Astra Automation > Products > Refrigeration components > Condenser fan speed regulators > A3 PENN® Condenser Fan 255-Phase Speed ​​Controller
A3 PENN® Condenser Fan 255-Phase Speed ​​Controller

A255 controllers are used in fans where the speed must be controlled by a signal from a temperature sensor. The total current drawn by the fan motors with the A255 should not ...

A255 controllers are used in fans where the speed must be controlled by a signal from a temperature sensor. The total current drawn by the fan motors with the A255 should not exceed 5A per phase.


Product selection table
Model Power supply voltage
A255ML-9100 230V-3phase
A255MM-9100 400V-3phase
A3 PENN® Condenser Fan 255-Phase Speed ​​Controller
  • Built-in switch for direct / reverse operation
  • A wide range of sensors in various housings
  • Models for "star" or "delta" connections
  • Protection class IP54
  • Possibility to choose minimum speed or power cut off
  • Built-in setpoint adjustment
  • Adjustable hysteresis in cut-off mode
  • Adjustable upper limit
  • Motor cosφ regulation

The regulator changes the supply voltage to the motor in the range from 30% to 95% of the supply voltage using a thyristor system.