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Schneider Electric ATV21WD45N4C — AC Drive (VFD) 480V

Schneider Electric ATV21WD45N4C AC Drive 45 kW, 380-480 V

MPNATV21WD45N4C
Obsolete

Schneider Electric Altivar 21 ATV21WD45N4C AC drive, 45 kW, 380-480 V 3-phase, 65.9 A line current at 480 V, integrated Class B EMC filter, CE marked.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

ATV21WD45N4C — Identification
ParameterValue
Product typeVariable speed drive
Product range / familyAltivar 21
ATV21WD45N4C — Power & Output
ParameterValue
Motor power (kW)45 kW
Max. transient current103.4 A 60 s
Apparent power61.9 kVA 380 V
ATV21WD45N4C — Input / Supply
ParameterValue
Input line current65.9 A 480 V 83.8 A 380 V
ATV21WD45N4C — Control & Performance
ParameterValue
Output frequency range0.5...200 Hz
Asynchronous motor control modesConstant voltage/frequency ratio Quadratic voltage/frequency ratio Current flux vector control (FVC) without speed feedback Constant voltage/frequency ratio with automatic IR compensation Energy saving ratio
ATV21WD45N4C — Protection & EMC
ParameterValue
Integrated EMC filter classClass B EMC filter integrated
EMC immunity tests1.2/50 µs - 8/20 µs surge immunity test level 3 conforming to IEC 61000-4-5 Conducted radio-frequency immunity test level 3 conforming to IEC 61000-4-6 Electrical fast transient/burst immunity test level 4 conforming to IEC 61000-4-4 Electrostatic discharge immunity test level 3 conforming to IEC 61000-4-2 Radiated radio-frequency electromagnetic field immunity test level 3 conforming to IEC 61000-4-3 Voltage dips and interruptions immunity test conforming to IEC 61000-4-11
ATV21WD45N4C — Mechanical & Cooling
ParameterValue
IP degree of protectionIP54 EN 60530 IP54 EN 61800-5-2 IP54 IEC 60529 IP54 IEC 61800-5-1
Acoustic noise level64 dB 86/188/EEC
Assembly / installation styleWith heat sink
ATV21WD45N4C — Environmental
ParameterValue
Operating ambient temperature14...104 °F (-10...40 °C) (without derating) 104...122 °F (40...50 °C) (with derating factor)
Relative humidity5...95 % without condensation IEC 60068-2-3 5...95 % without dripping water IEC 60068-2-3
Storage / transport temperature-13...158 °F (-25...70 °C)
Pollution degree3 IEC 61800-5-1
Vibration resistance1 gn (f= 13...200 Hz) conforming to EN/IEC 60068-2-8 1.5 mm (f= 3...13 Hz) conforming to EN/IEC 60068-2-6
ATV21WD45N4C — Approvals
ParameterValue
Certifications & markingCE
Standards complianceIEC 61800-3 EN 61800-5-1 IEC 61800-3 environments 1 category C1 EN 55011 group 1 class B EN 61800-3 environments 1 category C1 EN 61800-3 category C1 IEC 61800-5-1 IEC 61800-3 environments 2 category C3 EN 61800-3 IEC 61800-3 environments 1 category C2 IEC 61800-3 environments 2 category C1 EN 61800-3 environments 2 category C3 EN 61800-3 environments 2 category C2 IEC 61800-3 environments 2 category C2 EN 61800-3 environments 1 category C2 EN 61800-3 environments 2 category C1 IEC 61800-3 category C1 EN 61800-3 environments 1 category C3 IEC 61800-3 environments 1 category C3
ATV21WD45N4C — Communication
ParameterValue
Communication protocolsModbus

Product details

45 kW VFD for pump and fan duty

The ATV21WD45N4C is a 45 kW Altivar 21 AC drive from Schneider Electric, designed for variable-torque loads like centrifugal pumps and fans.

Switching frequency and derating

The drive's adjustable switching frequency runs from 6 to 16 kHz, with a derating factor applied above 8 kHz. Running at 16 kHz quiets the motor whine for noise-sensitive installations, but the output current must be reduced to stay within the thermal limits of the power stage. For most pump and fan applications, the default 4 kHz carrier (implied by the 6-16 kHz adjustable range) is sufficient and avoids derating.

EMC and standards compliance

An integrated Class B EMC filter is built in, which simplifies panel design for residential and light commercial environments where conducted emissions limits are tighter. The drive carries CE marking and complies with IEC 61800-3 for EMC environments 1 category C1 (residential) through category C3 (industrial), plus IEC 61800-5-1 for safety. Pollution degree 3 per IEC 61800-5-1 means it's rated for industrial atmospheres with conductive contamination — typical for pump rooms and HVAC plant areas.

Building management integration

The drive supports optional communication cards for APOGEE FLN, BACnet, LonWorks, and METASYS N2, making it a natural fit for building automation systems where the VFD reports status and accepts speed setpoints over the fieldbus. The standard RS-485 port with Modbus RTU at 9600 or 19200 bps handles basic SCADA connectivity without an option card.

Frequently asked questions

What is ATV21WD45N4C's listed depth?

The depth is 13.5 inches (343 mm). This is a large-frame drive — the height is 34.6 inches (880 mm) and width is 11.2 inches (284 mm) — so cabinet layout needs to account for the vertical clearance and the heat sink ventilation path.

What compliance documentation does Schneider Electric provide for ATV21WD45N4C?

The drive is CE marked and complies with IEC 61800-3 (EMC environments 1 category C1 through category C3) and IEC 61800-5-1 (safety). An integrated Class B EMC filter is included. Pollution degree 3 per IEC 61800-5-1 is specified for industrial atmospheres.

MPN
ATV21WD45N4C