The Siemens SITAS 4AM4842-5AT10-0FA1 is a 500 VA single-phase control transformer that steps down 400 V primary to 230 V secondary for industrial control circuits. Cage-clamp terminals enable fast, tool-free wiring — reducing panel assembly time. With 2.17 A continuous output and 2000 VA short-term capacity, it reliably powers contactor coils, relays, timers, and PLC power supplies in automation panels and machine control systems.

Key Features

• Cage-clamp terminals enable fast, tool-free wiring — reducing panel assembly time
• Adjustable primary voltage taps at 380/400/420 V (±5%) compensate for supply voltage variations
• 2000 VA short-term capacity (4× nominal) handles high inrush from contactor coils and relay banks
• Low inrush current design simplifies primary-side protection coordination
• Compact EI 120/72 core: 122 × 121 × 134 mm footprint
• 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 designed for supplying control circuits in industrial machinery, control panels, HVAC systems, and building automation where a 500 VA single-phase supply is required. The cage-clamp terminals reduce wiring time during panel assembly, while the compact EI 120/72 footprint fits standard control panel layouts. The ±5% adjustable primary taps provide adaptability for installations with fluctuating mains voltage, and the 2000 VA S6 rating handles inrush currents from contactor and relay loads.