{"product_id":"united-electric-controls-j21kx-140-differential-pressure-switch-nsnbc7","title":"UNITED ELECTRIC CONTROLS J21KX-140 DIFFERENTIAL PRESSURE SWITCH NSNBC7","description":"\u003ch3\u003eDescription:\u003c\/h3\u003e\n\u003cp\u003eThe United Electric Controls J21K-S150B Differential Pressure \u003ca href=\"https:\/\/plgautomation.com\/collections\/switches-circuit-protection\"\u003eSwitch\u003c\/a\u003e is used in industrial process control, filtration systems, HVAC equipment, and fluid handling applications to monitor differential pressure and provide automatic electrical switching when preset pressure differential conditions are reached. Commonly installed in filter banks, air handling units, clean rooms, process piping systems, and industrial \u003ca href=\"https:\/\/plgautomation.com\/collections\/plcs-more\"\u003eautomation equipment\u003c\/a\u003e requiring reliable differential pressure monitoring. Maintenance teams and \u003ca href=\"https:\/\/plgautomation.com\/collections\/hmi-operator-interfaces\"\u003esystem integrators\u003c\/a\u003e use this part for repair, retrofit, expansion, or replacement of existing pressure sensing and control systems.\u003c\/p\u003e\n\u003ch3\u003eApplications:\u003c\/h3\u003e\n\u003cp\u003eThe United Electric Controls J21KX-140 Differential Pressure Switch is commonly used in filter monitoring systems, air flow verification, pump protection circuits, ventilation equipment, process control installations, and industrial safety systems. The switch converts differential pressure changes into electrical switching actions for alarms, shutdown functions, maintenance indication, and automatic process control, helping maintain safe and efficient operation of critical industrial equipment.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp\u003e• Brand: United Electric Controls\u003cbr\u003e• Part Number: J21KX-140\u003cbr\u003e• Product Type: Differential Pressure Switch\u003cbr\u003e• Series: J21KX Series\u003cbr\u003e• Switch Type: Differential Pressure Switch\u003cbr\u003e• Function: Differential Pressure Monitoring and Control\u003cbr\u003e• Pressure Sensing Element: Dual Diaphragm\/Bellows Assembly\u003cbr\u003e• Output Contacts: SPDT Snap-Action Switch\u003cbr\u003e• Electrical Rating: 15A @ 125\/250\/480 VAC Resistive\u003cbr\u003e• Setpoint Adjustment: Internal Adjustable Differential Setpoint\u003cbr\u003e• Repeatability: Industrial Process Control Accuracy\u003cbr\u003e• Enclosure Type: NEMA 4X Weatherproof Housing\u003cbr\u003e• Housing Material: Epoxy-Coated Die-Cast Aluminum\u003cbr\u003e• Pressure Connections: Dual Pressure Ports (High and Low Side)\u003cbr\u003e• Suitable for Air, Water, Oil, and Compatible Non-Corrosive Fluids\u003cbr\u003e• Designed for Alarm and Shutdown Applications\u003cbr\u003e• Compatible with Filtration, HVAC, and Process Equipment\u003cbr\u003e• Intended for OEM Equipment and Replacement Installations\u003cbr\u003e• Suitable for Maintenance, Retrofit, and Repair Projects\u003cbr\u003e• Engineered for Continuous-Duty Industrial Service\u003c\/p\u003e\n\u003ch3\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp\u003e• United Electric Controls J21K-S150B Pressure Switch\u003cbr\u003e• United Electric Controls J120-616 Pressure Switch\u003cbr\u003e• United Electric Controls H122 Series Pressure Switch\u003c\/p\u003e","brand":"UNITED","offers":[{"title":"New","offer_id":51728584245550,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_8fcc1089-4109-482f-96ae-2d2b12ea9f16.jpg?v=1770586945","url":"https:\/\/plgautomation.com\/products\/united-electric-controls-j21kx-140-differential-pressure-switch-nsnbc7","provider":"PLG Automation ","version":"1.0","type":"link"}