Allen-Bradley 836-A2JX2 Pressure Control Relay

The Allen-Bradley 836-A2JX2 Pressure Control Relay is a rugged, mechanical pressure switch that actuates electrical contacts when process pressure meets the setpoint. As part of the 836 Pressure Controls family (Device Style A) it uses a copper alloy bellows and is configured with no enclosure, with the X2 suffix indicating compatibility with oxygen/nitrous oxide service. Sensing is done through a 7/16-20 SAE flare connection for 1/4" tubing, and Rockwell notes that standard trip/reset settings are factory-set for the maximum operating range and minimum differential, with customization available to tailor the range to your application. Typical applications include industrial gas handling, vacuum or process control in general industrial systems, and it supports AC control circuits up to 125 VA over 24–600 V depending on variant.