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Schneider Electric ATH650D37N4 — AC Drive (VFD) 480V

Schneider ATH650D37N4 Altivar 600 VFD, 37 kW/50 hp

MPNATH650D37N4
Active

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.

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

Specifications

ATH650D37N4 — Identification
ParameterValue
Product typeVariable speed drive
Device short nameATH650
Product range / familyAltivar HVAC ATH600
ATH650D37N4 — Power & Output
ParameterValue
Motor power (kW)37 kW for normal duty 30 kW for heavy duty
Max. transient current82.0 A during 60 s (normal duty) 92.3 A during 60 s (heavy duty)
Apparent power47.6 kVA (normal duty) 40.2 kVA (heavy duty)
ATH650D37N4 — Input / Supply
ParameterValue
Rated supply voltage range380...480 V - 15...10 %
Input line current66.2 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)
Network number of phases3 phases
Internal/auxiliary suppliesExternal 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
ATH650D37N4 — Control & Performance
ParameterValue
Asynchronous motor control modesVoltage/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
Synchronous motor control modesVector control without sensor
ATH650D37N4 — Protection & EMC
ParameterValue
Integrated EMC filter classClass C2 EMC filter integrated
Protection functionsThermal 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
EMC immunity testsElectrostatic 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
Prospective short-circuit current (Isc)50 kA
ATH650D37N4 — Mechanical & Cooling
ParameterValue
IP degree of protectionIP55
Acoustic noise level69.7 dB
ATH650D37N4 — Environmental
ParameterValue
Operating ambient temperature-15...40 °C without derating 40...50 °C with derating factor
Operating altitude1000 m without derating 1000...3000 m with current derating 1 % per 100 m
Relative humidity5...95 % without condensation conforming to IEC 60068-2-3
Storage / transport temperature-40...70 °C
Pollution degree2
ATH650D37N4 — Approvals
ParameterValue
Certifications & markingCE UKCA CULus EAC RCM ATEX WEEE ROHS KCC
Standards complianceUL 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
ATH650D37N4 — Communication
ParameterValue
Communication protocolsModbus serial BACnet MS/TP

Product details

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.

Frequently asked questions

What is the ATH650D37N4 used for?

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.

What compliance documentation does Schneider provide for the ATH650D37N4?

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.

MPN
ATH650D37N4