Variable Frequency Drive (VFD)

Schneider / Telemecanique Altivar 21 Altivar 21 – ATV21WU55N4

Schneider/Telemecanique Altivar 21 VFD, model ATV21WU55N4 (5.5 kW, 380–480 V).

This HVAC-optimized frequency inverter is designed for efficient speed control of 3-phase motors such as fans, pumps, and blowers. The unit features a clear front keypad, Modbus communication, and smooth PWM motor control.

Specifications include:
5.5 kW (7.5 HP)
380–480 V 3~ input / output
12 A max current
50/60 Hz
IP20
Built-in local control panel
Modbus communication ready

Unit is in good operational condition, removed from a functioning ventilation system (label: Putimo vent. SVRPV-7).

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Variable Frequency Drive (VFD)
Schneider / Telemecanique Altivar 21 (ATV21WU55N4)

Manufacturer: Schneider Electric / Telemecanique
Model: Altivar 21 – ATV21WU55N4
Type: HVAC-optimized VFD for 3-phase induction motors

Motor power 5.5 kW / 7.5 HP
Input voltage 380–480 V AC, 3-phase
Output voltage 380–480 V AC, 3-phase
Frequency 50/60 Hz
Output current ≤ 12 A
Control PWM inverter
Protection IP20 enclosure
Interface Built-in keypad (RUN/STOP, MODE, ENT, Up/Down)
Comm protocols Modbus (native) – BACnet capable depending on parameters
Serial number 6W0634001003 (France)
Model revision V1.4 IE04
Mounting Electrical cabinet / wall mount