Siemens SENTRON 5SY4304-5, 3-pole miniature circuit breaker, 4 A rated, Type A trip characteristic, 10 kA (EN 60898-1) / 35 kA (IEC 60947-2) breaking capacity, 54 x 76 x 90 mm, IP20.
| Parameter | Value |
|---|---|
| Brand name | SENTRON |
| Number of poles | 3 |
| Pole configuration | 3P |
| Suitability for operation | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic (curve) | A |
| Breaking capacity per EN 60898 | 10 kA |
| Breaking capacity per IEC 60947-2 | 35 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) | 2.3 W |
| 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 5SY4304-5: Certified to IEC/EN 60898-1 for residential and commercial distribution, and to IEC/EN 60947-2 / UL1077 for industrial control-panel applications — the dual rating means the same part serves both a lighting panel and a machine control cabinet without a separate UL 489 listing.
The 5SY4304-5 has a Type A tripping characteristic — instantaneous trip between 2 and 3 times rated current, designed for semiconductor protection and DC-load circuits where standard B or C curves would cause nuisance tripping.
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