The Siemens 5SL6463-7CC is a 4-pole miniature circuit breaker rated 400 V with a 6 kA breaking capacity, C-curve trip characteristic, and 63 A rated current. The 6 kA breaking capacity at 400 V means it can safely interrupt a fault current up to 6,000 A without welding its contacts or cascading damage upstream; for installations with higher prospective fault current (above 6 kA at the panel), you need a current-limiting upstream device or a higher-rated MCB. This is a Basic Devices family part from the 5SL6 series, which is Siemens' standard DIN-rail miniature breaker line for branch-circuit protection. The 4-pole configuration (all four poles switched and protected) suits three-phase + neutral applications — common in European-style distribution boards for lighting, socket outlets, and small motor loads up to 63 A per phase.
RoHS compliance confirmed since 01-06-13. REACH candidate-list information available on request.