Siemens SENTRON 5SY4440-7, 4-pole miniature circuit breaker, C-curve, 40A, 10kA per EN 60898.
| Parameter | Value |
|---|---|
| Brand name | SENTRON |
| Application suitability | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Pole configuration | 4P |
| Rated voltage, AC (multi-phase) | 440 V |
| Parameter | Value |
|---|---|
| Tripping characteristic (trip curve) | C |
| Energy limitation class | 3 |
| Overvoltage category | III |
| Pollution degree | 3 |
| Degree of protection (IP) | IP20, with connected conductors |
| Parameter | Value |
|---|---|
| Width in modular units | 4 |
| Width | 72 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Fastening / mounting method | Quick assembly system |
| Mounting position | any |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Tightening torque, max. | 75 °C |
| Tightening torque, min. | -40 °C |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| Halogen-free | Yes |
| Silicone-free | Yes |
| Influence of ambient temperature (derating) | max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C |
| Parameter | Value |
|---|---|
| Power loss per pole, AC (hot state, at In) | 3.5 W |
The 5SY4440-7: Dimensions are 72 mm wide (4 modular width units) × 76 mm deep, so it fits the same DIN footprint as other SENTRON 4‑pole MCBs. IP20 with connected conductors, overvoltage category III, pollution degree 3.
Humidity limits are also specified: max 95 % RH up to 55 °C, derating further at higher temperature. Keep that in mind for washdown areas or outdoor enclosures.
Depth is 76 mm and width is 72 mm (4 modular width units).
It complies with IEC / EN 60898‑1, IEC / EN 60947‑2, and UL1077.
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