Overview
The Versa Exhaust Fan Controller is a compact ECM / BLDC drive designed for bathroom and kitchen exhaust fans in residential and light commercial buildings. It runs from a 180–265 Vac, 50 Hz mains supply and delivers up to 30 W of motor power with >75% efficiency at rated conditions.
This controller enables smooth, stable low-speed operation, soft start and reduced noise compared to direct-on-line AC motors. It is optimised for humid environments with built-in protections and is suitable for ceiling-mounted, wall-mounted or inline duct exhaust fans.
Key Features
Wide input voltage range
- 180 to 265 Vac, 49–51 Hz input suitable for typical residential mains variations
Optimised for small exhaust fans
- 30 W motor input power
- 230 Vac motor, 400 Hz rated motor frequency
Improved comfort & noise
- Stable low-speed operation for quieter bathroom and kitchen ventilation
- Soft start reduces mechanical stress and acoustic noise
Good electrical performance
- Drive input power: 40 W at rated operation
- Power factor: >0.5 at 230 Vac, rated power
- Efficiency: >75% at 230 Vac, rated power
Protection and reliability
- Integrated protections: under-voltage, over-voltage, over-current, overload
- Designed with surge capability up to 2 kV
- Not intended for use where short-circuit / earth-fault protection in the drive is mandatory (must be provided at system level)
Simple user interface
- Analog potentiometer input for speed control
- Fault indication via LED, for basic diagnostics
Environmental & standards
- Operating temperature: -15 to 50 °C
- Max humidity: 95% (non-condensing)
- Designed with reference to IEC 61800-3 and IEC 61800-5 for adjustable speed electrical power drive systems
Typical Applications
- Residential bathroom exhaust fans
- Kitchen hood / kitchen exhaust fans
- Small, ceiling-mounted or wall-mounted axial exhaust fans
- Inline duct exhaust fans for toilets and small utility rooms
- Light commercial ventilation where quiet, controlled low-speed operation is important
Technical Specifications
| Parameter | Specification | Unit |
|---|---|---|
| Drive input voltage | 180 (min) / 230 (typ) / 265 (max) | Vac |
| Drive input frequency | 49 / 50 / 51 | Hz |
| Drive input power | 40 (typical at rated load) | W |
| Power factor @ 230 Vac, rated power | >0.5 | – |
| Surge capability | 2 | kV |
| Motor type | Single-phase ECM / BLDC exhaust fan | – |
| Motor input voltage | 230 | Vac |
| Motor input power | 30 | W |
| Motor input current | 450 | mA |
| Motor rated frequency | 400 | Hz |
| Drive efficiency @ 230 Vac, rated power | >75 | % |
| Protections | Under-voltage, over-voltage, over-current, overload (short-circuit & earth-fault not included) | – |
| Operating temperature | -15 to 50 | °C |
| Humidity (max.) | 95 (non-condensing) | % |
| Standards (reference) | IEC 61800-3, IEC 61800-5 | – |
Enquiry Note
If you are interested, please share a few lines about your product, motor rating and supply voltage. We will review your requirement, map it to the closest Versa motor–drive platform and get back to you with next steps.
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