The SITAS 4AM5542-8DD40-0FA0 is an 800VA single-phase control transformer with a mid-high range multi-tap primary (525/500/480V) stepping down to 230V at 3.48A. It covers the 480-525V distribution voltage range common in North American and marine installations.

Electrical Performance

Rated at 800VA continuous with a short-time power rating of 3,400VA (S6 duty) — over 4x the continuous rating for high-inrush control loads. The EI 150/65 core achieves approximately 93 percent efficiency. Full galvanic isolation via II0 vector group.

Mechanical Design

Dimensions of 152x144x126mm in IP00 open-frame design with screw terminals and screw mounting. Class B (130 C) insulation, rated for 40 C ambient. Weighs approximately 13.2 kg.

Application

Suited for industrial control panels on 480V (North America) or 500V (marine/offshore) distribution networks, where 230V control circuits require reliable power with high short-time capacity for motor starter and contactor combinations.

Decision Parameters