Siemens SENTRON 5SY4 miniature circuit breaker, ordering number 5SY4125-6. 1-Pole DIN-rail MCB with B tripping characteristic (3–5 × In), rated current 25 A, rated voltage 230/400 V AC, rated short-circuit breaking capacity 10 kA to IEC/EN 60898-1. Thermal-magnetic overcurrent and short-circuit protection for final and sub-distribution circuits. Terminal capacity 0.75–35 mm², tightening torque 2.5–3 Nm, mounting depth 70 mm.
| Manufacturer part number (MPN) | 5SY4125-6 |
| Series | Siemens SENTRON 5SY4 |
| Type | Miniature circuit breaker (MCB), DIN rail (35 mm) |
| Number of poles | 1-Pole |
| Rated current (In) | 25 A |
| Tripping characteristic | B (3–5 × In) |
| Rated voltage (Ue) | 230/400 V AC |
| Rated short-circuit breaking capacity (Icn) | 10 kA |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| Terminal capacity | 0.75–35 mm² |
| Terminal tightening torque | 2.5–3 Nm |
| Mounting depth | 70 mm |
| EAN / GTIN | 4001869181233 |
| HS code | 8536.20 |
| Sales unit | pcs |
| Package quantity | 12 pcs |
| Primary standard | Siemens SENTRON 5SY4 |
| MOQ | 1 |