| Switch disconnector in new design Iu=250 A, Ue = 690 V, 3-pole basic version without 8UC6 handle and shaft |
| Model |
| Product brand name | SENTRON |
| Product designation | Switch Disconnector 3KA |
| Design type | For mounting and installation |
| Design of the operating mechanism | manual operating mechanism |
| Design of the load switch / Strip form | No |
| Type of the driving mechanism / motor drive | No |
| Type of device | fixed mounting |
| Protection against electrical shock | finger-safe |
| Type of voltage | AC/DC |
| Insulation voltage / rated value | 1 000 V |
| Protection class |
| Protection class IP | IP00 |
| Dissipation |
| Power loss [W] / for rated value of the current / at AC / in hot operating state / per pole | 11 W |
| Electricity |
| Let-through current / I2 t / maximum permissible / in utilization category / AC-22 B / at 400 V | 1 000 000 A²·s |
| Main circuit |
| Number of poles / for main current circuit | 3 |
| Operating power | |
| at AC-23 A / at 400 V / at 50/60 Hz / rated value | 132 000 W |
| at AC-23 A / at 500 V / at 50/60 Hz / rated value | 132 000 W |
| at AC-23 A / at 690 V / at 50/60 Hz / rated value | 185 000 W |
| Operating voltage | |
| at AC / at 50/60 Hz / rated value | 690 V |
| at DC / rated value | 440 V |
| Rated current Ie / maximum / in utilization category | |
| AC-21 A / at 400 V | 250 A |
| AC-21 A / at 500 V | 250 A |
| AC-21 B / at 400 V | 250 A |
| AC-21 B / at 500 V | 250 A |
| AC-22 A / at 400 V | 250 A |
| AC-22 A / at 500 V | 250 A |
| AC-22 B / at 400 V | 250 A |
| AC-22 B / at 500 V | 250 A |
| Auxiliary circuit |
| Number of CO contacts / for auxiliary contacts | 0 |
| Number of NC contacts / for auxiliary contacts | 0 |
| Number of NO contacts / for auxiliary contacts | 0 |
| Short circuit |
| Maximum short-circuit current breaking capacity (Icu) / at 400 V / rated value | 120 kA |
| Conditional rated short-circuit current | |
| 400V | 100 kA |
| 500V | 100 kA |
| in utilization category / AC-21 A / at 400 V | 100 kA |
| in utilization category / AC-21 A / at 500 V | 100 kA |
| in utilization category / AC-21 B / at 400 V | 100 kA |
| in utilization category / AC-21 B / at 500 V | 100 kA |
| in utilization category / AC-22 A / at 400 V | 100 kA |
| in utilization category / AC-22 A / at 500 V | 100 kA |
| in utilization category / AC-22 B / at 400 V | 100 kA |
| in utilization category / AC-22 B / at 500 V | 100 kA |
| Connections |
| Connectable conductor cross-section | |
| for main contacts | |
| — stranded / maximum | 150 mm² |
| Type of connection, main circuit | Flat-type screw terminal |
| Type of electrical connection | |
| for main current circuit | flat connector |
| Mechanical Design |
| Height | 160 mm |
| Width | 240 mm |
| Depth | 207 mm |
| Type of mounting | fixed mounted |
| Mounting position | any |
| Mounting type | floor mounting |
| Mounting type | |
| front mounting with 4-hole attachment | No |
| front mounting with central attachment | No |
| rail mounting | No |
| Net weight | 4.45 kg |
| Environmental conditions |
| Ambient temperature | |
| during operation / minimum | -25 °C |
| during operation / maximum | 55 °C |
| during storage / minimum | -50 °C |
| during storage / maximum | 80 °C |
