Motor-protective circuit-breaker, IEC/EN 60947, VDE 0660, Overload releases 16 - 20 A: max. 310 A, Switch off technique Thermomagnetic, With thermal protection Yes, Phase failure sensitive Yes, Rated permanent current Iu 20 A, Rated operation power at AC-3, 230 V 5.5 kW, Rated operation power at AC-3, 400 V 9 kW, Type of control element Turn button, Number of poles 3: Rated short-circuit breaking capacity lcu at 400 V, AC 50 kA, Device IP20, Terminations IP00, Storage - 40 - 80 °C, Open -25 - +55 °C, Direction of incoming supply as required