Schneider Electric ATV630U40N4 Altivar Process ATV630 4 kW 380-480 V 3-Phase IP21 Variable Frequency Drive

The Schneider Electric ATV630U40N4 is a 3-phase Altivar Process ATV630 variable frequency drive rated for 4 kW motors at 380-480 V AC, with a continuous output current of 9.3 A. It integrates Safe Torque Off (STO) SIL 3 safety, native Ethernet, Modbus TCP and Modbus serial ports, and ships in an IP21 / UL Type 1 enclosure for wall mounting. Normal duty allows overload to 120% of In; heavy duty extends to 150% for harder-starting loads.

Technical Specifications

Certifications & Standards

• CE
• UL
• CSA
• IEC 61800-5-1

Selection Notes

The ATV630U40N4 covers motors up to 4 kW at 400 V in normal duty (120% overload for 60 s); where starts are longer or more frequent, size to the 3 kW heavy-duty rating (150% overload for 60 s) instead of the higher normal-duty figure. Its 9.3 A continuous output is the number to match against the motor's nameplate current, not the kW label, since actual full-load current varies with motor efficiency. The integrated STO input removes torque directly at the drive without an external contactor, which simplifies wiring a safety circuit around the motor. Native Ethernet and Modbus TCP let a PLC or SCADA system read drive status and write speed references without a separate gateway; step up to a higher-power ATV630 model if the application's motor exceeds this frame's rating.

Applications

The ATV630 targets fluid-handling and process loads: pumps, fans and compressors in water and wastewater treatment, oil and gas, mining and minerals, and food and beverage processing. The Stop-and-Go standby function cuts energy use on intermittent pump and fan duty without extra hardware.