The Siemens SITAS 4AT3032-8ED40-0FA0 is a 4000 VA (4 kVA) single-phase control transformer with a wide-range multi-tap primary covering 400 V through 600 V, including 575/550/525 V inputs. The dual 2 × 115 V secondary windings can be configured in series for 230 V at 17.4 A or in parallel for 115 V at 34.8 A, providing installation flexibility across different control voltage requirements.

Key Features

• Wide multi-tap primary range (400-600 V) adapts to diverse global mains voltages without transformer replacement
• Dual secondary windings: series for 230 V or parallel for 115 V, doubling the available current in parallel mode
• 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 panel environments
• 50/60 Hz dual-frequency operation for global industrial power compatibility
• IP00 open-type construction for enclosed panel or cabinet mounting

Technical Data

Applications

This transformer is ideal for supplying control circuits in industrial machinery and automation systems operating on diverse mains voltages from 400 V to 600 V. The flexible dual-secondary configuration supports both 230 V and 115 V control standards from a single unit, making it well-suited for export-oriented machine builders and multi-standard production facilities. The low inrush characteristic enables streamlined fuseless panel design with SIRIUS 3RV circuit breakers.