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Schneider Electric ATV21WD37N4C — AC Drive (VFD) 480V

Schneider Electric ATV21WD37N4C AC Drive, 37 kW, 480 V

MPNATV21WD37N4C
Obsolete

Schneider Electric Altivar 21 ATV21WD37N4C AC drive, 37 kW, 380-480 V 3-phase, 54.4 A line current at 480 V, integrated Class B EMC filter, IP20, 343 mm depth.

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

Specifications

ATV21WD37N4C — Identification
ParameterValue
Product typeVariable speed drive
Product range / familyAltivar 21
ATV21WD37N4C — Power & Output
ParameterValue
Motor power (kW)37 kW
Max. transient current86.9 A 60 s
Apparent power52 kVA 380 V
ATV21WD37N4C — Input / Supply
ParameterValue
Input line current54.4 A 480 V 68.9 A 380 V
ATV21WD37N4C — Control & Performance
ParameterValue
Output frequency range0.5...200 Hz
Asynchronous motor control modesCurrent flux vector control (FVC) without speed feedback Constant voltage/frequency ratio with automatic IR compensation Quadratic voltage/frequency ratio Constant voltage/frequency ratio Energy saving ratio
ATV21WD37N4C — 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
ATV21WD37N4C — 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
ATV21WD37N4C — 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
ATV21WD37N4C — Approvals
ParameterValue
Certifications & markingCE
Standards complianceIEC 61800-3 environments 2 category C1 EN 61800-3 environments 1 category C2 IEC 61800-3 environments 2 category C2 IEC 61800-5-1 IEC 61800-3 EN 61800-3 environments 2 category C1 EN 61800-3 environments 1 category C3 IEC 61800-3 environments 2 category C3 EN 61800-3 category C1 EN 61800-3 environments 1 category C1 IEC 61800-3 environments 1 category C1 EN 61800-3 environments 2 category C3 IEC 61800-3 environments 1 category C2 EN 61800-3 environments 2 category C2 EN 61800-3 IEC 61800-3 category C1 EN 55011 group 1 class B EN 61800-5-1 IEC 61800-3 environments 1 category C3
ATV21WD37N4C — Communication
ParameterValue
Communication protocolsModbus

Product details

37 kW, 380-480 V — HVAC-duty VFD with integrated EMC filter

The ATV21WD37N4C is a 37 kW Altivar 21 AC drive designed for asynchronous motors in HVAC, pumping, and fan applications. It accepts a 380-480 V 3-phase supply and delivers 54.4 A line current at 480 V (68.9 A at 380 V). An integrated Class B EMC filter meets EN 55011 Group 1 Class B, which simplifies panel layout by eliminating the need for an external filter in most commercial installations. The drive carries CE marking and complies with IEC 61800-3 across multiple environment categories (C1, C2, C3), so it fits both residential and industrial EMC zones.

Switching frequency, torque, and speed regulation

Switching frequency is adjustable from 6 to 16 kHz; above 8 kHz a derating factor applies, so plan for reduced continuous current if motor noise suppression is the priority. Transient overtorque reaches 120 % of nominal motor torque for 60 seconds, useful for breakaway loads on conveyors or fans. Speed accuracy is ±10 % of nominal slip from 0.2 Tn to Tn, with an adjustable PI regulator loop for closed-loop process control. Torque accuracy is ±15 %, adequate for most HVAC and pumping duty where precise torque holding is not critical.

Dimensions, mounting, and environmental ratings

The drive measures 34.6 in (880 mm) high by 11.2 in (284 mm) wide by 13.5 in (343 mm) deep — a tall, narrow footprint that fits standard 600 mm deep cabinets. Mounting is vertical within ±10°, with a heat sink assembly for convection cooling.

Frequently asked questions

Where can I buy ATV21WD37N4C and how do I get a price?

The ATV21WD37N4C is sourced through independent distribution channels. Submit an RFQ for current pricing and availability — the quote will reflect the BOM quantity and lead time at the time of request.

What compliance documentation does Schneider Electric provide for ATV21WD37N4C?

The drive carries CE marking and complies with IEC 61800-3 (multiple environment categories), IEC 61800-5-1, and EN 55011 Group 1 Class B for EMC. The integrated Class B filter is standard. RoHS and REACH declarations are typically available from Schneider Electric's documentation portal.

What is ATV21WD37N4C's listed depth?

The depth is 13.5 in (343 mm). Combined with a height of 34.6 in (880 mm) and width of 11.2 in (284 mm), it fits standard 600 mm deep enclosures when mounted vertically.

MPN
ATV21WD37N4C