Siemens SENTRON 5SY4202-8, 2-pole miniature circuit breaker, D tripping characteristic, 10 kA / 35 kA breaking capacity, 400 V AC / 60 V DC, 36 mm width.
| 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 |
Halogen-free and silicon-free construction, with sealable terminals and combined top/bottom terminals for feed-through wiring — a detail that matters when the breaker is used as a main isolator in a sub-distribution board.
It remains an active catalog item with no announced phase-out.
Under UL 1077 it is rated 5 kA at AC.
The D curve (5SY4202-8) trips magnetically at 10–20× rated current, designed for high-inrush loads like motors and transformers. B curve trips at 3–5× (lighting, resistive), C at 5–10× (general-purpose inductive).
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