Controller A3RW 7.0/1/S/IP 21 17886-9988

Three-phase fan speed controller A3RW 7.0/1/S/IP 21

This speed controller, catalog number 17886-9988, is an autotransformer device designed for five-stage speed control of three-phase motors in ventilation and heating systems. It is a solid solution for professional installations, as well as for users looking for precise control over fan operation.

Characteristics and application

A3RW is a controller designed with reliability and versatility in mind. It enables smooth fan speed control, which translates to optimized energy consumption and performance adjustment to current needs. Thanks to five levels of regulation, the rotational speed can be easily adapted to specific working conditions. Application in ventilation systems allows for effective air flow management, and in heating systems – for precise control of heat distribution.

The design of this controller takes into account the requirements of professional installations – a high level of protection (including a fuse, anti-freeze and thermal protection) and resistance to harsh working conditions (IP21 protection class). Additionally, the illumination in the ON position makes operation easier in low light conditions.

Advantages and product features

• Versatile application: Suitable for working with motors with different parameters (maximum output current depending on the model).
• High level of protection: Provides protection against overload, short circuit and freezing, which increases safety and device durability.
• Durable construction: IP21 protection class protects against the ingress of solid objects larger than 12.5 mm and against condensation – ideal for use in industrial environments or humid rooms.
• Ergonomic operation: Intuitive speed control with a knob.
• Three-phase system: Designed to work with three-phase motors, commonly used in ventilation systems with higher power.
• Five levels of regulation: Allows precise adjustment of the rotational speed to current needs.
• Illumination: Indicator illuminated in the ON position, improving readability and comfort of use.
• Dimensions: Width 315 mm, height 185 mm, depth 300 mm – compact dimensions make it easy to install even in limited spaces.