400 V motor 4 A | fan speed control | day-night regime

This fan speed controller is intended for use with three-phase 400 V motors. A maximum combined current of 4 A can be handled by the controller. The calendar feature allows you to configure two ideal motor speeds, and the timer with a day-week program lets you to transition between these speeds automatically depending on predefined schedules. The controller features a TK monitoring function that monitors motor temperature to guarantee motor safety. If the controller detects overheating, it will shut the motor to prevent harm. In the case of a power outage, the controller has an automatic restart capability, which means that once power is restored, the motor will resume without the need for operator intervention. The AC fan speed is controlled by lowering the motor voltage with autotransformer technology. This method produces a motor voltage with a perfect sinusoidal waveform, resulting in smooth and silent motor running. The controller's enclosure is suitable for surface mounting indoors and has an IP54 rating, providing dust protection and resistance to water splashes. The controller's power supply voltage is 400 VAC. The enclosure of the controller is suitable for surface mounting indoors and has an IP54 rating, providing protection against dust and offering resistance to water splashes. The AC fan speed control is achieved by reducing the motor voltage using autotransformer technology. This technology generates a motor voltage with a perfect sinusoidal waveform, ensuring smooth and quiet motor operation. The supply voltage for the controller is 400 VAC.