{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATV21HD37N4","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"ATV21HD37N4","canonicalUrl":"https://aoctrl.com/schneider/ATV21HD37N4","factsUrl":"https://aoctrl.com/api/mcp/products/ATV21HD37N4","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Altivar 21 ATV21HD37N4 AC drive, 37 kW, 380-480 V 3-phase, 54.4 A line current, IP20, CE marked.","salesMarkdown":"## 37 kW VFD for pump and fan duty The ATV21HD37N4 is a 37 kW Altivar 21 AC drive from Schneider Electric, designed for variable-torque loads such as pumps and fans. It accepts a 380-480 V three-phase supply and delivers a line current of 54.4 A at 480 V (68.9 A at 380 V). The drive includes a built-in Class A EMC filter and carries CE marking, complying with IEC 61800-3 for EMC environments and IEC 61800-5-1 for safety. This simplifies panel integration in European and other CE-regulated markets. ## Panel fit and mounting dimensions The drive measures 21.7 inches high by 9.4 inches wide by 4.4 inches deep (550 x 240 x 113 mm). The vertical mounting orientation is specified within ±10 degrees. The assembly includes a heat sink for thermal management, and the enclosure is rated UL Type 1 for indoor use. ## Switching frequency and torque capability The switching frequency is adjustable from 6 to 16 kHz, with derating required above 8 kHz. This allows the user to trade off audible noise against thermal headroom. The drive delivers 120% transient overtorque for 60 seconds, which is useful for breakaway loads or short-duration overloads.","metaTitle":"Schneider Electric ATV21HD37N4 AC Drive (VFD) 480V, 37 kW","metaDescription":"Schneider Electric ATV21HD37N4 Altivar 21 AC drive, 37 kW, 380-480 V 3-phase, 54.4 A line current, mature lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["AC Drive (VFD) 480V"],"specifications":{"Depth":"4.4 in (113 mm)","Phase":"3 phase","Width":"9.4 in (240 mm)","Height":"21.7 in (550 mm)","Marking":"CE","Category":"22158-ATV212 30 - 100 HP 460 VOLT","Standards":"IEC 61800-3 environments 1 category C2 EN 61800-3 environments 1 category C3 IEC 61800-5-1 IEC 61800-3 environments 2 category C1 IEC 61800-3 environments 2 category C2 IEC 61800-3 category C3 IEC 61800-3 environments 2 category C3 IEC 61800-3 category C2 IEC 61800-3 UL Type 1 EN 61800-3 environments 1 category C2 EN 61800-3 environments 2 category C3 EN 61800-3 category C2 IEC 61800-3 environments 1 category C1 EN 61800-3 category C3 IEC 61800-3 environments 1 category C3 EN 61800-5-1 EN 61800-3 environments 1 category C1 EN 61800-3 environments 2 category C1 EN 55011 class A group 1 EN 61800-3 environments 2 category C2 EN 61800-3","Diagnostic":"1 LED (red) for DC bus energized","EMC filter":"Class A 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":"54.4 A 480 V 68.9 A 380 V","Apparent power":"52 kVA 380 V","Assembly style":"With heat sink","Component name":"ATV21","Connector Type":"1 RJ45","Motor power kW":"37 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":"Monitoring inhibitable Read holding registers (03) 2 words maximum Time out setting from 0.1 to 100 s Read device identification (43) Write single register (06) Write multiple registers (16) 2 words maximum","Power Supply Frequency":"50...60 Hz - 5...5 %","IP degree of protection":"IP20 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","Motor slip compensation":"Automatic whatever the load Adjustable Not available in voltage/frequency ratio motor control","Maximum transient current":"86.9 A 60 s","Product or Component Type":"Variable speed drive","Maximum Horse Power Rating":"50 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":"79 A 380 V 79 A 460 V","Asynchronous motor control profile":"Quadratic voltage/frequency ratio Constant voltage/frequency ratio with automatic IR compensation Energy saving ratio Current flux vector control (FVC) without speed feedback Constant voltage/frequency 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":"$5,698.36","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/in/en/product/ATV21HD37N4/variable-speed-drive-atv21-37kw-50hp-480v-emc-filter-class-a-ip20/","alternativesUrl":"https://aoctrl.com/api/mcp/products/ATV21HD37N4/alternatives.json"},"ai":{"faq":[{"question":"Who supplies ATV21HD37N4 and how is it quoted for volume purchases?","answer":"This part is sourced through independent industrial-automation distribution. Volume quantities are quoted to order against the BOM; availability and current pricing are confirmed at RFQ time."},{"question":"What compliance documentation does Schneider Electric provide for ATV21HD37N4?","answer":"The drive carries CE marking and complies with IEC 61800-3 (EMC environments 1 and 2, categories C1 to C3) and IEC 61800-5-1 (safety). A Class A EMC filter is integrated. The enclosure meets UL Type 1."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/ATV21HD37N4","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/ATV21HD37N4 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}}