Controller A3RW 5.0/1/S/IP 21 17886-9978

Fan Speed Controller A3RW 5.0/1/S/IP 21 – Reliable Performance Control

This three-phase fan speed controller, catalog number 17886-9978, is a robust solution for professional ventilation and heating installations. The autotransformer design allows for five-stage speed control of fan motors, providing precise control over airflow. The device is particularly useful where optimizing system performance based on current needs is required – from full power to energy-saving mode.

Construction and Application

The A3RW 5.0/1/S/IP 21 controller is designed to work with three-phase fan motors. Its dimensions (315 mm width, 185 mm height, and 300 mm depth) allow for easy installation in various configurations. The speed control knob provides intuitive operation. Additionally, the built-in illumination in the ON position makes it easier to identify the device status even in low light conditions. The IP21 protection class protects against accidental contact and the ingress of solid objects larger than 12.5 mm.

Key Features and Benefits

• Five-stage regulation: Precise adjustment of the fan speed to current needs, which translates into energy savings and user comfort.
• Three-phase power supply: Designed to work with typical three-phase fan motors used in HVAC systems.
• Durable construction: Solid construction and IP21 protection class ensure reliable operation even in harsh industrial conditions.
• Illumination: Convenient identification of the device status (ON) even in the dark.
• Changeover contact: Allows integration with control and building automation systems.
• Wide range of applications: Ideal for regulating the speed of fans in ventilation, heating and process systems.

The A3RW controller is not just a control element – it is an investment in energy efficiency and the reliability of the ventilation system. It allows for optimization of device operation, reduction of operating costs and ensuring comfort for building or industrial hall users.