Siemens SENTRON 5SY4301-5, 3-pole miniature circuit breaker, 400 V AC, characteristic A, 10 kA (EN 60898) / 35 kA (IEC 60947-2) breaking capacity, 3 MW wide.
| 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) | 2.1 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 5SY4301-5: Under UL 1077 it is rated 5 kA.
The breaker is rated 400 V AC for multi-phase operation and 440 V AC for single-phase; DC rating is 60 V (72 V max) with 15 kA breaking capacity.
The sealable option (padlockable toggle) allows positive lockout per LOTO procedure. If the panel is tight on width, note that three poles at 54 mm is the standard footprint — no width surprise.
Engineers need to validate fit (ratings, curve, dimensions) before design-in.
Buyers compare costs for BOM pricing and budget approval.
Sourcing buyers need immediate stock to avoid production delays.
Maintenance techs and brokers need alternative when part is unavailable or obsolete.
Design engineers must ensure the MCB can interrupt fault currents safely.
Techs need to confirm if it can be used in DC circuits (rated at 60V DC).
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