Siemens 5SL6263-7CC SENTRON MCB — 2-Pole, C-Curve, 63 A
At 63 A per pole, this covers feeders up to roughly 14 kW on a 230/400 V three-phase system.
Fit and Panel Integration
Mounting position is any, so vertical or horizontal rail orientation is fine.
Status is Active per Siemens lifecycle data — this is a current-production catalog number, not a phase-out or NRND line.
Breaking capacity of 6 kA at 400 V AC per EN 60898 means this breaker can safely interrupt a fault current up to 6,000 A. If your site's transformer is close and the PSCC exceeds that, step up to the 10 kA variant (e.g., 5SL4363-7). The DC rating tops out at 72 V — not a DC breaker for solar strings or battery banks. Factor this into panel thermal calculations if the board is densely populated.
Installable Supplementary Devices
The breaker accepts supplementary devices (shunt trip, undervoltage release, auxiliary contacts) — the product extension feature is enabled. This allows remote tripping or status feedback without replacing the base breaker.