{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATV21W075N4C","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"ATV21W075N4C","canonicalUrl":"https://aoctrl.com/schneider/ATV21W075N4C","factsUrl":"https://aoctrl.com/api/mcp/products/ATV21W075N4C","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Altivar 21 ATV21W075N4C AC drive, 0.75 kW, 380-480 V 3-phase, 1.4 A line current, integrated Class B EMC filter, CE.","salesMarkdown":"## 0.75 kW drive for HVAC fan and pump loads The ATV21W075N4C is a 0.75 kW Altivar 21 variable frequency drive designed for asynchronous motors in constant-torque and variable-torque applications — typically HVAC fans, pumps, and compressors where the load profile matches the PI regulator and the 1:10 speed range. It accepts 380–480 V three-phase input at -15%/+10% tolerance, drawing 1.4 A at 480 V or 1.7 A at 380 V, with an apparent power of 1.6 kVA at 380 V. ## Switching frequency and derating The adjustable switching frequency spans 6–16 kHz, but above 12 kHz a derating factor applies — expect reduced continuous output current if you push the carrier frequency to quiet motor whine. Transient overtorque is rated at 120% of nominal motor torque for 60 seconds, which gives headroom for starting high-inertia loads like centrifugal fans. ## EMC and standards compliance An integrated Class B EMC filter is fitted as standard, and the drive carries CE marking with multiple IEC/EN 61800-3 environment categories (C1, C2, C3) plus EN 55011 Group 1 Class B — meaning it is suitable for residential and light-industrial installations without an external filter in most cases. Pollution degree 2 per IEC 61800-5-1, and the dielectric strength is tested at 3535 V DC between earth and power terminals, 5092 V DC between control and power terminals. ## Communication and option cards The drive includes a 2-wire RS-485 physical interface with RTU protocol, configurable baud rates of 9600 or 19200 bps, and supports up to 247 addresses on the bus. Optional communication cards are available for APOGEE FLN, BACnet, LonWorks, and METASYS N2 — important for building management system integration. ## Sourcing and lifecycle No official successor or cross-reference is recorded for this order code; the Altivar 21 series remains the current platform for this power class.","metaTitle":"Schneider ATV21W075N4C AC Drive (VFD) 480V, 0.75 kW","metaDescription":"Schneider Electric ATV21W075N4C Altivar 21 VFD, 0.75 kW, 380-480 V 3-phase, 1.4 A line current, 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":"7.6 in (192 mm)","Phase":"3 phase","Width":"8.5 in (215 mm)","Height":"11.3 in (287 mm)","Marking":"CE","Category":"22157-ATV212 1 - 25 HP 460 VOLT","Standards":"IEC 61800-3 environments 1 category C3 IEC 61800-3 IEC 61800-3 environments 1 category C1 IEC 61800-3 category C1 IEC 61800-3 environments 2 category C2 EN 61800-3 environments 1 category C2 IEC 61800-3 environments 2 category C1 IEC 61800-5-1 EN 61800-3 environments 1 category C1 EN 55011 group 1 class B IEC 61800-3 environments 2 category C3 EN 61800-3 environments 1 category C3 EN 61800-5-1 EN 61800-3 environments 2 category C1 EN 61800-3 category C1 IEC 61800-3 environments 1 category C2 EN 61800-3 environments 2 category C3 EN 61800-3 EN 61800-3 environments 2 category C2","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":"48 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":"1.4 A 480 V 1.7 A 380 V","Apparent power":"1.6 kVA 380 V","Assembly style":"With heat sink","Component name":"ATV21","Connector Type":"1 RJ45","Motor power kW":"0.75 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":"2 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 altitude":"3280.84...9842.52 ft (1000...3000 m) limited to 2000 m for the Corner Grounded distribution network","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":"12...16 kHz with derating factor 6...16 kHz adjustable","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":"Write single register (06) Read holding registers (03) 2 words maximum Write multiple registers (16) 2 words maximum Monitoring inhibitable Time out setting from 0.1 to 100 s Read device identification (43)","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":"2.4 A 60 s","Product or Component Type":"Variable speed drive","Maximum Horse Power Rating":"1 hp","Communication Port Protocol":"Modbus","Nominal switching frequency":"12 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":"5 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":"2.2 A 380 V 2.2 A 460 V","Asynchronous motor control profile":"Quadratic voltage/frequency ratio Constant voltage/frequency ratio Constant voltage/frequency ratio with automatic IR compensation Current flux vector control (FVC) without speed feedback 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":"$300.36","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/us/en/product/ATV21W075N4C/variable-speed-drive-atv21-0-75kw-1hp-480v-emc-filter-class-b-ip54/","alternativesUrl":"https://aoctrl.com/api/mcp/products/ATV21W075N4C/alternatives.json"},"ai":{"faq":[{"question":"What is ATV21W075N4C's listed depth?","answer":"The depth is 7.6 inches (192 mm). Combined with a width of 8.5 inches (215 mm) and height of 11.3 inches (287 mm), it fits standard 400 mm deep enclosures with room for wiring clearance."},{"question":"What communication protocols does the ATV21W075N4C support?","answer":"The drive has a built-in 2-wire RS-485 interface with Modbus RTU protocol at 9600 or 19200 bps. Optional communication cards add APOGEE FLN, BACnet, LonWorks, or METASYS N2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/ATV21W075N4C","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/ATV21W075N4C 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}}