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Schneider Electric ATH650U55N4 — AC Drive (VFD) 480V

Schneider ATH650U55N4 Altivar HVAC Drive, 5.5 kW, 7.5 hp

MPNATH650U55N4
Active

Schneider Electric Altivar HVAC ATH600 series, ATH650U55N4, 5.5 kW / 7.5 hp variable frequency drive, 380-480 V, wall mount, 254 x 189 x 375 mm.

Schneider Electric ATH650U55N4 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ATH650U55N4 — Identification
ParameterValue
Product typeVariable speed drive
Device short nameATH650
Product range / familyAltivar HVAC ATH600
ATH650U55N4 — Power & Output
ParameterValue
Motor power (kW)5.5 kW for normal duty 4.0 kW for heavy duty
Max. transient current13.2 A during 60 s (normal duty) 13.7 A during 60 s (heavy duty)
Apparent power6.7 kVA (normal duty) 5.0 kVA (heavy duty)
ATH650U55N4 — Input / Supply
ParameterValue
Rated supply voltage range380...480 V - 15...10 %
Input line current9.331 A at 380 V (normal duty) 8.1 A at 480 V (normal duty) 7 A at 380 V (heavy duty) 6 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
ATH650U55N4 — 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
ATH650U55N4 — 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)5 kA
ATH650U55N4 — Mechanical & Cooling
ParameterValue
IP degree of protectionIP55 Type 12
Acoustic noise level53 dB
ATH650U55N4 — 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
ATH650U55N4 — 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
ATH650U55N4 — Communication
ParameterValue
Communication protocolsModbus serial BACnet MS/TP

Product details

The Schneider ATH650U55N4 is an Altivar HVAC drive sized for a 5.5 kW (7.5 hp) motor at 380-480 V three-phase. Normal duty line current is 9.331 A at 380 V; heavy duty drops to 7 A at 380 V, so the motor load curve dictates which rating applies. Integrated Class C2 EMC filter covers most commercial installations without an external box. Wall-mount format — 254 mm deep, 189 mm wide, 375 mm tall — fits a standard panel backplate.

Controls and fieldbus

Standard RS-485 port runs Modbus RTU or BACnet MS/TP at selectable baud rates up to 76.8 kbit/s. Optional communication cards add BACnet IP, PROFINET, or Ethernet IP/Modbus TCP. The control supply is 24 V DC (19...30 V external); internal supplies handle digital inputs, STO, and a 10.5 V reference for the potentiometer. Six digital inputs, two analog inputs, two analog outputs, and three relay outputs cover basic HVAC sequencing without an I/O extension.

Application functions

Built-in PID controller with three additional PID sets, fire mode, forced fire mode, damper control, scroll compressor management, underload detection for broken belt, catch on the fly, and power monitoring. These are not optional firmware — they are standard on this variant. Sampling times for digital inputs are 2 ms + 0.5 ms; analog inputs sample at 5 ms + 1 ms, adequate for HVAC pressure and temperature loops.

Frequently asked questions

What are the key ratings for the ATH650U55N4?

It is rated 5.5 kW (7.5 hp) normal duty, 4.0 kW (5 hp) heavy duty, with line current 9.331 A at 380 V normal duty and 7 A at 380 V heavy duty. Output frequency is 0.4 kHz. Safety functions include STO at SIL 3 / PL e.

What compliance documentation does this drive carry?

Markings include CE, UKCA, CULus, EAC, RCM, ATEX, WEEE, RoHS, KCC. Standards met include 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, and RoHS.

What is the physical size of the ATH650U55N4?

Dimensions are 254 mm depth, 189 mm width, 375 mm height. Weight is 5.1 kg. Mounting is wall-mount only.

MPN
ATH650U55N4