- 5-Step Fan Speed Control – Integrated step switch allows precise fan speed adjustment with frequencies of 0, 10, 20, 30, 40, and 50 Hz for controlled airflow management in ventilation systems.
- Wide Voltage Compatibility – Designed for 3-phase 208-480V power systems, supporting stable operation in industrial and commercial fan installations.
- Motor Protection Integration – Supports connection of thermostats (TB) or thermistors (TP) to help safeguard the motor from overheating and operational stress.
- Durable Industrial Design – Built with a protective IP54 rated enclosure to help resist dust and moisture, making it suitable for demanding environments.
- Smart Operational Features – Includes LED indication, potential-free operation notification, and enable contact section for convenient monitoring and control.
The FRQ5-4A+LED V2 5-Step Speed Controller is a reliable analogue controller designed for precise speed regulation of 3-phase fan motors. Built for efficiency and durability, this controller allows users to adjust motor performance through an integrated 5-step frequency switch, delivering controlled operation from 0 Hz up to 50 Hz. Engineered for compatibility with motors that feature suitable insulation systems and bearings such as IE2 motors, it also supports thermostat or thermistor motor protection for enhanced safety. With a durable IP54 enclosure and dependable electrical performance across a 208–480V voltage range, this controller ensures stable fan operation in commercial and industrial ventilation systems. The integrated LED indicator and potential-free operation notification provide clear operational feedback, making installation and monitoring simple while maintaining dependable long-term performance.
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