The 4AM3442-8DN00 is a 100VA multi-tap single-phase control transformer from the Siemens SITAS 4AM series, delivering a fixed 24VAC at 4.17A from any of 11 selectable primary voltage taps between 208V and 550V. It combines control, safety isolating, and line transformer functions with global-input flexibility and a fixed low-voltage output.

Global Input, Standard Output

While the primary side adapts to any supply from North American 208V to European 400V to Asian 500V networks via 11 discrete taps, the secondary stays at the universal 24V standard for control circuits. This is the practical choice for OEMs exporting 24V-controlled machinery worldwide — one transformer, one panel design, any destination voltage. The 310VA S6 short-time rating handles contactor inrush without voltage sag, critical for 24VDC power supply input stability.

Construction

The EI 84/42 laminated core with Class B insulation delivers 86% efficiency at 40°C ambient. IP00 open-style, mounts via screws or 35mm DIN rail (EN 60715). Screw-type terminals accept ring or fork lugs. Certified to EN 61558-2-2 and EN 61558-2-6 with CE, cRUus, and EAC approvals for global compliance.

Key Decision Parameters