{"product_id":"141-0574-siemens-differential-static-pressure-airflow-switch","title":"141-0574 | Siemens Differential Static Pressure Airflow Switch","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eThe Siemens 141-0574 is a differential static pressure airflow switch designed for HVAC systems.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIt features a field-adjustable setpoint range of 0.05\" to 1.0\" WC, SPDT auto-reset contacts, and operates within a -40°F to 180°F ambient temperature range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"height: 418.563px; width: 101.648%;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 20.2969px;\"\u003e\n\u003cth style=\"width: 25.1373%; text-align: left; height: 20.2969px;\"\u003e\u003cspan\u003eCondition\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.5012%; height: 20.2969px;\"\u003e\u003cspan\u003e\u003cspan data-sheets-root=\"1\"\u003eNew\/Never Used Surplus\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.2969px;\"\u003e\n\u003cth style=\"width: 25.1373%; text-align: left; height: 20.2969px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd class=\"pa-2 pl-4 pr-lg-4 pl-lg-0\" width=\"50%\" data-v-dbe417ec=\"\" style=\"width: 74.5012%; height: 20.2969px;\"\u003e\u003cspan\u003e\u003cspan data-sheets-root=\"1\"\u003eSiemens \u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.2969px;\"\u003e\n\u003cth style=\"width: 25.1373%; text-align: left; height: 20.2969px;\"\u003e\u003cspan\u003eCategory\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.5012%; height: 20.2969px;\"\u003e\n\u003cdiv class=\"mt-1 md:mt-0 column-left basis-2\/4 divide-y divide-rad-gray-10 border-b-[0.0625rem] border-rad-gray-10 md:border-0\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem] md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv class=\"max-w-[8rem] break-words\"\u003e\u003cspan\u003eLevel and Flow Switches\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.2969px;\"\u003e\n\u003cth style=\"width: 25.1373%; text-align: left; height: 20.2969px;\"\u003e\u003cspan\u003ePart Number\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd class=\"text-left text-body1 py-10 desktop:w-[60%]\" style=\"width: 74.5012%; height: 20.2969px;\"\u003e\u003cspan\u003e\u003cspan data-sheets-root=\"1\"\u003e141-0574\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.2969px;\"\u003e\n\u003cth style=\"width: 25.1373%; text-align: left; height: 20.2969px;\"\u003e\u003cspan\u003eSubcategory\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 74.5012%; height: 20.2969px;\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem]  md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"flex gap-[1.75rem]  md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv\u003e\u003cspan\u003eFlow Control Switches\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.2969px;\"\u003e\n\u003ctd style=\"width: 25.1373%; height: 20.2969px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan class=\"15\"\u003e\u003cspan id=\"tabProdAtts_x_ROWx0_x_Col0\"\u003eFunction\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.5012%; height: 20.2969px;\"\u003e\u003cspan\u003eDifferential Static Pressure Detection\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.1373%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan class=\"15\"\u003eSwitch Type\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.5012%; height: 19.5938px;\"\u003e\n\u003cdiv data-type=\"text\" class=\"td algnLeft prio1\"\u003e\u003cspan id=\"tabProdAtts_x_ROWx1_x_Col1\"\u003e\u003cspan\u003eSPDT (Single-Pole Double-Throw)\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.2969px;\"\u003e\n\u003ctd style=\"width: 25.1373%; height: 20.2969px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan class=\"15\"\u003eReset Type\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.5012%; height: 20.2969px;\"\u003e\n\u003cdiv data-type=\"text\" class=\"td algnLeft prio1\"\u003e\n\u003cdiv class=\"spec\"\u003e\n\u003cdiv class=\"specValue\"\u003e\u003cspan\u003eAuto Reset\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.2969px;\"\u003e\n\u003ctd style=\"width: 25.1373%; height: 20.2969px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan class=\"15\"\u003eSetpoint Range\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.5012%; height: 20.2969px;\"\u003e\n\u003cdiv data-type=\"text\" class=\"td algnLeft prio1\"\u003e\u003cspan id=\"tabProdAtts_x_ROWx1_x_Col1\"\u003e\u003cspan\u003e0.05 in. W.C. to 1.0 in. W.C.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.2969px;\"\u003e\n\u003ctd style=\"width: 25.1373%; height: 20.2969px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan class=\"15\"\u003eMaximum Pressure\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.5012%; height: 20.2969px;\"\u003e\n\u003cdiv data-type=\"text\" class=\"td algnLeft prio1\"\u003e\u003cspan id=\"tabProdAtts_x_ROWx1_x_Col1\"\u003e\u003cspan\u003e1\/2 PSI\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.3594px;\"\u003e\n\u003ctd style=\"width: 25.1373%; height: 20.3594px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan class=\"15\"\u003eVoltage Rating\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.5012%; height: 20.3594px;\"\u003e\n\u003cdiv data-type=\"text\" class=\"td algnLeft prio1\"\u003e\u003cspan id=\"tabProdAtts_x_ROWx1_x_Col1\"\u003e\u003cspan\u003e125–277 VAC\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.1373%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan class=\"15\"\u003eCurrent Rating\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.5012%; height: 19.5938px;\"\u003e\n\u003cdiv data-type=\"text\" class=\"td algnLeft prio1\"\u003e\u003cspan id=\"tabProdAtts_x_ROWx1_x_Col1\"\u003e\u003cspan\u003e15 Amps\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.1373%; height: 19.5938px;\"\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan class=\"15\"\u003eWeight\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.5012%; height: 19.5938px;\"\u003e\u003cspan\u003e0.45 kgs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About 141-0574\u003c\/h4\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br 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{mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br 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{mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cp\u003eThe Siemens 141-0574 is a differential static pressure airflow switch designed for HVAC applications. It senses static pressure differences and actuates electrical circuits when the setpoint is reached, providing positive proof of airflow or detecting high differential pressures associated with dirty air filters or similar maintenance alarms.\u003c\/p\u003e\n\u003ch4\u003eKey Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSwitch Type: SPDT (Single-Pole Double-Throw)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReset Type: Auto Reset\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSetpoint Range: Field adjustable from 0.05\" to 1.0\" WC (12.5 Pa to 250 Pa)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSwitching Differential: Approximately 0.06\" to 0.6\" WC (15 Pa to 150 Pa)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAccuracy at 1\" WC: ±0.2\" WC (±50 Pa)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaximum Overpressure: 0.5 psi (3.4 kPa)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eElectrical Ratings: 15 A at 120–277 VAC (non-inductive); 300 VA pilot duty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAmbient Temperature Range: -40°F to 180°F (-40°C to 82°C)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMounting Position: Diaphragm in any vertical plane\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConduit Opening: One 1\/2-inch conduit connection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSample Line Connectors: Two connectors with nuts and ferrules for 1\/4-inch OD tubing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaterial: Aluminized steel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCertifications: UL and CSA listed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis airflow switch is suitable for use in HVAC systems to monitor fan operation, detect clogged filters, or ensure airflow in ducts. Its auto-reset feature makes it ideal for applications where automatic recovery is desired without manual intervention.\u003c\/p\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--\ntd {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}\n--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":49105501651200,"sku":"141-0574","price":160.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/141-0574.jpg?v=1785548258","url":"https:\/\/alotechparts.com\/products\/141-0574-siemens-differential-static-pressure-airflow-switch","provider":"Alo Tech Solutions","version":"1.0","type":"link"}