A TeSys U standard power base is a 3-pole starter controller suitable for 3-phase motor applications up to 15kW@400V. It features a modular design allowing it to be expanded with additional modules to form an "all-in-one" starter controller with basic or advanced protection and control functions. The base includes a power contact, control coil, rotary handle, control terminal block, and blanking shutters, providing a high breaking capacity of 50kA@400V and guaranteed start-stop control for up to 3600 cycles per hour, while being compact (45mm width) and suitable for DIN-rail mounting.