".-Number of poles; Two-pole -Tripping time; Non-delayed -AmperageRating; 63 A -Voltage rating;230 V AC -Rated operational-voltage (Ue) - max; 230 V -Rated insulation voltage (Ui); 440 V -Rated-impulse withstand voltage (Uimp); 4 kV -Impulse withstand current; Partly surge-proof, 250 A -Frequency rating; 50 Hz