Siemens SENTRON 5SY4263-7KK11, 2-pole miniature circuit breaker, C-curve, 63 A at 35 °C, breaking capacity 10 kA (EN 60898) / 15 kA (IEC 60947-2), IP20, for railway applications.
| 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 |
It carries a C-curve trip characteristic, meaning it handles moderate inrush currents — typical for motor and transformer loads — before tripping magnetically. The 63 A rating at 35 °C is the headline number, but the real-world capacity drops as ambient temperature rises: 59.16 A at 40 °C, 57.14 A at 45 °C, 55.06 A at 50 °C, 52.92 A at 55 °C, and 50.65 A at 60 °C.
Mounting position is any orientation; the breaker works upright, sideways, or inverted.
This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for a firm price and availability confirmation at quote time.
The overall depth is 76 mm, with an installation depth of 70 mm — the difference accounts for the front projection of the toggle and terminal covers.
The breaker is designed to EN 60898 and IEC 60947-2, carries overvoltage category III and pollution degree 3, and is rated for railway applications. It is halogen-free and silicon-free. For specific RoHS/REACH/UL declarations, the manufacturer provides compliance documentation on request.
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