SENTRON 5SQ2370-2YA63, 3-pole miniature circuit breaker, C-curve, 63 A rated, 3 kA breaking capacity per EN 60898 at 400 V AC, 3 modular width units, IP20.
| Parameter | Value |
|---|---|
| Overvoltage category | 3 |
Three modular width units (each 18 mm) on the DIN rail — 54 mm total.
At 40 °C it derates to 59.85 A; at 50 °C to 56.7 A; at 60 °C to 53.55 A. A 60 A continuous load in a 50 °C cabinet will nuisance-trip this breaker on thermal overload.
3 kA rated breaking capacity per EN 60898 at 400 V AC. That's the standard for final subcircuits in a 400 V distribution board; upstream protection must limit fault current if the available short-circuit current exceeds 3 kA.
Yes — same 3-pole footprint, same 55 mm installation depth, same 3 modular width units, same C-curve. The only difference is the current rating: 63 A vs 0.5 A. As long as the busbar and downstream conductors are sized for 63 A, it's a direct mechanical swap.
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