Schneider Electric ATV320U40N4C Altivar 320 Variable Speed Drive 4kW

Overview

The Schneider Electric ATV320U40N4C is a mid-power Altivar Machine variable speed drive rated for 4kW motor loads on a 380–500V three-phase supply, engineered by Schneider Electric for OEM machine builders who need reliable motor control embedded directly inside compact equipment enclosures. In the part-number scheme, “U40” identifies the 4kW power rating, “N4” the 380–500V three-phase input class, and the closing “C” the compact housing with cage-clamp spring terminals used across smaller Altivar Machine frame sizes. This mid-range model regularly appears on process pumps, extraction fans, and medium-duty conveyor drives where more torque headroom than the smallest ATV320 variants is required.

With engineering support in Muscat, Seven Star LLC supplies the Schneider Electric ATV320U40N4C variable speed drive to industrial clients throughout the Sultanate of Oman, Muscat, and the wider GCC region. Our engineers assist machine builders, EPC contractors, and plant maintenance teams with drive sizing, motor compatibility verification, and technical support so that every ATV320U40N4C is correctly specified before ordering.

Operating Principle

The Schneider Electric ATV320U40N4C works as a pulse-width-modulated (PWM) variable frequency drive: an internal rectifier converts the fixed 380–500V three-phase input into DC across the bus capacitors, and an IGBT inverter stage then switches that DC bus at up to 4 kHz to reconstruct a variable-voltage, variable-frequency AC output. Output frequency is adjustable from 0.1 to 599 Hz, allowing precise, stepless control of connected motor speed and torque across the full operating range.

By ramping motor speed electronically instead of relying on throttling valves, dampers, or mechanical gearing, the ATV320U40N4C allows three-phase asynchronous and synchronous motors up to 4kW to accelerate smoothly from standstill, eliminating the inrush current and mechanical shock associated with direct-on-line starting. This translates into lower peak electrical demand charges, reduced wear on couplings, belts, and bearings, and tighter process control for medium-duty pumping, fan, and conveyor applications.

Engineering Design of the Schneider Electric ATV320U40N4C

The Schneider Electric ATV320U40N4C is housed in Schneider’s compact ATV320 book-format enclosure, measuring approximately 140mm wide by 184mm high by 158mm deep and weighing 2.2kg — a step up in frame size from the smallest ATV320 models to accommodate the higher continuous output current, while remaining narrow enough to bank side by side inside an OEM control panel. The “C” variant’s cage-clamp spring terminals speed up panel wiring on repeat machine builds compared with torque-critical screw terminals.

Connectivity is provided through an onboard RJ45 port supporting Modbus and CANopen protocols as standard, so the drive integrates into a machine’s PLC or SCADA network without a dedicated fieldbus card in most installations. A Class C2 EMC filter is integrated to simplify electromagnetic compatibility compliance, and the drive is rated IP20 to EN/IEC 61800-5-1 for standard enclosed panel mounting, with an ambient operating range of -10°C to 50°C without derating (extending to 60°C with output current derating).

Key Features

Panel builders and OEMs specifying the Schneider Electric ATV320U40N4C in Oman gain a mid-power drive that balances compact packaging with the torque headroom of the larger ATV320 frame. Core capabilities include:

• 4kW rated output power for three-phase asynchronous and synchronous motors on 380–500V supplies.
• Nominal continuous output current of 9.5A at 4 kHz switching frequency.
• Compact book-format enclosure at 2.2kg, dimensioned 140 x 184 x 158mm for panel banking.
• Cage-clamp spring terminals on the “C” variant for rapid, tool-light panel wiring.
• Built-in RJ45 Modbus and CANopen connectivity for PLC and SCADA integration.
• Integrated Class C2 EMC filter for streamlined regulatory compliance.
• IP20-rated enclosure to EN/IEC 61800-5-1 suited to standard control cabinets.
• Transient overtorque capability of 170–200% of nominal motor torque for demanding starts.

Industrial Applications

The added torque and current headroom of the Schneider Electric ATV320U40N4C suit medium-duty process pumps, cooling tower and extraction fans, and conveyor sections on packaging, water treatment, and light manufacturing lines across Oman’s expanding industrial sector. EPC contractors and OEM panel builders delivering pumping stations, desalination pretreatment skids, and district cooling auxiliary equipment to projects in Muscat and across the Sultanate frequently select the ATV320U40N4C where the smallest Altivar Machine models lack sufficient current rating.

Facilities management contractors, food and beverage processing plants, and industrial parks throughout the Sohar and Salalah economic zones similarly depend on this Altivar Machine power class for reliable fan, pump, and conveyor speed control. Backed by manufacturer datasheet documentation, Seven Star LLC distributes the ATV320U40N4C to system integrators and OEM panel builders who require genuine hardware, accurate lead times, and technical enquiry support for both new machine builds and drive replacement programs.

Technical Specifications

Full technical parameters for the Schneider Electric ATV320U40N4C Altivar Machine variable speed drive are listed below; teams sourcing the Schneider Electric ATV320U40N4C for a new build or spares order should confirm firmware revision against these values:

Request a Quote for Schneider Electric ATV320U40N4C

To submit a formal Request for Quote (RFQ), check current availability and lead time, or download the complete technical datasheet for the Schneider Electric ATV320U40N4C Altivar Machine variable speed drive, please contact the instrumentation and automation division at Seven Star LLC today. Working closely with plant engineers in the region, our engineers are ready to assist with rapid commercial sourcing, drive sizing, and OEM panel integration support.

Browse the full Schneider Electric range or see more AC Drives products supplied by Seven Star LLC in Oman and the GCC.