Schneider Electric ATH230U11N4 Altivar HVAC ATH230 1.1 kW 380-500 V 3-Phase IP20 Variable Frequency Drive

The Schneider Electric ATH230U11N4 is a 3-phase Altivar HVAC ATH230 variable speed drive for HVAC OEM panels, rated for 1.1 kW motors at 380-500 V. It mounts in IP20 enclosures, integrates Safe Torque Off (STO) safety rated SIL 3 / PL e, and communicates over Modbus serial and BACnet MS/TP for direct building management system integration.

Technical Specifications

Certifications & Standards

• cULus
• CE
• UKCA
• KC
• EAC
• ATEX
• RCM
• IEC 61800-5-1
• IEC 61800-3
• UL 508C
• IEC 60721-3
• IEC 61508
• IEC 13849-1

Selection Notes

Size the ATH230U11N4 to the driven motor's nameplate current, not the drive's frame rating: its 3.0 A nominal output current at 380-500 V sets the ceiling for the connected pump, fan, or compressor motor. Within the ATH230 line, the 380-500 V 3-phase variant applies where the panel's incoming supply is 3-phase at that voltage band — pick the opposite phase/voltage sibling if the OEM panel's incoming feed differs. The integrated STO input lets the drive sit inside a safety circuit (SIL 3 / PL e) without an external contactor to remove torque, and the native Modbus and BACnet MS/TP ports let a building automation system read status and write speed setpoints directly, without a protocol gateway.