The Siemens 3RK1300-0AS10-0AA1 is an EM 300 EDS electronic direct starter, part of the SIRIUS family designed for the ET 200 X distributed I/O system. It is a solid-state motor starter with integrated motor protection, meaning it combines the starting and overload protection functions into a single device without electromechanical contactors or separate thermal relays. The setting range is 0.6 to 2.18 A, covering motors rated 0.18 to 0.8 kW at 400 V AC-3 duty. Rated for an operating voltage of 400 to 500 V, this unit is built for three-phase motor control in industrial environments. Communication is handled via PROFIBUS DP, allowing the starter to be integrated into a higher-level automation network for remote start/stop, fault readback, and parameter adjustment. The unit also includes a motor brake output rated DC 24 V, 3 A, which is useful for holding brakes on vertical-axis drives or conveyors that need to lock when power is removed.
The enclosure measures 134 mm deep by 140 mm wide by 270 mm high. The minimum disconnection time is 1 second, which is the shortest interval the solid-state switching can guarantee before re-start. Short-circuit protection is provided by fuses external to the unit; the maximum breaking capacity at 400 V is 100 A. The solid-state switching contact design means there are no moving contacts to wear out, but the unit must be fused per the manufacturer's specification to protect the internal semiconductors. The ambient operating temperature range is 0 to 55 °C.