{"product_id":"ps-40-ex-potter-explosion-proof-pressure-supervisory-switch-for-fire-sprinkler-systems","title":"PS-40-EX | Potter Explosion-Proof Pressure Supervisory Switch for Fire Sprinkler Systems","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"144\" data-end=\"396\"\u003eThe Potter PS-40-EX Explosion-Proof Pressure Supervisory Switch is a rugged device designed to detect abnormal pressure conditions in fire sprinkler systems installed in hazardous locations. Built with a durable cast aluminum enclosure, this model (part number PS-40-EX) is UL, FM, and CSFM approved for use in Class I, II, and III, Division 1 areas. It provides reliable performance under harsh environmental conditions and ensures compliance with NFPA-13 and NFPA-72 standards for fire protection systems.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 99.9988%; height: 431.215px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003ePotter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eFire Sprinkler System Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003ePS-40-EX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eExplosion-Proof Pressure Supervisory Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003ePressure Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003e10–175 PSI (0.7–12.1 BAR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eFactory Settings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eDecrease at 30 PSI (2.1 BAR); Increase at 50 PSI (3.5 BAR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 39.2014px;\"\u003e\u003cstrong\u003eMaximum System Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 39.2014px;\"\u003e250 PSI (17.24 BAR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eSwitch Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eTwo SPDT (Form C) contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eElectrical Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003e15A at 125\/250 VAC; 2A at 30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eEnclosure Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eCast aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eEnclosure Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eNEMA 4 and 9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003ePressure Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003e1\/2\" NPT male brass fitting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eConduit Entrance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003e1\/2\" NPT female conduit opening\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003e-40°F to 140°F (-40°C to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eUL, FM, CSFM, CUL, NYMEA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eHazardous Location Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eClass I (Groups B, C, D), Class II (E, F, G), Class III, Div. 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eNFPA-13 and NFPA-72\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003e6\" W × 7\" H (152 mm × 178 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 30.9561%; height: 19.6007px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.905%; height: 19.6007px;\"\u003e4.8 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003e\n\u003cspan data-sheets-root=\"1\"\u003ePS-40-EX\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe PS-40-EX is an explosion-proof pressure switch from Potter’s industrial-grade supervisory line, engineered for automatic sprinkler and fire alarm systems. It operates within a pressure range of 10 to 175 PSI and comes factory set with dual switch points—one for low pressure (30 PSI) and one for high pressure (50 PSI). The unit includes two SPDT (Form C) contacts capable of switching up to 15 amps at 250 VAC, providing dependable control and monitoring. Designed for use in hazardous, indoor, or outdoor environments, its NEMA 4 and 9 rated cast aluminum housing ensures weather resistance and safety in explosive atmospheres.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExplosion-Proof Design: Certified for Class I, II, and III, Division 1 hazardous locations to ensure operational safety.\u003c\/li\u003e\n\u003cli\u003eDual Pressure Monitoring: Detects both high and low pressure deviations from normal system operation.\u003c\/li\u003e\n\u003cli\u003eWide Pressure Range: Adjustable between 10 and 175 PSI to suit a variety of system requirements.\u003c\/li\u003e\n\u003cli\u003eRugged Construction: Cast aluminum enclosure rated NEMA 4 and 9 for corrosion resistance and durability.\u003c\/li\u003e\n\u003cli\u003eHigh Electrical Capacity: Two SPDT (Form C) contacts rated 15A at 125\/250 VAC and 2A at 30 VDC.\u003c\/li\u003e\n\u003cli\u003eTemperature Resilience: Operates reliably in environments from -40°F to 140°F (-40°C to 60°C).\u003c\/li\u003e\n\u003cli\u003eEasy Installation: Includes 1\/2\" NPT brass pressure connection and 1\/2\" NPT conduit entrance.\u003c\/li\u003e\n\u003cli\u003eCode Compliance: Meets NFPA-13 and NFPA-72 standards for sprinkler and alarm systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe PS-40-EX delivers the reliability and precision required for explosion-proof fire sprinkler pressure monitoring and supervisory applications.\u003c\/p\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":49105144086784,"sku":"PS-40-EX","price":1461.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/PS-40-EX-POTTER_1.png?v=1785541225","url":"https:\/\/alotechparts.com\/products\/ps-40-ex-potter-explosion-proof-pressure-supervisory-switch-for-fire-sprinkler-systems","provider":"Alo Tech Solutions","version":"1.0","type":"link"}