Designed for variable speed control in HVAC applications, the Schneider Electric Altivar 21 (ATV21) series variable frequency drive (VFD) model ATV21HD37N4 optimizes pump and fan performance. This drive is engineered to deliver robust control and significant energy savings within demanding industrial environments.

Technical Details

• Series: Altivar 21 (ATV21)
• Motor Power Rating: 37 kW (50 HP)
• Input Voltage: 400/460V AC (indicated by '4' in the part number)
• Control Type: Sensorless Vector Control
• Enclosure Type: IP20
• Mounting: Wall-mount or direct panel mount
• Frequency: 50/60 Hz
• Harmonic Distortion: Built-in DC choke for reduced harmonic distortion

Applications & Compatibility

The ATV21HD37N4 is specifically suited for variable torque applications commonly found in building automation and industrial HVAC systems. Its robust design makes it ideal for controlling centrifugal pumps and fans in applications such as air handling units, cooling towers, and exhaust systems.

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 ATV21HD37N4 or contact our technical team for cross-reference assistance with compatible Altivar 21 components.