{"product_id":"barksdale-d1h-m3-industrial-pressure-vacuum-switch","title":"Barksdale D1H-M3 Industrial Pressure Vacuum Switch","description":"\u003cdiv\u003e\u003cp\u003eThe Barksdale D1H-M3 is a single-setpoint, diaphragm-style pressure or vacuum switch housed in a rugged NEMA 4 enclosure for industrial control systems. It supports positive-pressure service up to 150 psi, and in its vacuum variants (the D1H family) covers vacuum ranges from 0.06 to 30 inches of mercury, enabling reliable monitoring across a wide range of applications. The unit is designed for external adjustment with tamper-resistant access and uses a standard 1\/4\" NPT female pressure connection, with optional pressure-connection configurations available as 3SS, 80SS, or 150SS to suit different piping layouts. Electrical ratings for common configurations are up to 10 A at 125\/250 VAC (3 A at 480 VAC), with alternative options defined for other voltage classes. As a housed, single-setpoint switch, the D1H-M3 is well suited for straightforward integration into process control, pneumatic and hydraulic systems, compressors, and pumps, delivering a discrete electrical signal when the sensed pressure or vacuum crosses the preset point. This combination of durable enclosure, adjustable setpoint, and versatile connection options makes it a reliable choice for industrial monitoring and interlock or alarm applications across manufacturing and utility infrastructures.\u003c\/p\u003e\u003c\/div\u003e","brand":"BARKSDALE","offers":[{"title":"New","offer_id":51676678717742,"sku":null,"price":44.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_de26cb7b-4f08-44d0-af22-bfa7d9e76e36.jpg?v=1769552323","url":"https:\/\/plgautomation.com\/products\/barksdale-d1h-m3-industrial-pressure-vacuum-switch","provider":"PLG Automation ","version":"1.0","type":"link"}