What this MCB carries
The Siemens 5SL4640-7CC is a 3+N-pole miniature circuit breaker rated 40 A with a C-trip curve, breaking 10 kA at 400 V. The C-curve means it trips between 5 and 10 times rated current — standard for general-purpose loads like lighting, small motor circuits, and distribution subfeeds where moderate inrush is expected. The 10 kA breaking capacity at 400 V is the fault current it can safely interrupt without welding contacts or cascading upstream; sized for most commercial and light industrial panelboards where the prospective short-circuit current stays under that threshold.
Compliance documentation
RoHS compliant since 01 June 2013. REACH candidate-list information is available on request. Export control is AL: N / ECCN: N — no special licensing required for cross-border movement. These declarations cover the standard regulatory documentation an integrator or quality-control team needs for panel certification.