The SITAS 4AM4642-4TJ10-0FA0 is a 400VA single-phase control transformer converting 230V mains to 110V at 3.64A for industrial control circuits. Part of the 4AM4642 series, it steps up from the 315VA platform with a larger EI 120/52 core and higher 91 percent efficiency.

Electrical Performance

Rated at 400VA continuous with a short-time power rating of 1,440VA (S6 duty) — 3.6x headroom for high-inrush loads from contactors, relays, and solenoid valves. The EI 120/52 laminated core achieves approximately 91 percent efficiency. Primary taps at 218/230/242V (plus or minus 5 percent) accommodate voltage fluctuations. Full galvanic isolation via II0 vector group.

Mechanical Design

Compact 122x121x114mm IP00 open-frame design for enclosure mounting. Screw terminals on a screw-mount chassis. Class B (130 C) insulation system per IEC 60085, rated for 40 C ambient. Weighs approximately 5.5 kg.

Application

Typical applications include industrial control panels, machine tool automation, and conveyor systems where 110V control circuits are standard. The 230V primary suits European and Asian mains networks.

Decision Parameters