What the ratings mean for your panel
The 5SL4663-7CC: The C-curve (63 A) means the magnetic trip threshold is 5–10× rated current — standard for motor and lighting circuits with moderate inrush. The 10 kA breaking capacity at 400 V is the maximum fault current it can safely interrupt; verify the prospective short-circuit current at the installation point stays under that. The 3+N-pole configuration switches all three phases and switches the neutral, which is required for TN-S or TT systems where the neutral must be disconnected.
Compliance and documentation
RoHS compliant since 01-06-13, with a REACH Article 33 notification for lead (CAS 7439-92-1) above 0.1% w/w. Export control is AL:N / ECCN:N, so no special licensing for cross-border shipment. The product class is B — return restricted, meaning the distributor channel handles warranty and returns directly with Siemens.