The Siemens 5SJ6163-7RC is a 1-pole miniature circuit breaker from the SENTRON Retail line, rated 63 A with a C tripping characteristic and a 6 kA breaking capacity. The 6 kA breaking capacity at 230/400 V AC is sized for final sub-distribution in residential and light commercial panels where the prospective short-circuit current stays under that threshold.
The 1-pole width occupies a single modular space (approx. 18 mm). Terminal capacity accepts up to 25 mm² conductor for the load side; the busbar slot on the line side accepts standard SENTRON pin or fork busbars for daisy-chaining multiple poles. The toggle handle position indicates tripped state (center) versus ON/OFF, which speeds fault-finding during commissioning.