Designed for HVAC applications, the Schneider Electric Square D ATV-21WU55N4 is a variable speed drive from the Altivar 21 series. This unit delivers 5.5 kW (7.5 HP) of power and operates on a 380-480VAC three-phase power supply. Its robust construction provides a high degree of environmental protection, making it suitable for demanding operational settings.

Technical details

• Series: Altivar 21 (ATV-21)
• Power Rating: 5.5 kW / 7.5 HP
• Input Voltage: 380-480 VAC, 3-Phase
• Enclosure Rating: IP54
• Control Method: Scalar Control (V/f)
• Overload Capacity: 150% for 60 seconds
• Operating Temperature Range: -10°C to 50°C (14°F to 122°F)
• Mounting Type: Wall-mount

Applications & compatibility

The ATV-21WU55N4 is specifically engineered for building automation and HVAC systems, including fan and pump control. Its IP54 rating ensures reliable operation in environments where dust and water spray are present, common in mechanical rooms and industrial facilities. This drive is compatible with standard three-phase motors used in ventilation and fluid handling equipment.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider Electric Square D ATV-21WU55N4 or contact our technical team for cross-reference assistance with compatible Altivar components.