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Schneider Electric ATV21HU40N4 — AC Drive (VFD) 480V

Schneider Electric ATV21HU40N4 Altivar 21 AC Drive, 4 kW

MPNATV21HU40N4
Obsolete

Schneider Electric Altivar 21 ATV21HU40N4 AC drive, 4 kW, 380-480 V, 3-phase, 6.4 A line current, integrated Class A EMC filter, CE.

$1,527.54Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

ATV21HU40N4 — Identification
ParameterValue
Product typeVariable speed drive
Product range / familyAltivar 21
ATV21HU40N4 — Power & Output
ParameterValue
Motor power (kW)4 kW
Max. transient current10 A 60 s
Apparent power6.9 kVA 380 V
ATV21HU40N4 — Input / Supply
ParameterValue
Input line current6.4 A 480 V 8.1 A 380 V
ATV21HU40N4 — Control & Performance
ParameterValue
Output frequency range0.5...200 Hz
Asynchronous motor control modesCurrent flux vector control (FVC) without speed feedback Energy saving ratio Constant voltage/frequency ratio Quadratic voltage/frequency ratio Constant voltage/frequency ratio with automatic IR compensation
ATV21HU40N4 — Protection & EMC
ParameterValue
Integrated EMC filter classClass A 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
ATV21HU40N4 — Mechanical & Cooling
ParameterValue
IP degree of protectionIP20 on upper part without blanking plate on cover EN/IEC 60529 IP20 on upper part without blanking plate on cover EN/IEC 61800-5-1 IP21 EN/IEC 60529 IP21 EN/IEC 61800-5-1 IP41 on upper part EN/IEC 60529 IP41 on upper part EN/IEC 61800-5-1
Acoustic noise level51 dB 86/188/EEC
Assembly / installation styleWith heat sink
ATV21HU40N4 — Environmental
ParameterValue
Operating ambient temperature14...104 °F (-10...40 °C) (without derating) 104...122 °F (40...50 °C) (with derating factor)
Operating altitude3280.84...9842.52 ft (1000...3000 m) limited to 2000 m for the Corner Grounded distribution network
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
ATV21HU40N4 — Approvals
ParameterValue
Certifications & markingCE
Standards complianceEN 61800-3 environments 2 category C2 EN 61800-5-1 EN 61800-3 environments 2 category C3 IEC 61800-3 environments 1 category C3 EN 61800-3 environments 2 category C1 EN 61800-3 category C2 EN 61800-3 category C3 EN 55011 class A group 1 EN 61800-3 IEC 61800-5-1 IEC 61800-3 environments 1 category C2 EN 61800-3 environments 1 category C1 EN 61800-3 environments 1 category C3 IEC 61800-3 environments 2 category C2 IEC 61800-3 environments 1 category C1 IEC 61800-3 category C2 IEC 61800-3 category C3 UL Type 1 IEC 61800-3 environments 2 category C1 IEC 61800-3 environments 2 category C3 EN 61800-3 environments 1 category C2 IEC 61800-3
ATV21HU40N4 — Communication
ParameterValue
Communication protocolsModbus

Product details

4 kW at 480 V — HVAC duty cycle and supply sizing

The ATV21HU40N4 is a 4 kW Altivar 21 drive for 380-480 V three-phase supplies, drawing 6.4 A line current at 480 V and 8.1 A at 380 V. Apparent power is 6.9 kVA at 380 V, which sets the transformer and upstream breaker sizing for the branch circuit. Input voltage tolerance is -15/+10 % — the drive stays online through brownouts down to 323 V at the 380 V nominal. The integrated Class A EMC filter meets EN 61800-3 category C2 and C3, so for residential or lightly industrial environments you may need an external filter to reach category C1.

Switching frequency and thermal derating

Switching frequency is adjustable from 6 kHz to 16 kHz. Above 12 kHz a derating factor applies — at 16 kHz the continuous output current drops, so match the motor nameplate current at the chosen carrier frequency. The drive is assembled with a heat sink and mounts vertically ±10° for natural convection. Transient overtorque capability is 120 % of nominal motor torque for 60 seconds — enough for fan inertia starts or pump breakaway torque without oversizing the drive.

No direct replacement or successor has been published by Schneider.

Frequently asked questions

What is the ATV21HU40N4's depth for panel mounting?

The depth is 1.9 in (48 mm), which fits standard shallow enclosures. Width is 5.6 in (142 mm) and height 7.2 in (184 mm).

What communication protocols does the ATV21HU40N4 support?

The drive has a 2-wire RS-485 physical interface with RTU Modbus protocol at 9600 or 19200 bps. Optional communication cards add BACnet, LonWorks, METASYS N2, or APOGEE FLN.

What compliance standards does the ATV21HU40N4 meet?

CE marked, meeting EN/IEC 61800-3 (EMC categories C1 through C3), EN/IEC 61800-5-1 (safety), and EN 55011 Class A Group 1. Pollution degree 3 per IEC 61800-5-1.

MPN
ATV21HU40N4