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 |
|---|---|
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Width | 54 mm |
| Height | 90 mm |
| Depth | 76 mm |
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.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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