{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATV21WD45N4C","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"ATV21WD45N4C","canonicalUrl":"https://aoctrl.com/schneider/ATV21WD45N4C","factsUrl":"https://aoctrl.com/api/mcp/products/ATV21WD45N4C","rawCanonicalId":null},"summary":{"shortDescription":"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.","salesMarkdown":"## 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.","metaTitle":"Schneider Electric ATV21WD45N4C AC Drive 45 kW, 380-480 V","metaDescription":"Schneider Electric ATV21WD45N4C Altivar 21 AC drive, 45 kW, 380-480 V 3-phase input, 65.9 A line current at 480 V, integrated Class B EMC filter, CE marked.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["AC Drive (VFD) 480V"],"specifications":{"Depth":"13.5 in (343 mm)","Phase":"3 phase","Width":"11.2 in (284 mm)","Height":"34.6 in (880 mm)","Marking":"CE","Category":"22158-ATV212 30 - 100 HP 460 VOLT","Standards":"IEC 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","Diagnostic":"1 LED (red) for DC bus energized","EMC filter":"Class B EMC filter integrated","Data format":"8 bits, 1 stop, odd even or no configurable parity","Noise level":"64 dB 86/188/EEC","Option card":"Communication card APOGEE FLN Communication card BACnet Communication card LonWorks Communication card METASYS N2","Speed range":"1...10","Line current":"65.9 A 480 V 83.8 A 380 V","Apparent power":"61.9 kVA 380 V","Assembly style":"With heat sink","Component name":"ATV21","Connector Type":"1 RJ45","Motor power kW":"45 kW","Output voltage":"= 1 mOhm 500 V DC for 1 minute","Speed accuracy":"+/- 10 % of nominal slip 0.2 Tn to Tn","Regulation loop":"Adjustable PI regulator","Torque accuracy":"+/- 15 %","lifecycle_stage":"mature","Pollution degree":"3 IEC 61800-5-1","Range of Product":"Altivar 21","Shock resistance":"15 gn 11 ms IEC 60068-2-27","Relative humidity":"5...95 % without condensation IEC 60068-2-3 5...95 % without dripping water IEC 60068-2-3","Transmission Rate":"9600 bps or 19200 bps","Operating position":"Vertical +/- 10 degree","Physical interface":"2-wire RS 485","Transmission frame":"RTU","Dielectric strength":"3535 V DC between earth and power terminals 5092 V DC between control and power terminals","Number of addresses":"1...247","Product destination":"Asynchronous motors","Switching frequency":"6...16 kHz adjustable 8...16 kHz with derating factor","Frequency resolution":"Analog input 0.024/50 Hz Display unit 0.1 Hz","Power Supply Voltage":"380...480 V - 15...10 %","Transient overtorque":"120 % of nominal motor torque +/- 10 % 60 s","Type of polarization":"No impedance","Vibration resistance":"1 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","Communication Service":"Read device identification (43) Write multiple registers (16) 2 words maximum Monitoring inhibitable Time out setting from 0.1 to 100 s Read holding registers (03) 2 words maximum Write single register (06)","Power Supply Frequency":"50...60 Hz - 5...5 %","IP degree of protection":"IP54 EN 60530 IP54 EN 61800-5-2 IP54 IEC 60529 IP54 IEC 61800-5-1","Motor slip compensation":"Automatic whatever the load Not available in voltage/frequency ratio motor control Adjustable","Maximum transient current":"103.4 A 60 s","Product or Component Type":"Variable speed drive","Maximum Horse Power Rating":"60 hp","Communication Port Protocol":"Modbus","Nominal switching frequency":"8 kHz","Power Supply Voltage Limits":"323...528 V","Environmental characteristic":"Classes 3C1 conforming to IEC 60721-3-3 Classes 3S2 conforming to IEC 60721-3-3","Product Specific Application":"Pumps and fans in HVAC","Speed drive output frequency":"0.5...200 Hz","maximum prospective line Isc":"22 kA","Electromagnetic compatibility":"1.2/50 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","Power Supply Frequency Limits":"47.5...63 Hz","Maximum Continuous Output Current":"94 A 380 V 94 A 460 V","Asynchronous motor control profile":"Constant 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","Ambient Air Temperature for Storage":"-13...158 °F (-25...70 °C)","Ambient air temperature for operation":"14...104 °F (-10...40 °C) (without derating) 104...122 °F (40...50 °C) (with derating factor)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/ie/en/product/ATV21WD45N4C/variable-speed-drive-atv21-45kw-60hp-480v-class-b-emc-filter-ip54/","alternativesUrl":"https://aoctrl.com/api/mcp/products/ATV21WD45N4C/alternatives.json"},"ai":{"faq":[{"question":"What is ATV21WD45N4C's listed depth?","answer":"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."},{"question":"What compliance documentation does Schneider Electric provide for ATV21WD45N4C?","answer":"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."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/ATV21WD45N4C","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/ATV21WD45N4C when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}