The Siemens SITAS 4AM3842-4TN00-0EA1 is a 160VA safety isolating transformer for machine builder OEM control panels, delivering 24V AC SELV from a 230V AC mains supply. This variant shares the same core electrical specifications as the 4TN00-0EA0 — 160VA continuous, 490VA S6 short-time, 6.67A secondary current — and serves as a direct interchangeable option for panel builders standardizing on Siemens SITAS transformers across their machine platforms.

24V SELV Control Power for OEM Panels

The transformer provides galvanically isolated 24V AC at 6.67A for powering contactor coils, safety relays, PLC power supplies, and HMI backlight circuits in machine control panels. EN 61558-2-6 safety isolating certification ensures the secondary circuit meets SELV requirements, allowing direct connection to operator-accessible control devices without additional protection.

Consistent Integration Across Production Batches

Standardizing on the 4TN00-0EA1 ensures identical mounting footprint (98×106×104mm, EI 96/44 core), screw/DIN rail installation, and electrical performance across every panel built. The 490VA S6 rating provides overhead for contactor inrush without oversizing the continuous VA rating, keeping panel dimensions and cost in check.