Siemens SENTRON miniature circuit breaker, 5SY4208-7KK11, 2-pole, C characteristic, 8 A rated, 10 kA (EN 60898) / 20 kA (IEC 60947-2) breaking capacity, 2 MW units, IP20.
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Application environment | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Number of poles | 2 |
| Parameter | Value |
|---|---|
| Tripping characteristic class | C |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Modular width units | 2 |
| Width | 36 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Mounting position | any |
| Min. | -40 °C |
| Max. | 75 °C |
| Protection degree (IP) | IP20, with connected conductors |
| Parameter | Value |
|---|---|
| Pollution degree | 3 |
| Parameter | Value |
|---|---|
| Energy Limitation Class | 3 |
The 8 A rating holds only up to 35 °C ambient. Above that, the bimetal strip heats faster and the breaker must derate to avoid nuisance tripping: 7.51 A at 40 °C, 7.26 A at 45 °C, 6.99 A at 50 °C, 6.72 A at 55 °C, and 6.43 A at 60 °C. If your panel internal temperature runs 50 °C, size the load at 7 A max, not 8 A.
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