{"product_id":"united-electric-controls-8542-type-j21kd-pressure-switch-0-25psi-20a-125-250va","title":"United Electric Controls 8542 Type J21KD Pressure Switch 0-25PSI 20A 125 250Va","description":"\u003ch3\u003eDescription:\u003c\/h3\u003e\n\u003cp\u003eThe United Electric Controls 8542 Type J21KD Pressure \u003ca href=\"https:\/\/plgautomation.com\/collections\/switches-circuit-protection\"\u003eSwitch\u003c\/a\u003e is used in industrial process control, pneumatic systems, compressors, pumps, and equipment protection applications to monitor pressure and provide automatic electrical switching when preset pressure conditions are reached. Commonly installed in air compressors, filtration systems, process equipment, utility systems, and industrial machinery requiring reliable low-pressure monitoring and control. Maintenance technicians 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 monitoring systems.\u003c\/p\u003e\n\u003ch3\u003eApplications:\u003c\/h3\u003e\n\u003cp\u003eThe United Electric Controls 8542 Type J21KD Pressure Switch is commonly used in compressor control circuits, pump protection systems, air handling equipment, pneumatic control panels, industrial automation systems, and process monitoring applications. The switch converts pressure changes into electrical switching actions for alarms, equipment shutdown, startup control, and pressure regulation, helping maintain safe and efficient operation of critical equipment.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp\u003e• Brand: United Electric Controls\u003cbr\u003e• Part Number: 8542\u003cbr\u003e• Type: J21KD\u003cbr\u003e• Product Type: Pressure Switch\u003cbr\u003e• Switch Type: Electromechanical Pressure Switch\u003cbr\u003e• Adjustable Pressure Range: 0 to 25 PSI\u003cbr\u003e• Function: Pressure Monitoring and Control\u003cbr\u003e• Electrical Rating: 20A @ 125\/250 VAC\u003cbr\u003e• Output Type: SPDT Electrical Switch Contacts\u003cbr\u003e• Pressure Connection: 1\/4 in. NPT\u003cbr\u003e• Setpoint Adjustment: Adjustable Internal Mechanism\u003cbr\u003e• Suitable for Pneumatic and Low-Pressure Systems\u003cbr\u003e• Compatible with Pumps and Compressors\u003cbr\u003e• Designed for Alarm and Shutdown Applications\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 Series Pressure Switch\u003cbr\u003e• United Electric Controls J6 Series Pressure Switch\u003cbr\u003e• United Electric Controls 100 Series Pressure Switch\u003c\/p\u003e","brand":"United","offers":[{"title":"New","offer_id":51728601383214,"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_b9484a64-7dc9-4ede-92df-63415f388dfb.jpg?v=1770587006","url":"https:\/\/plgautomation.com\/products\/united-electric-controls-8542-type-j21kd-pressure-switch-0-25psi-20a-125-250va","provider":"PLG Automation ","version":"1.0","type":"link"}