Crouzet control relay family


ontrol relays are widely-used components in industrial processes and still offer a solution for many applications next to the programmable logic controllers (PLCs).


A control relay is an electronic device used to detect and monitor physical values or electrical values. Thus, if a device is operating abnormally, the control relay trips to halt its operation.  

Which actions can a control relay execute?

  • Protecting & monitoring

The control relay is used to protect machines by monitoring values such as current, voltage, phase presence and sequence, levels, etc. It ensures total availability of equipment, a major challenge for industries keen to improve their productivity and operating profits. It is one of the indispensable monitoring components for ensuring continuity of service of each installation.

  • Sensing & alerting

If the relay detects a fault, the machine is not allowed to run and a visual signal informs the user of the anomaly. Thus alerted, the user can then correct any malfunctions. This avoids expensive breakdowns, synonymous with production delays and loss of profitability

  • Controlling & triggering

In level control, the control relay takes on a different role: it controls the pump in order to manage the level of water in a container (tank, swimming pool, sink, etc). Directly interfacing with probes, it triggers a signal and thus safeguards against machine breakdowns due to threshold adjustment.

What are the main features of a control relay?

  • Positive logic output to protect installations in the event of a power failure.
  • True RMS guaranteed regardless of interference on the electrical supply.
  • Better integration in industrial and commercial cabinets thanks to modular casings and industrial casings.
  • Simplified installation thanks to a power supply for single-phase products and a self-powered version for three-phase products.
  • The combination of a number of control functions in one unit optimizes wiring time and simplifies installation.
  • A range of power supplies from 24 to 240 V in one unit for optimized stocks.

Leave a Reply