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pCO3 represents the most advanced offering by CAREL in the field of programmable controllers. pCO3 is designed for many air-conditioning and refrigeration applications.

All the boards feature a new quartz, and consequently the calculation power and operation processing speed have been significantly increased.

As for all the pCO series controllers, pCO3 comes in a plastic case that ensures a high index of protection and reduces the risk of electrostatic discharges due to incorrect handling. In addition, assembly is simplified by the DIN rail mounting system, allowing significant saving in wiring and assembly times.

Given the increasing demand for integration, pCO3 can interface with BMS systems via many of the most commonly-used serial communication standards, using optional boards.


The pCO1 series has been designed for the purpose of providing the significant innovations introduced by the pCO2.

The pCO1 controllers are available in two different sizes, according to the I/O and power requirements: pCO1 Small, pCO1 Medium.

Some models feature an SSR to control the devices that require frequent starts and stops.

The pCO1 inputs can be configured using dipswitches, allowing the characteristics of the inputs to be adapted to the more common market standards (NTC, 0 to 1 Vdc, 0 to 5 Vdc, 0 to 20 mA, 4 to 20 mA, ON/OFF)

All the pCO1 series controllers feature a 16-bit microprocessor, and 2 MB flash memory.

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