The SITAS 4AM5742-5LT10-0FA0 is a 1,000VA single-phase control transformer stepping 660V down to 230V at 4.35A. Designed specifically for 660V distribution networks found in mining, tunneling, and heavy industrial installations.

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 627/660/693V (plus or minus 5 percent) accommodate voltage variation on 660V networks. Full galvanic isolation via II0 vector group.

Mechanical Design

Substantial 152x144x132mm IP00 open-frame design with screw terminals and screw mounting. Class B (130 C) insulation, rated for 40 C ambient. Weighs approximately 15 kg.

Application

Essential for mining conveyors, crushers, ventilation systems, and tunnel boring machines where 660V is the standard distribution voltage. The 230V secondary powers control and monitoring circuits in these harsh, safety-critical environments.

Decision Parameters