Siemens SENTRON 5SY8304-7, 3-pole miniature circuit breaker, C tripping characteristic, 50 kA interrupting capacity at 400 V AC per IEC 60947-2, IP20 with conductors, 3 MW units.
| 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 IEC 60947-2 | 50 kA |
| Overvoltage category | III |
| IP protection class | IP20, with connected conductors |
| Pollution degree | 3 |
| Parameter | Value |
|---|---|
| Rated voltage (AC, multi-phase) | 440 V |
| Voltage type (AC/DC) | AC |
| Supply frequency range | 50/60 Hz |
| Power loss per pole at rated current (AC, hot) | 1.3 W |
| Mechanical service life (operating cycles, typ.) | 10 000 |
| Neutral conductor switching | No |
| Rated voltage (AC, single-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 |
| Accepts supplementary devices | 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 |
| Vibration resistance (IEC 60068-2-6) | ±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz |
The 15 kA DC rating at 60 V (max 72 V) covers DC bus or battery-backed loads, though the AC rating is the headline figure for most panel builds.
Rated and marked per IEC / EN 60947-2 and UL1077, covering both international and North American installations. Halogen-free and silicon-free construction. Vibration resistance per IEC 60068-2-6 (±1 mm at 5–25 Hz; 50 m/s² at 25–150 Hz). Mechanical service life typical 10 000 operating cycles.
This part is available to order through independent distribution. Submit an RFQ for current pricing and availability; confirmation is provided at quote time.
50 kA at 400 V AC per IEC 60947-2, and 15 kA at 60 V DC per the same standard. Under UL 1077 the rating is 5 kA.
The MCB carries IEC / EN 60947-2 and UL1077 certifications. It is halogen-free and silicon-free.
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