Siemens SENTRON 5SY5203-7KK11, 2-pole miniature circuit breaker, C-curve, 10 kA breaking capacity per EN 60898, for railway applications.
| 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 |
|---|---|
| At AC rated value | 400 V |
| According to EN 60898 rated value | 10 kA |
| With single-phase operation at AC rated value | 440 V |
| Energy Limitation Class | 3 |
Operating temperature range from -40 °C to +75 °C with derated humidity (95% at 55 °C, 55% at 70 °C, 35% at 75 °C) covers both cold-start in unheated depots and hot days near traction converters. IP20 protection (with connected conductors) is standard for enclosed panel mounting; the sealable design allows lockout/tagout compliance.
10 kA per EN 60898 at 400 V AC, 10 kA per EN 60898-2 at DC, and 15 kA per IEC 60947-2 at DC.
It is designed for railway applications — rolling stock electrical panels, trackside cabinets, and traction auxiliary circuits where vibration resistance and wide temperature range are required.
Submit an RFQ through this listing. The part is sourced to order through independent distribution; pricing and stock are confirmed at quote time.
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