The Siemens 5SU1356-6KV16 is a combined residual-current device and miniature circuit breaker — an RCBO, or FI/LS-protector in Siemens terminology — in a single 1+N-pole module. It carries Type A residual-current sensitivity (IΔN 30 mA) and a B-curve overcurrent trip at 16 A, with a rated short-circuit capacity of 6 kA. The 70 mm depth fits standard Siemens distribution boards and consumer units, and the Type A detection handles pulsating DC fault currents from modern electronics and variable-speed drives.
Snap-on mounting to DIN rail EN 60715. The 1+N-pole format occupies a single module width in the distribution board. Rated for 50/60 Hz networks up to 230/400 V AC. The 30 mA residual sensitivity provides additional protection against electric shock in final circuits — common for socket-outlet, lighting, and small-appliance circuits in residential and commercial panels.