Siemens SENTRON 5SY4225-8FA, miniature circuit breaker, 2-pole, 25 A, D characteristic, 10 kA per EN 60898 at 400 V AC, 2 MW units, IP20 with conductors.
| 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 | D |
| 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 |
|---|---|
| At AC rated value | 400 V |
| According to EN 60898 rated value | 10 kA |
| With single-phase operation at AC rated value | 440 V |
The 5SY4225-8FA: The D tripping characteristic (per EN 60898) means the magnetic trip operates at 10 to 20 times rated current — 250 to 500 A for this 25 A breaker. That suits loads with high inrush, like motor starters, transformers, or discharge lighting. For DC circuits, the maximum operating voltage is 72 V.
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