Siemens SENTRON 5SY7304-7 miniature circuit breaker, 3-pole, 4 A rated current, C tripping characteristic, 15 kA breaking capacity per EN 60898, 40 kA per IEC 60947-2.
| Parameter | Value |
|---|---|
| Brand name | SENTRON |
| Number of poles | 3 |
| Pole configuration | 3P |
| Suitability for operation | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic (curve) | C |
| Breaking capacity per EN 60898 | 15 kA |
| Breaking capacity per IEC 60947-2 | 40 kA |
| Overvoltage category | III |
| IP protection class | IP20, with connected conductors |
| Energy limitation class | 3 |
| Pollution degree | 3 |
| Parameter | Value |
|---|---|
| Rated current (AC) | 4 A |
| Rated voltage (AC, multi-phase) | 440 V |
| Parameter | Value |
|---|---|
| Modular width units | 3 |
| Mounting position | any |
| Width | 54 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Terminal tightening torque, max. | 75 °C |
| Terminal tightening torque, min. | -40 °C |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Fastening method | Quick assembly system |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| Halogen-free | Yes |
| Silicone-free | Yes |
| Influence of surrounding temperature | max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C |
The 3-pole design suits three-phase loads — lighting, small motor circuits, or control transformers — in a panel that needs one compact device per branch. Any mounting position works, and the installation depth is 70 mm.
The 4 A rating holds at 35 °C ambient. At 40 °C it derates to 3.81 A, at 50 °C to 3.61 A, and at 60 °C to 3.39 A. If your panel runs warm — common in a crowded enclosure — size the load against the derated figure, not the 35 °C nameplate.
15 kA per EN 60898-1 and 40 kA per IEC 60947-2. The 40 kA figure is the one to use for industrial panel SCCR calculations.
The MCB carries IEC/EN 60898-1 and IEC/EN 60947-2 certifications plus UL1077. Halogen-free and silicon-free construction is confirmed. Standard RoHS/REACH declarations are available from Siemens documentation.
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
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