{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATH650D37N4","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"ATH650D37N4","canonicalUrl":"https://aoctrl.com/schneider/ATH650D37N4","factsUrl":"https://aoctrl.com/api/mcp/products/ATH650D37N4","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Altivar ATH600 series, ATH650D37N4 AC drive, 37 kW / 50 hp normal duty, 30 kW / 40 hp heavy duty, 480 V, 66.2 A line current, STO SIL 3, IP20, wall mount.","salesMarkdown":"## Duty ratings and motor power The ATH650D37N4 is rated for 37 kW (50 hp) in normal duty and 30 kW (40 hp) in heavy duty, with the line current at 480 V normal duty being 57 A and 48.3 A in heavy duty. The heavy-duty rating at 380 V draws 54.8 A, which is the higher current condition to check when sizing upstream protection. ## Safety function and SIL 3 The drive integrates Safe Torque Off (STO) certified to SIL 3 per IEC 61508 and PL e per ISO 13849-1, which means it can be used as the primary safety isolation in a drive safety circuit without an external contactor. STO removes the motor torque without disconnecting the mains power, so the drive control power and fieldbus communication remain active during the safety demand. ## Integrated EMC filter and compliance The Class C2 EMC filter is integrated, covering conducted emissions for most industrial environments up to the first environment (domestic/commercial) with restricted distribution. Markings include CE, UKCA, CULus, EAC, RCM, ATEX, and KCC, covering European, North American, Eurasian, Australian, and Korean regulatory jurisdictions. ## Application-specific functions Built-in fire mode, forced fire mode, scroll compressor management, damper control, and underload detection for broken belt are standard firmware features, so no additional option card is needed for these HVAC and pumping applications. The drive supports catch on the fly and power monitoring, which reduces nuisance trips when the motor is already spinning.","metaTitle":"Schneider ATH650D37N4 Altivar 600 VFD, 37 kW/50 hp","metaDescription":"Schneider Electric ATH650D37N4 Altivar 600 AC drive. 37 kW normal duty / 30 kW heavy duty. STO SIL 3, integrated C2 EMC filter. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["AC Drive (VFD) 480V"],"specifications":{"Depth":"340 mm","Width":"307 mm","title":"ATH650D37N4","Height":"948.5 mm","Supply":"External supply for control circuit: 24 V DC (19...30 V), Internal supply for digital inputs and STO: 24 V DC (20.4...27 V), Internal supply for reference potentiometer: 10.5 V DC +/- 5 %, <10 mA, protection type: short-circuit","Marking":"CE UKCA CULus EAC RCM ATEX WEEE ROHS KCC","Variant":"Standard version","Accuracy":"+/- 1.5 % (AI1, AI2, AI3) for a temperature variation 60 °C +/- 1 % (AQ1, AQ2) for a temperature variation 60 °C","Standards":"UL 61800-5-1 EN/IEC 61800-3 EN/IEC 61800-5-1 IEC 61000-3-12 IEC 60721-3 IEC 61508 IEC 13849-1 RoHS","EMC filter":"Class C2 EMC filter integrated","Data format":"8 bits, configurable odd, even or no parity 8 bits, no parity, 1 stop","Noise level":"69.7 dB","Option card":"Communication module for BACnet IP Communication module for PROFINET Communication module for Ethernet IP/Modbus TCP Digital and analog I/O extension module Output relay extension module","description":"variable speed drive, Altivar HVAC ATH600, ATH650, 37kW, 50hp, 380 to 480V, 3 phase, IP55","Line current":"66.2 A at 380 V (normal duty) 57 A at 480 V (normal duty) 54.8 A at 380 V (heavy duty) 48.3 A at 480 V (heavy duty)","Safety level":"SIL 3 conforming to IEC 61508 PL = e conforming to ISO 13849-1","Mounting mode":"Wall mount","Apparent power":"47.6 kVA (normal duty) 40.2 kVA (heavy duty)","Connector type":"RJ45 and open style terminals","Motor power hp":"50 hp for normal duty 40 hp for heavy duty","Motor power kW":"37 kW for normal duty 30 kW for heavy duty","Output voltage":"<= power supply voltage","Product weight":"50 kg","Linearity error":"AI1, AI2, AI3: +/- 0.15 % of maximum value for analog input AQ1, AQ2: +/- 0.2 % for analog output","Protection type":"Thermal overload protection: motor Safe torque off: motor Motor phase loss: motor Against exceeding limit speed: motor Temperature protection: drive Overheating: drive Output overcurrent between motor phase and earth: drive Output overcurrent between motor phases: drive Short-circuit between motor phase and earth: drive Short-circuit between motor phases: drive DC Bus overvoltage: drive Line supply overvoltage: drive Line supply undervoltage: drive Input supply loss: drive Break on the control circuit: drive","Safety function":"STO (safe torque off)","lifecycle_stage":"current","Method of access":"Server Modbus RTU Subordinate BACnet MS/TP","Output frequency":"0.5 kHz","Pollution degree":"2","Range of product":"Altivar HVAC ATH600","Supply frequency":"50...60 Hz - 5...5 %","Device short name":"ATH650","Relative humidity":"5...95 % without condensation conforming to IEC 60068-2-3","Relay output type":"Relay outputs R1A, R1B, R1C: 1 NO 1 NC electrical durability 100000 cycles Relay outputs R2A, R2C: 1 NO electrical durability 100000 cycles Relay outputs R3A, R3C: 1 NO electrical durability 100000 cycles","Sampling duration":"2 ms + 0...0.5 ms DI1...DI6 digital input 5 ms + 0...1 ms DI5, DI6 pulse input 5 ms + 0...1 ms AI1, AI2, AI3 10 ms + 0...1 ms AQ1, AQ2 5 ms +/- 0.5 ms R1, R2, R3","Transmission rate":"4800 bps, 9600 bps, 19200 bps, 38.4 Kbps 9.6, 19.2, 38.4, 76.8 kbit/s","Function available":"Fire mode Forced fire mode Run permissive PID controller 3 additional PID Damper control Underload detection for broken belt Scroll compressor management Skipped frequencies Catch on the fly Power monitoring Cybersecure firmware update","Operating altitude":"1000 m without derating 1000...3000 m with current derating 1 % per 100 m","Operating position":"Vertical position","Physical interface":"2-wire RS 485","Transmission frame":"RTU MS/TP","Analogue input type":"AI1: 0...10 V DC, impedance: 30 kOhm, resolution 12 bits AI2: 0...20 mA (or 4-20 mA, x-20 mA, 20-x mA or other patterns by configuration), impedance: 250 Ohm, resolution 12 bits AI3: 0...20 mA (or 4-20 mA, x-20 mA, 20-x mA or other patterns by configuration), impedance: 250 Ohm, resolution 12 bits AI2, AI3 PTC/PT 100/PT 1000/KTY84 temperature probe","Discrete input type":"STOA, STOB safety input, 24 V DC DI1...DI6 digital input, 24 V DC, impedance: 4.4 kOhm DI5, DI6 programmable as pulse input: 0...30 kHz, 24 V DC","Input compatibility":"DI1...DI6: discrete input level 1 PLC conforming to IEC 61131-2 DI5, DI6: pulse input level 1 PLC conforming to IEC 65A-68 STOA, STOB: discrete input level 1 PLC conforming to IEC 61131-2","Number of addresses":"1...247 1...127","Product destination":"Asynchronous motors Synchronous motors","Relay output number":"3","Switching frequency":"2...16 kHz adjustable with derating factor","Analogue output type":"Software-configurable voltage AQ1, AQ2: 0...10 V impedance 470 Ohm, resolution 10 bits Software-configurable current AQ1, AQ2: 0...20 mA, resolution 10 bits","Discrete input logic":"Positive logic (source) (DI1...DI6), Positive logic (source) (STOA, STOB), Negative logic (sink) (DI1...DI6), > 16 V (state 0), < 10 V (state 1) Positive logic (source) (DI5, DI6), < 0.6 V (state 0), > 2.5 V (state 1)","Prospective line Isc":"50 kA","Type of polarization":"120 ohm termination or no impedance","Analogue input number":"3","Braking to standstill":"By DC injection","Discrete input number":"8","Analogue output number":"2","Cybersecurity function":"True","Nominal Output Current":"74.5 A at 380 V (normal duty) 74.5 A at 480 V (normal duty) 61.5 A at 380 V (heavy duty) 61.5 A at 480 V (heavy duty)","Power dissipation in W":"1030 W, switching frequency 4 kHz (normal duty) 774 W, switching frequency 4 kHz (heavy duty)","IP degree of protection":"IP55","Motor slip compensation":"Adjustable Automatic whatever the load Can be suppressed Not available with synchronous motors","Brake chopper integrated":"False","Network number of phases":"3 phases","Maximum switching current":"Relay output R1, R2, R3 on resistive load load: 3 A at 250 V AC Relay output R1, R2, R3 on resistive load load: 3 A at 30 V DC Relay output R1, R2, R3 on inductive load load, cos phi = 0.4 and L/R = 0.7 ms: 2 A at 250 V AC Relay output R1, R2, R3 on inductive load load, cos phi = 0.4 and L/R = 0.7 ms: 2 A at 30 V DC","Maximum transient current":"82.0 A during 60 s (normal duty) 92.3 A during 60 s (heavy duty)","Minimum switching current":"Relay output R1, R2, R3: 5 mA at 24 V DC","Product or component type":"Variable speed drive","[Us] rated supply voltage":"380...480 V - 15...10 %","Communication port protocol":"Modbus serial BACnet MS/TP","Nominal switching frequency":"4 kHz","Product specific application":"HVAC","4 Quadrant Operation Possible":"False","Electromagnetic compatibility":"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 Electrical fast transient/burst immunity test level 4 conforming to IEC 61000-4-4 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","Cybersecurity level and standard":"Security level (SL) 1 conforming to IEC 62443-4-2","Synchronous motor control profile":"Vector control without sensor","Asynchronous motor control profile":"Voltage/frequency ratio, 5 points Flux vector control with sensor, standard Voltage/frequency ratio - Energy Saving, quadratic U/f Flux vector control without sensor - Energy Saving Voltage/frequency ratio, 2 points","Acceleration and deceleration ramps":"Acceleration/deceleration ramp adaptation Linear S, U or customized","Ambient air temperature for storage":"-40...70 °C","Ambient air temperature for operation":"-15...40 °C without derating 40...50 °C with derating factor","Power Loss Static Current Independent":"31 W","Environmental class (during operation)":"Class 3C3 according to IEC 60721-3-3 Class 3S3 according to IEC 60721-3-3 Class 3B1 according to IEC 60721-3-3","Relative symmetric mains voltage tolerance":"10 %","With safety function Safe torque off (STO)":"True","Relative symmetric network frequency tolerance":"5 %","Maximum acceleration under shock impact (during operation)":"15 gn at 11 ms","Maximum deflection under vibratory load (during operation)":"1.5 mm at 2...13 Hz","Maximum acceleration under vibrational stress (during operation)":"1 gn at 13...200 Hz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/th/en/product/ATH650D37N4/variable-speed-drive-altivar-hvac-ath600-ath650-37kw-50hp-380-to-480v-3-phase-ip55/"},"ai":{"faq":[{"question":"What is the ATH650D37N4 used for?","answer":"It is a variable frequency drive for three-phase induction motors in HVAC, pumping, and industrial applications up to 37 kW normal duty or 30 kW heavy duty at 480 V input."},{"question":"What compliance documentation does Schneider provide for the ATH650D37N4?","answer":"The drive carries CE, UKCA, CULus, EAC, RCM, ATEX, WEEE, RoHS, and KCC markings. Standards compliance includes UL 61800-5-1, EN/IEC 61800-3, EN/IEC 61800-5-1, IEC 61000-3-12, IEC 60721-3, IEC 61508, and ISO 13849-1."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/ATH650D37N4","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/ATH650D37N4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}