{"product_id":"cleveland-controls-dns2-1130-00b","title":"Cleveland Controls DNS2-1130-00B Pressure Switch","description":"\u003cp\u003eThe \u003cstrong\u003eCleveland Controls DNS2-1130-00B Low Side Pressure Switch\u003c\/strong\u003e is a \u003cstrong\u003efactory-calibrated DNS2 Series air pressure switch\u003c\/strong\u003e that senses \u003cstrong\u003epositive, negative, or differential air pressure\u003c\/strong\u003e and opens or closes its contacts at a fixed \u003cstrong\u003eset point\u003c\/strong\u003e. The \u003cstrong\u003e-00B\u003c\/strong\u003e suffix identifies it as the \u003cstrong\u003elow side switch\u003c\/strong\u003e in the \u003cstrong\u003eDNS2-1130\u003c\/strong\u003e family. Its sibling \u003cstrong\u003eDNS2-1130-00A\u003c\/strong\u003e is a different part, listed as a cross-reference to the \u003cstrong\u003eDaikin-McQuay 300051594\u003c\/strong\u003e dual-stage air pressure switch, so the two suffixes are not interchangeable. Searches for the base number \u003cstrong\u003eDNS2-1130-00\u003c\/strong\u003e land on one of these two suffixed parts, and the letter on the original switch label tells you which one you need.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eDNS2\u003c\/strong\u003e is essentially two separate \u003cstrong\u003eNS2\u003c\/strong\u003e switches joined together in one assembly, so a single device can prove two different pressure conditions. Each side uses a \u003cstrong\u003edual-diaphragm sensing element\u003c\/strong\u003e with an \u003cstrong\u003eintegral snap-acting switch\u003c\/strong\u003e inside a \u003cstrong\u003eglass-filled polycarbonate housing\u003c\/strong\u003e, which gives a narrow switching differential and a stable trip point. \u003cstrong\u003eSet points\u003c\/strong\u003e are factory-calibrated and sealed anywhere from \u003cstrong\u003e0.05 to 10.0 in. wc\u003c\/strong\u003e, with a tolerance of \u003cstrong\u003e±0.05 in. wc\u003c\/strong\u003e, and the series is built in \u003cstrong\u003eSPNO, SPNC and SPDT\u003c\/strong\u003e contact arrangements. The pressure ports are color-coded, with \u003cstrong\u003eP1 (positive) black\u003c\/strong\u003e and \u003cstrong\u003eP2 (negative) gray\u003c\/strong\u003e, and the electrical connections are \u003cstrong\u003e90° male quick-connect spade terminals\u003c\/strong\u003e. The series is rated for \u003cstrong\u003e-40°F to 190°F\u003c\/strong\u003e operation, a \u003cstrong\u003e14 in. wc\u003c\/strong\u003e maximum pressure, and carries \u003cstrong\u003eUL, cUL, CSA and CE\u003c\/strong\u003e approvals. This unit's own trip point is set at the factory, so always replace it with the exact \u003cstrong\u003eDNS2-1130-00B\u003c\/strong\u003e number printed on the original.\u003c\/p\u003e\n\n\u003cp\u003eIn service, a pressure switch like this one \u003cstrong\u003eproves airflow or draft\u003c\/strong\u003e before the control is allowed to continue its sequence. On two-stage equipment the \u003cstrong\u003ehigh side\u003c\/strong\u003e and \u003cstrong\u003elow side\u003c\/strong\u003e switches each prove their own stage, so each must be replaced with its own exact number. Typical symptoms of a bad switch are a \u003cstrong\u003elockout or short-cycle\u003c\/strong\u003e because the contacts will not make, or \u003cstrong\u003elost safety proving\u003c\/strong\u003e because they stuck closed. Before condemning it, check the \u003cstrong\u003esample tubing\u003c\/strong\u003e for cracks, kinks and condensate, clear any blocked \u003cstrong\u003epressure tap\u003c\/strong\u003e, and confirm the \u003cstrong\u003einducer or fan\u003c\/strong\u003e is producing the pressure it should, using a \u003cstrong\u003emanometer\u003c\/strong\u003e. Never jumper a pressure switch to get a unit running. Move the tubing and wires over one at a time so the \u003cstrong\u003eP1\u003c\/strong\u003e and \u003cstrong\u003eP2\u003c\/strong\u003e connections do not get crossed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLow Side Switch:\u003c\/strong\u003e The \u003cstrong\u003eDNS2-1130-00B\u003c\/strong\u003e is the \u003cstrong\u003elow side\u003c\/strong\u003e switch of its family, so you get the exact \u003cstrong\u003eletter suffix\u003c\/strong\u003e instead of guessing between \u003cstrong\u003e-00A\u003c\/strong\u003e and \u003cstrong\u003e-00B\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFactory-Calibrated Set Point:\u003c\/strong\u003e Each \u003cstrong\u003eDNS2\u003c\/strong\u003e is set and sealed at the factory within \u003cstrong\u003e0.05 to 10.0 in. wc\u003c\/strong\u003e, so there is nothing to adjust in the field.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSnap-Acting, Dual-Diaphragm Design:\u003c\/strong\u003e Crisp switching with a \u003cstrong\u003enarrow differential\u003c\/strong\u003e helps prevent \u003cstrong\u003echatter\u003c\/strong\u003e and nuisance lockouts near the trip point.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEasy Swap:\u003c\/strong\u003e \u003cstrong\u003eColor-coded P1\/P2 ports\u003c\/strong\u003e and \u003cstrong\u003equick-connect spade terminals\u003c\/strong\u003e make it a straightforward change when you transfer the tubing and wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhat is the difference between DNS2-1130-00A and DNS2-1130-00B?\u003c\/strong\u003e They are separate parts. \u003cstrong\u003eDNS2-1130-00B\u003c\/strong\u003e is the \u003cstrong\u003elow side switch\u003c\/strong\u003e, while \u003cstrong\u003eDNS2-1130-00A\u003c\/strong\u003e is cross-referenced to \u003cstrong\u003eDaikin-McQuay 300051594\u003c\/strong\u003e. Order the one that matches the \u003cstrong\u003eletter suffix\u003c\/strong\u003e on your original.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhich set point does it use?\u003c\/strong\u003e Every \u003cstrong\u003eDNS2\u003c\/strong\u003e is calibrated to a specific \u003cstrong\u003eset point\u003c\/strong\u003e within the series range of \u003cstrong\u003e0.05 to 10.0 in. wc\u003c\/strong\u003e, so replace it with the exact \u003cstrong\u003eDNS2 part number\u003c\/strong\u003e from the original switch label.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhere does it connect?\u003c\/strong\u003e The \u003cstrong\u003eP1 (black) positive port\u003c\/strong\u003e and \u003cstrong\u003eP2 (gray) negative port\u003c\/strong\u003e take the \u003cstrong\u003esample tubing\u003c\/strong\u003e, and the contacts land on \u003cstrong\u003equick-connect terminals\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Cleveland Controls","offers":[{"title":"Default Title","offer_id":67643390525618,"sku":"DNS2-1130-00B","price":34.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/DNS2-1130-00B.jpg?v=1791313878","url":"https:\/\/www.gsistore.com\/products\/cleveland-controls-dns2-1130-00b","provider":"GSIstore","version":"1.0","type":"link"}