n<div class=\"orderRowTable whiteRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"partNumbColumn bold blueFont\">PSW-125 : 80 to 1700 psi switch with 316SS, 2500 psi proof pressure, 1\/2 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<div id=\"div_assoc22\"><\/div>\n<\/div>\n<\/div>\n<div id=\"divider26\" class=\"categoryHeadingTable\">\n<div class=\"categoryTitle\"><strong>Phosphor Bronze Bellows and 1\/4 FNPT Pressure Connection<\/strong><\/div>\n<\/div>\n<div id=\"NonStockItem23\">\n<div class=\"orderRowTable whiteRowTable\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"maxColumn\"><\/div>\n<div class=\"partNumbColumn bold blueFont\">PSW-127: 30 to 0 in Hg vacuum switch with Phosphor bronze bellows, 0 psi proof pressure, 1\/4 NPTF fitting and 15 Amp SPDT switch<\/div>\n<div><\/div>\n<div class=\"partNumbColumn bold blueFont\"><strong>303 SS Piston, Buna O-Ring and 1\/4 FNPT Pressure Connection<\/strong><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"NonStockItem24\">\n<div class=\"orderRowTable whiteRowTable pbPopupWrap\">\n<div class=\"toOrderInfoWrap\">\n<div class=\"maxColumn\"><\/div>\n<div class=\"partNumbColumn bold blueFont\">PSW-133 : 125-3000 psi switch with 303SS piston and Buna-N O-ring, 10000 psi proof pressure, 1\/4 NPTF fitting and 15 Amp SPDT switch<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>PSW-100 General Purpose Pressure Switches, In NEMA-4X Enclosures &nbsp; OMEGA&#8217;s affordable, general purpose pressure switches offer distinct advantages over most similar style switches, including DPDT or adjustable deadband switches, as well as a wide selection of adjustable ranges from 0.5 inH2O to 3000 psi. SPECIFICATIONS Approval: UL listed, Storage Temperature: -55 to 70\u00b0C (-67 to &#8230; <a title=\"Omega PSW-100  Pressure Switches In NEMA-4X Enclosures\" class=\"read-more\" href=\"https:\/\/ancor.biz\/index.php\/product\/omega-psw-100-general-purpose-pressure-switches-in-nema-4x-enclosures\/\" aria-label=\"More on Omega PSW-100  Pressure Switches In NEMA-4X Enclosures\">Read more<\/a><\/p>\n","protected":false},"featured_media":54390,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":""},"class_list":["post-54387","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-brand","product_cat-dwyer-omega","product_cat-omega-engineering","product_cat-omega-engineering-switch-vacuum","product_cat-switch-vacuum","product_cat-pressure-switch-omega-engineering","product_cat-pressure-switch-omega","product_cat-switch","product_cat-omega","product_tag-omega-psw-100","product_tag-psw-100","product_tag-psw-104","product_tag-psw-105","product_tag-psw-107","product_tag-psw-108","product_tag-psw-109","product_tag-psw-110","product_tag-psw-111","product_tag-psw-112","product_tag-psw-113","product_tag-psw-114","product_tag-psw-115","product_tag-psw-116","product_tag-psw-117","product_tag-psw-118","product_tag-psw-120","product_tag-psw-121","product_tag-psw-123","product_tag-psw-124","product_tag-psw-125","product_tag-psw-127","product_tag-psw-133","product_tag-psw-135","product_tag-psw-136","product_tag-psw-138","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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