Series 5ST3 7 Bus-Bar System With pin connections Cut-to-length bar For 1 or 3-phase line protective switches of the series 5SJ6 and 5SY No additional connection terminal required for stranded connection up to 35mm² Excellent accessibility for feeder cable 50→90A load at infeed single-sided/in-centre for 10mm²; 65→120A for 16mm² Pin type connection Material: Cu (10mm²); 16mm² fully insulated Lug spacing: 18mm Standards DIN 57606, DIN 57659 Standards DIN 57606, DIN 57659 Siemens Distribution Boards & Accessories Type B characteristic offers instantaneous short circuit response level of 3-5 x normal rated current, making it suitable for circuits with moderate inrush currents such as filament lamps, heating loads and most domestic/small building protection applications.,Type C characteristic offers short circuit response of 5-10 x normal rated current, making it ideal for circuits with higher inrush currents such as motor control and fluorescent lighting installations in industrial buildings where nuisance tripping might occur if a faster type was used.