| Circuit breaker Universal current 440 V DC/400 V AC 10kA, 2-pole, B, 40 A for railway applications |
| Model |
| Product brand name | SENTRON |
| Product designation | Miniature circuit breaker |
| Design of the product | For railway applications |
| General technical data |
| Number of poles | 2 |
| Number of poles / Note | 2P |
| Tripping characteristic class | B |
| circuit-breaker / Design | 5SY5 |
| Mechanical service life (switching cycles) / typical | 10 000 |
| Overvoltage category | III |
| Voltage |
| Type of voltage | AC/DC |
| Insulation voltage | |
| at DC / rated value | 250 V |
| with multi-phase operation / at AC / rated value | 440 V |
| Supply voltage |
| Supply voltage | |
| at AC / rated value | 400 V |
| Supply voltage frequency | |
| rated value | 50/60 Hz |
| Protection class |
| Protection class IP | IP20, with connected conductors |
| Energy limiting class | 3 |
| Switching capacity |
| Switching capacity current | |
| at DC / acc. to IEC 60947-2 / rated value | 15 kA |
| acc. to EN 60898 / rated value | 10 kA |
| Dissipation |
| Power loss [W] / for rated value of the current / at AC / in hot operating state / per pole | 3.6 W |
| Electricity |
| Current / at AC / rated value | 40 A |
| Suitability for operation | universal current |
| Product details |
| Product feature / Touch protection | Yes |
| Product component | |
| combined terminal top | Yes |
| combined terminal bottom | Yes |
| Product feature | |
| Properties for main switches in accordance with EN 60204-1 | Yes |
| halogen-free | Yes |
| sealable | Yes |
| silicon-free | Yes |
| Product extension / can be installed / supplementary devices | Yes |
| Product function |
| Product function / neutral conductor switching | No |
| Short circuit |
| Breaking capacity short-circuit current (Icn) | |
| at DC / acc. to EN 60898-2 | 10 kA |
| Number |
| Number of test cycles / for environmental testing / acc. to IEC 60068-2-30 | 6 |
| Connections |
| Connectable conductor cross-section / stranded | |
| minimum | 0.75 mm² |
| maximum | 35 mm² |
| Connectable conductor cross-section | |
| solid | |
| — minimum | 0.75 mm² |
| — maximum | 35 mm² |
| finely stranded / with core end processing | |
| — minimum | 0.75 mm² |
| — maximum | 25 mm² |
| AWG number / as coded connectable conductor cross section | |
| minimum | 14 |
| maximum | 4 |
| Tightening torque [lbf·in] / with screw-type terminals | |
| minimum | 22 lbf·in |
| maximum | 26 lbf·in |
| Tightening torque / with screw-type terminals | |
| minimum | 2.5 N·m |
| maximum | 3 N·m |
| Position / of power supply cord | AC as required, observe DC polarity |
| Mechanical Design |
| Height | 90 mm |
| Width | 36 mm |
| Depth | 76 mm |
| Mounting position | any |
| Installation depth | 70 mm |
| Number of width units | 2 |
| Mounting type | Quick assembly system |
| Net weight | 327 g |
| Environmental conditions |
| Degree of pollution | 3 |
| Influence of the surrounding temperature | Max. 95% humidity |
| Vibration resistance / acc. to IEC 60068-2-6 | 50m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec) |
| Ambient temperature | |
| minimum | -40 °C |
| maximum | 70 °C |
| during storage / minimum | -40 °C |
| during storage / maximum | 75 °C |
