The SITAS 4AM5742-5AV00-0EA0 is a 1,000VA single-phase control transformer converting 400V mains to 42V at 23.8A. The 42V secondary meets SELV (Safety Extra-Low Voltage) standards — below the 50VAC threshold where additional protection against electric shock is required.

Electrical Performance

Rated at 1,000VA continuous with a short-time power rating of 5,000VA (S6 duty). The EI 150/90 core achieves approximately 93 percent efficiency. Primary taps at 380/400/420V. Full galvanic isolation via II0 vector group enhances the inherent SELV safety characteristics.

Mechanical Design

Substantial 152x144x132mm IP00 open-frame design with screw terminals and screw mounting. Class B (130 C) insulation. Weighs approximately 15 kg.

Application

Specified for safety-critical control circuits in hazardous locations, wet environments, or where operators have direct contact with control devices. Common in chemical plants, water treatment facilities, and mining operations where SELV compliance is mandatory. Also used for 42V tool power distribution.

Decision Parameters