The Siemens SITAS 4AM4042-8DD40 solves a universal panel-building problem: one transformer, any mains voltage. With 11 selectable primary taps spanning 550 V to 208 V AC, a single part number covers machine builds destined for different regions and supply voltages. The dual 2×115 V secondary can be series-connected for 230 V control circuits or parallel-connected for 115 V at 2.18 A — giving panel designers maximum flexibility without stocking multiple transformer variants. The 250 VA continuous rating with 850 VA short-time peak handles demanding control loads with ease.

Key Features

• 11 primary voltage taps from 550 V down to 208 V — one part, global coverage
• Dual 2×115 V secondary — series for 230 V or parallel for 115 V at double current
• 850 VA short-time (S6) rating for high-inrush electromagnetic loads
• 89% efficiency, 50/60 Hz operation
• IP00 open-frame for panel integration; screws or DIN rail mounting
• UL/CSA recognized for export machine compliance

Technical Data

Applications

Ideal for OEM machine builders exporting to multiple regions: packaging machines, printing presses, CNC auxiliary panels, and conveyor systems. The multi-tap primary eliminates re-engineering for different destination voltages. The dual secondary provides native 115 V for North American control circuits or 230 V for IEC markets from the same transformer.