Schneider ATV310HU40N4E — 4 kW VFD Buyer Guide

By Abdullah Zahid
9 min read
Schneider Electric ATV310HU40N4E Easy Altivar 310 compact 4 kW variable speed drive for 3-phase motor control

Schneider Electric ATV310HU40N4E Easy Altivar 310 Variable Speed Drive — Specs, Pricing, and Buyer Guide

When a controls engineer or procurement specialist searches for the Schneider Electric ATV310HU40N4E by exact catalog number, the decision is already close. The question is no longer "what type of drive do I need" — it is "does this specific model match my motor, my supply voltage, and my communication setup?" The ATV310HU40N4E is a compact Easy Altivar 310 frequency inverter rated at 4 kW in heavy duty service and 5.5 kW in normal duty, accepting a 380–460V 3-phase input supply and delivering sensorless flux vector motor control with integrated Modbus RTU communication and a verified weight of 1.8 kg.

If you have already confirmed this is the right part, check current pricing and availability at LeadTime.ca — ships worldwide.

Who Should Buy the ATV310HU40N4E — and Who Shouldn't

The ATV310HU40N4E is the right drive when your application meets all of the following criteria:

  • Your plant supply is 3-phase 380–460V AC — single-phase supply is not supported by this model
  • Your motor rated power does not exceed 4 kW in heavy duty (intermittent high-torque loads) or 5.5 kW in normal duty (continuous smooth-running loads such as pumps and fans)
  • Your output current demand stays within 9.5 A at heavy duty or 12.1 A at normal duty continuous rating
  • Your control system communicates via Modbus RTU over RS485 serial — native Ethernet is not available on this model
  • Your installation environment is dry and indoor — IP20 protection does not cover moisture, water spray, or condensation without an external enclosure

If your motor exceeds 5.5 kW, your site requires Ethernet connectivity, or your supply is single-phase, this model is not the correct choice. The Altivar 310 family extends to 7.5 kW, 11 kW, 15 kW, and 22 kW variants, and other product families cover single-phase and Ethernet requirements.

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What the ATV310HU40N4E Actually Does in a Motor Control System

The ATV310HU40N4E sits between a 3-phase power supply and a 3-phase asynchronous induction motor, converting fixed-frequency line power into variable-frequency output that the motor follows precisely. Rather than running a motor at a fixed line frequency — and throttling flow or speed through mechanical means — the drive modulates both voltage and frequency electronically, producing the exact shaft speed the process demands. Output frequency range spans 0.5 to 400 Hz, covering low-creep control through overspeed operation on light loads.

The control method is sensorless flux vector control, which eliminates the requirement for a shaft-mounted encoder or external speed feedback sensor. Motor slip compensation is built in, maintaining near-constant shaft speed despite load variations without additional hardware. The quadratic voltage-to-frequency profile is optimized for asynchronous induction motors — improving efficiency and motor thermal management at low speeds, which is particularly important in pump and fan applications where load torque drops sharply with speed reduction.

Four protection functions are integrated as standard: thermal motor protection (cumulative heating model), overcurrent protection (locked rotor and phase imbalance detection), overvoltage protection (supply transient defence), and undervoltage protection (safe shutdown on low supply events). These four functions reduce the external relay logic count in the motor control circuit, lowering bill-of-materials complexity for OEM machine builders. One critical point the datasheet is explicit about: the ATV310HU40N4E does not include an integrated circuit breaker, and a mechanical overcurrent protection device must be installed upstream of the drive input — this is not optional, and it satisfies electrical code requirements independently of the drive's internal electronics.

Typical System Architecture and Signal Chain

The ATV310HU40N4E connects downstream from the main distribution panel, positioned between the upstream protection device and the motor. Here is the typical component chain in a standard installation:

  • 3-phase distribution panel (380–460V) → external overcurrent protection device (contactor plus overload relay, or motor protection relay rated to 9.5 A heavy duty or 12.1 A normal duty)
  • Overcurrent protection output → ATV310HU40N4E input terminals L1, L2, L3 (2.5–4 mm² wire clamping)
  • ATV310HU40N4E output terminals U, V, W → 3-phase asynchronous induction motor (4 kW or 5.5 kW depending on duty cycle)
  • Speed reference input → drive analog input (0–10V signal from PLC analog output) or RS485 Modbus RTU command from PLC/SCADA serial port
  • Modbus RTU RS485 bus → PLC or HMI for remote speed command, parameter read-back, and fault code reporting

Where Engineers Deploy This Drive

Pump speed control is the most common deployment for this class of drive. In cooling water circulation, process transfer, and dosing applications, running a pump at full line frequency when demand is partial wastes energy and creates unnecessary wear. The ATV310HU40N4E accepts a temperature or flow feedback signal as a speed reference, allowing the pump to match flow precisely to demand rather than throttling through a control valve.

Fan and ventilation speed modulation is the second major use case. Building HVAC systems, industrial cooling fans, and compressed air cooling loops all benefit from proportional speed reduction at part load. Because fan shaft power drops with the cube of speed reduction, even a modest speed reduction produces significant energy savings — the drive enables this without any mechanical modification to the fan or ducting.

Conveyor belt control is a strong fit for the ATV310HU40N4E's adjustable acceleration and deceleration ramp times, which are programmable across a wide range. Controlled acceleration on startup reduces mechanical stress on the drivetrain, and controlled deceleration prevents product damage at the end of a belt run. The drive supports both forward and reverse motor direction, enabling unload cycles without external contactors for direction reversal.

Compressor capacity modulation and OEM machine integration round out the primary application set. In compressor applications, modulating motor speed to match actual compressed air demand reduces heat generation, extends component life, and eliminates the energy waste inherent in unload-mode cycling. For OEM panel builders, the 1.8 kg weight and compact footprint reduce cabinet structural requirements and assembly time, and the macro configuration function reduces per-unit engineering labour on repeat production runs.

Application Typical Deployment
Process pump control Variable-flow cooling water or dosing system with analog speed reference from temperature or flow controller
HVAC fan regulation Building ventilation with occupancy or temperature feedback to ATV310HU40N4E Modbus RTU command from BMS
Conveyor belt drive Material handling line with programmable acceleration and deceleration ramps; forward/reverse control for unload cycles
Compressor modulation Compressed air system where motor speed matches demand rather than unload cycling; reduces heat and duty cycle stress
OEM machine integration Compact control panel for packaging, mixing, or agitation equipment; macro configuration reduces per-unit commissioning time

Key Electrical and Environmental Specifications

Specification Heavy Duty Rating Normal Duty Rating
Motor Power Output 4.0 kW (5.5 HP) 5.5 kW (7.5 HP)
Input Supply Voltage 380–460V AC 3-phase 380–460V AC 3-phase
Voltage Tolerance ±15% to ±10% ±15% to ±10%
Nominal Output Current 9.5 A 12.1 A
Transient Current Peak (60 sec) 14.3 A 13.3 A
Input Apparent Power 9.1 kVA 15.1 kVA
Output Frequency Range 0.5–400 Hz 0.5–400 Hz
Switching Frequency 4 kHz nominal (2–12 kHz adjustable) 4 kHz nominal (2–12 kHz adjustable)
Protection Class IP20 IP20
Operating Temperature -10 to +50 °C -10 to +50 °C

Full technical specifications are available on the product page at LeadTime.ca.

ATV310HU40N4E vs. Other Altivar 310 Models: Which Power Rating Do You Need?

Model Heavy Duty Power Normal Duty Power Nominal Output Current (HD) Best Fit Application
ATV310HU40N4E 4 kW 5.5 kW 9.5 A Compact pumps, fans, conveyors; retrofit OEM panels
Altivar 310 — 5.5 kW variant 5.5 kW 7.5 kW Higher than 9.5 A Mid-size fans and conveyors with higher torque demand
Altivar 310 — 7.5 kW variant 7.5 kW 11 kW Higher Larger pumps and compressors
Altivar 310 — 11 kW variant 11 kW 15 kW Higher Industrial cooling, heavy conveyor drives
Altivar 310 — 15 kW variant 15 kW 22 kW Higher Large HVAC units, high-inertia loads
Altivar 310 — 22 kW variant 22 kW 30 kW Higher High-power industrial drives at the top of this family

If your motor nameplate shows a rated power above 5.5 kW, the ATV310HU40N4E is not the correct selection regardless of duty cycle — step up to the appropriate higher-rated Altivar 310 variant. Also note: if your application site has significant electrical noise sensitivity or EMC compliance requirements, be aware that the ATV310HU40N4E does not include an integrated EMC filter; an external filter will be required at those sites. Check current variant availability at LeadTime.ca and confirm the correct model before ordering.

Expert Verdict: Is the ATV310HU40N4E the Right Drive for Your Project?

The ATV310HU40N4E earns its place in a controls engineer's specification list when the application is a 3-phase induction motor in a pump, fan, conveyor, or compressor role, the supply is 380–460V 3-phase, and the motor does not exceed 4 kW heavy duty or 5.5 kW normal duty. The four integrated protections — thermal, overcurrent, overvoltage, and undervoltage — reduce external relay logic and simplify the bill of materials in a meaningful way. Sensorless flux vector control and motor slip compensation deliver adequate speed regulation for the majority of industrial process applications without the cost or wiring complexity of encoder feedback. At 1.8 kg with a compact footprint suited to DIN rail or wall mounting, this drive genuinely simplifies retrofit installations where cabinet space is already committed. These are verified, practical advantages that explain why panel builders and automation integrators select this model repeatedly for single-motor OEM and retrofit applications.

Where the ATV310HU40N4E has real limits: it is not a drive for Ethernet-connected factories. Modbus RTU over RS485 serial is the native communication protocol, and no native Ethernet port is available — if your PLC or SCADA communicates only via Ethernet or an industrial Ethernet variant such as PROFINET or EtherNet/IP, a separate protocol gateway adds cost and integration complexity that may make a different product family the cleaner choice. The IP20 protection rating rules it out for outdoor, washdown, or high-humidity environments without a sealed external enclosure with internal cooling. For motors above 5.5 kW, step up to the 7.5 kW, 11 kW, 15 kW, or 22 kW Altivar 310 variants. For single-phase supply sites, a different product family is required entirely. And for applications with severe EMI sensitivity, budget for an external EMC filter since this model does not include one as standard.

From a procurement standpoint, the ATV310HU40N4E is a mature, stable component in a well-established product family, and authorized distribution channels carry it more reliably than general electrical supply houses. The distinction between buying through a specialist automation distributor and a generic channel is not academic: pre-purchase confirmation that your supply voltage, motor rating, and communication protocol all align with this specific model can prevent a return shipment and a commissioning delay that costs far more than any price difference. For current pricing, lead time confirmation, and availability, visit the ATV310HU40N4E product page at LeadTime.ca — we ship to customers worldwide.

For volume pricing, build-of-materials support, or to confirm current lead time before committing to a production schedule, contact the LeadTime.ca team directly — we serve engineers and procurement teams worldwide.

What Engineers Need to Know Before Ordering the ATV310HU40N4E

Community discussion for the specific catalog number ATV310HU40N4E is sparse in public industrial forums and distributor Q&A sections — which in itself is informative. Mature, reliable components in well-defined application niches generate fewer forum threads than troublesome ones, and the Altivar 310 family sits firmly in that category. What does appear in broader Altivar 310 and 4 kW variable speed drive discussions points to a consistent pattern of ordering errors and pre-installation mismatches rather than field reliability concerns. These patterns are precisely what specialist distributor pre-purchase consultation is designed to catch.

The single most reported category of ordering error for drives in this class is duty cycle misreading. The ATV310HU40N4E carries two power ratings in the same catalog number — 4 kW at heavy duty and 5.5 kW at normal duty — and buyers who read only the headline "4 kW" figure sometimes underestimate the drive's capability for continuous smooth-running loads, or conversely, overestimate it for high-torque intermittent loads. The correct interpretation: if your application is a fan or centrifugal pump running continuously with gradual load changes,

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