Allen-Bradley 836-NXDEMATIC1 Series A Pressure Control Switch

The Allen-Bradley 836-NXDEMATIC1 Series A is a robust electromechanical pressure control switch designed for industrial applications requiring precise pressure monitoring and control. This device operates within a pressure range of 40-150 PSI with an adjustable differential of 25-75 PSI, making it ideal for use in hydraulic systems, pneumatic equipment, compressors, and process control environments. It features a Type 1 enclosure for general-purpose indoor use, ensuring protection against contact with internal components. Key benefits include high reliability, long service life due to its bellows-actuated mechanism, and easy adjustability for set points, which reduces downtime during setup. Compared to similar products like those from Square D or Honeywell, the 836 series offers superior durability in harsh industrial settings and compatibility with Allen-Bradley control systems for seamless integration. Drawbacks may include the need for periodic calibration and lack of advanced digital features found in modern electronic switches. The switch is suitable for applications such as pump control, safety interlocks, and alarm systems. Based on attached images, this unit appears new in original packaging, with no visible wear, and includes factory settings (circuit opens at 60 PSI, closes at 72 PSI). For detailed resources, refer to the Rockwell Automation Bulletin 836 datasheet (available at https://literature.rockwellautomation.com/idc/groups/literature/documents/td/836-td001_-en-p.pdf) and installation manual (https://literature.rockwellautomation.com/idc/groups/literature/documents/in/836-in001_-en-p.pdf).