{"product_id":"united-electric-controls-j21k-254-pressure-switch","title":"United Electric Controls J21K-254 Pressure Switch","description":"\u003cdiv class=\"\" data-turn-id-container=\"request-6a43a35d-6f44-83ec-bb05-598fd82bfd75-29\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a43a35d-6f44-83ec-bb05-598fd82bfd75-29\" data-turn-id-container=\"request-6a43a35d-6f44-83ec-bb05-598fd82bfd75-29\" data-testid=\"conversation-turn-472\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"8cae7cd0-7d0e-478d-b942-6b1f33e2887d\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"761\"\u003eThe United Electric Controls J21K-254 Pressure \u003ca href=\"https:\/\/plgautomation.com\/collections\/switches-circuit-protection\"\u003eSwitch\u003c\/a\u003e is used in industrial pressure monitoring and control systems to detect pressure changes and provide automatic switching for equipment protection and process control. Commonly installed in hydraulic systems, pneumatic equipment, air compressors, pumps, lubrication systems, and OEM industrial machinery requiring an adjustable pressure range of 0–90 PSI. Maintenance technicians, process engineers, and \u003ca href=\"https:\/\/plgautomation.com\/collections\/hmi-operator-interfaces\"\u003esystem integrators\u003c\/a\u003e use this pressure switch for preventive maintenance, pressure alarm functions, equipment shutdown, and replacement of OEM pressure control devices. The J21K Series features a compact electromechanical design for reliable operation in demanding industrial environments.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"763\" data-end=\"780\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"781\" data-end=\"1208\"\u003eThe United Electric Controls J21K-254 Pressure Switch is commonly used in compressed air systems, hydraulic power units, industrial pumps, lubrication circuits, water treatment equipment, process skids, packaging machinery, and factory automation systems where dependable pressure monitoring and automatic switching are required. It is suitable for pressure regulation, safety interlocks, alarm activation, and process control.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1210\" data-end=\"1239\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1240\" data-end=\"1765\"\u003e• Brand: United Electric Controls (UE)\u003cbr data-start=\"1278\" data-end=\"1281\"\u003e• Model: J21K-254\u003cbr data-start=\"1298\" data-end=\"1301\"\u003e• Product Type: Pressure Switch\u003cbr data-start=\"1332\" data-end=\"1335\"\u003e• Series: J21K Series\u003cbr data-start=\"1356\" data-end=\"1359\"\u003e• Adjustable Pressure Range: 0–90 PSI\u003cbr data-start=\"1396\" data-end=\"1399\"\u003e• Contact Type: SPDT Snap-Action Switch\u003cbr data-start=\"1438\" data-end=\"1441\"\u003e• Electrical Rating: 15 A at 125\/250 VAC Resistive\u003cbr data-start=\"1491\" data-end=\"1494\"\u003e• Setpoint Adjustment: Field Adjustable\u003cbr data-start=\"1533\" data-end=\"1536\"\u003e• Pressure Connection: 1\/4 in. NPT Female\u003cbr data-start=\"1577\" data-end=\"1580\"\u003e• Enclosure: Heavy-Duty Industrial Housing\u003cbr data-start=\"1622\" data-end=\"1625\"\u003e• Pressure Sensing Element: Diaphragm\u003cbr data-start=\"1662\" data-end=\"1665\"\u003e• Mounting: Direct Process Mount\u003cbr data-start=\"1697\" data-end=\"1700\"\u003e• Application: Industrial Pressure Monitoring and Process Control\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1767\" data-end=\"1791\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1792\" data-end=\"1955\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• United Electric Controls J21 Series Pressure Switch\u003cbr data-start=\"1845\" data-end=\"1848\"\u003e• United Electric Controls J11-252 Pressure Switch\u003cbr data-start=\"1898\" data-end=\"1901\"\u003e• United Electric Controls H100 Series Pressure Switch\u003c\/p\u003e\n\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\/section\u003e\n\u003c\/div\u003e","brand":"UE","offers":[{"title":"New","offer_id":51714352972078,"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_c079fd4c-e9ec-475b-af56-3485f209baaf.jpg?v=1770423816","url":"https:\/\/plgautomation.com\/products\/united-electric-controls-j21k-254-pressure-switch","provider":"PLG Automation ","version":"1.0","type":"link"}