Siemens SENTRON 5SY7663-7CC, miniature circuit breaker, 4-pole (3P+N), C characteristic, 63 A at 35 °C, 20 kA breaking capacity per IEC 60947-2, 4 MW units.
| Parameter | Value |
|---|---|
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Width | 72 mm |
| Height | 90 mm |
| Depth | 76 mm |
The Siemens 5SY7663-7CC is a SENTRON miniature circuit breaker (MCB) in a 4-pole 3P+N configuration, rated 63 A at 35 °C with a C tripping characteristic.
The 63 A rating holds at 35 °C. At 40 °C the breaker must be derated to 59.54 A; at 45 °C to 57.71 A; at 50 °C to 55.82 A; at 55 °C to 53.86 A. Ambient operating range spans -40 °C to 75 °C, with humidity limits of 95% up to 55 °C, 55% up to 70 °C, and 35% at 75 °C.
The breaking capacity is 20 kA per IEC 60947-2, which covers most industrial distribution fault levels.
The 5SY7210-7CC is a lower-current variant (10 A) in the same SENTRON 5SY7 series, same 4-pole 3P+N C-curve form factor. The 5SY7663-7CC at 63 A is physically identical in width (72 mm) and mounting — it drops into the same DIN-rail footprint without rewiring, provided the branch circuit is rated for the higher current.
The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
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