Siemens SENTRON 5SY5225-7KK11 miniature circuit breaker, 2-pole, C-curve, 25 A rated at 35 °C, 10 kA breaking capacity, railway design.
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Application environment | universal current |
| 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 |
At 35 °C ambient it carries a full 25 A rated current; that figure derates in a predictable curve as the panel warms — 23.8 A at 40 °C, 21.2 A at 60 °C — so factor in your enclosure's internal temperature when sizing for continuous load.
Rated breaking capacity sits at 10 kA per EN 60898 for AC faults, and the same 10 kA per EN 60898-2 for DC faults up to 440 V.
Rated breaking capacity is 10 kA per EN 60898 for AC circuits, and also 10 kA per EN 60898-2 for DC circuits up to 440 V.
The C-curve means the magnetic trip operates between 5× and 10× the rated current (125 A to 250 A for this 25 A breaker), which handles moderate motor inrush and transformer energisation without nuisance tripping.
This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time.
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