Hall-effect thruster ST40 is designed for use as part of the propulsion system for satellites mass up to 1T. It is aimed at solving the tasks of orientation and stabilization of the spacecraft in different orbits. The propulsion system with ST40 thruster(s) provides a thrust up to 28 mN (one thruster) and up to 55 mN (two thrusters) at a maximum electric power consumption up to 600 W (one thruster) and up to 1100 W (two thrusters). Each thruster in the propulsion system is equipped by two heatless hollow cathodes.