Lifecycle and sourcing
For a BOM line or a critical-spare cabinet, the 5SY4608-8CC11 is quoted to order against an RFQ; availability and current pricing are confirmed at quote time.
What the ratings mean for fit
The 10 kA breaking capacity at 400 V means this MCB safely interrupts fault currents up to that level without upstream device cascade — sufficient for most secondary distribution panels in rail infrastructure where the prospective short-circuit current stays under that threshold. The 3+N-pole configuration (three protected phases plus switched neutral) matches 3-phase 4-wire systems typical in rail power supplies; the neutral pole is not internally protected but provides isolation. The 8 A D-curve rating is sized for smaller auxiliary loads — lighting circuits, control transformers, signalling power supplies — not for motor feeders or main incomers.