Pressure alarm switches

  • Accurate Pressure Sensing
  • User Defined Fixed Setting
  • Broad Choice of Mounting Threads Available
  • IP65 Ingress Protection as Standard
  • Withstands Acceleration to 8G
  • Rugged Construction for Tough Applications
  • Temperature switch version available


DCA/B Pressure switches are ideally suited for use on all types of engines, pumps, compressors, gearboxes, industrial power plant and other applications where a rugged reliable control is required.

Physical Description

The DCA/B consists of a single compact non-adjustable unit based on a 32 A/F hex zinc plated and passivated steel body. This enables the control to be fitted directly into the application.

The DCA/B senses pressure through a small orifice at the base of the thread. This incorporates a restrictor to prevent long-term damage through pulsing.

Electrical connections are configured by attaching standard 6.35 mm Faston terminals. Upon installation, normally open/closed or change over may be selected. Special variants with an internal earth (earth return) and an improved IP68 rating can be specified upon order. A rubber Gator is also available as an optional extra.


Should a hazardous condition arise, the DCA/B can be arranged to operate an alarm, initiate a shutdown at a pre-determined operating pressure, preventing damage to your valuable plant machinery.

Installation Considerations

Check there is enough clearance around the flats of the body (see outline details) and ensure the maximum pressure is not exceeded for a long service life. The DCA/B automatically resets once the application pressure has decreased. The DCA/B has a differential of 0.5bar.

For further information about the DCA/B, please contact us today.