Residual current devices

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.

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