The Siemens SITAS 4AU3632-8CC40-0HC0 is an 8000 VA (8 kVA) three-phase control transformer with multi-tap primary spanning Y: 380-500 V and Δ: 220-289 V, including 480/460 V tap points. Its IP23 enclosed housing provides protection against solid objects (>12 mm) and dripping water, enabling standalone wall or frame mounting without requiring a separate protective enclosure. With 39 kVA short-term capacity, it reliably powers 3-phase control circuits in demanding industrial environments.

Key Features

• IP23 enclosed construction protects against solid objects and water spray — suitable for standalone installation outside control cabinets
• Multi-tap primary (Y: 500/440/380 V / Δ: 289/254/220 V) adapts to different 3-phase mains voltages
• 39 kVA short-term capacity handles extreme inrush loads from large contactor banks and motor starters
• Low inrush current design enables fuseless protection when paired with SIRIUS 3RV motor starter protectors
• H-class insulation (55 °C ambient) supports operation in higher-temperature industrial environments
• 50/60 Hz dual-frequency operation for global industrial power compatibility

Technical Data

Applications

This IP23 enclosed transformer is ideal for supplying 3-phase control circuits in industrial machinery, motor control centers, and automation systems where standalone mounting outside a control cabinet is required — machine tools, conveyor systems, packaging lines, and process equipment in indoor industrial environments. The enclosed design eliminates the need for a separate protective cabinet, reducing installation footprint and wiring complexity, while the low inrush characteristic enables streamlined fuseless panel design with SIRIUS 3RV circuit breakers.