Siemens 3RT1055-6AP36 Three Phase Industrial Contactor

Siemens 3RT1055-6AP36 is a SIRIUS three-pole power contactor designed for AC-3e/AC-3 motor control, rated for 150 A in the main circuit and 75 kW at 400 V AC (50–60 Hz). It provides 3 main contacts plus auxiliary contacts 2 normally open and 2 normally closed, with screw-terminal connections for the auxiliary and main circuits and busbar-ready main circuit options for tight panel layouts. The coil operates at 220–240 V (DC) and the unit is sized as S6, making it well suited for heavy-load switching in industrial applications such as conveyors, pumps, fans, and presses where reliable on/off control of motors is required.