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Schneider Electric ATV21WD18N4C — AC Drive (VFD) 480V

Schneider Electric ATV21WD18N4C Altivar 21, 18.5 kW

MPNATV21WD18N4C
Obsolete

Schneider Electric Altivar 21 ATV21WD18N4C variable speed drive, 18.5 kW, 3-phase 380-480 V, IP20, integrated Class B EMC filter, 12.4 x 12.2 x 26.2 in.

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

Specifications

ATV21WD18N4C — Identification
ParameterValue
Product typeVariable speed drive
Product range / familyAltivar 21
ATV21WD18N4C — Power & Output
ParameterValue
Motor power (kW)18.5 kW
Max. transient current40.7 A 60 s
Apparent power23.2 kVA 380 V
ATV21WD18N4C — Input / Supply
ParameterValue
Input line current27.6 A 480 V 34.5 A 380 V
ATV21WD18N4C — Control & Performance
ParameterValue
Output frequency range0.5...200 Hz
Asynchronous motor control modesConstant voltage/frequency ratio Energy saving ratio Constant voltage/frequency ratio with automatic IR compensation Current flux vector control (FVC) without speed feedback Quadratic voltage/frequency ratio
ATV21WD18N4C — 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
ATV21WD18N4C — Mechanical & Cooling
ParameterValue
IP degree of protectionIP54 EN 60530 IP54 EN 61800-5-2 IP54 IEC 60529 IP54 IEC 61800-5-1
Acoustic noise level60.2 dB 86/188/EEC
Assembly / installation styleWith heat sink
ATV21WD18N4C — 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 degree2 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
ATV21WD18N4C — Approvals
ParameterValue
Certifications & markingCE
Standards complianceIEC 61800-3 environments 1 category C2 EN 61800-5-1 EN 61800-3 environments 2 category C3 EN 61800-3 environments 2 category C2 EN 61800-3 category C1 IEC 61800-3 environments 2 category C3 IEC 61800-3 environments 1 category C3 EN 61800-3 environments 2 category C1 EN 55011 group 1 class B EN 61800-3 environments 1 category C2 EN 61800-3 EN 61800-3 environments 1 category C1 IEC 61800-3 category C1 IEC 61800-3 environments 2 category C2 EN 61800-3 environments 1 category C3 IEC 61800-3 environments 1 category C1 IEC 61800-5-1 IEC 61800-3 environments 2 category C1 IEC 61800-3
ATV21WD18N4C — Communication
ParameterValue
Communication protocolsModbus

Product details

Drive sizing and supply window

The ATV21WD18N4C: Rated 18.5 kW for asynchronous motors on a 380-480 V supply, with a -15/+10% tolerance window that covers most industrial mains in North America and Europe. Line current draws 27.6 A at 480 V and 34.5 A at 380 V — size the input conductors and upstream protection for the higher figure at the lower voltage. Integrated Class B EMC filter meets EN 55011 Group 1 Class B, so external filtering is not required for most commercial environments.

Overload and switching frequency

Delivers 120% transient overtorque for 60 seconds — enough to clear a jammed pump or conveyor start without tripping. Switching frequency is adjustable from 6 to 16 kHz; above 8 kHz the drive must be derated per the manual, so plan the thermal budget if running quiet mode.

Panel fit and environment

Dimensions 12.4 x 12.2 x 26.2 in (315 x 310 x 665 mm) — vertical mounting with ±10° tolerance, heatsink on the back for through-panel cooling.

Frequently asked questions

How do I get current pricing and availability for ATV21WD18N4C?

Submit an RFQ through the storefront.

What compliance documentation does ATV21WD18N4C carry?

CE marked, compliant with IEC 61800-3 (environments 1 and 2, categories C1 through C3), EN 61800-5-1, and EN 55011 Group 1 Class B. The integrated EMC filter covers conducted emissions for most installations.

MPN
ATV21WD18N4C