| Switch disconnector with fuse in new design Iu=250 A, Ue = 690 V, 3-pole for BS88 fuse form B1/B3 basic version without 8UC6 handle and shaft with isolating contact strip for MCC |
| Model |
| Product brand name | SENTRON |
| version | Basic version without handle |
| Design type | plug connector on the top |
| Design of the operating mechanism | manual operating mechanism |
| Type of the driving mechanism / motor drive | No |
| Number of poles | 3 |
| Size of disconnecting link | Form B1-B3 |
| Fuse system | fuses according to BS 88 |
| Insulation voltage / rated value | 1 000 V |
| Surge voltage resistance / rated value | 8 000 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 |
| Operating current / at AC-21 / rated value | 250 A |
| Continuous current / rated value | 250 A |
| 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 |
| Suitability for use | |
| EMERGENCY OFF switch | Yes |
| safety switch | Yes |
| Product feature / interlock | Yes |
| Short circuit |
| Conditional rated short-circuit current / in utilization category | |
| AC-21 A / at 400 V | 100 kA |
| AC-21 A / at 500 V | 100 kA |
| AC-21 B / at 400 V | 100 kA |
| AC-21 B / at 500 V | 100 kA |
| AC-22 A / at 400 V | 100 kA |
| AC-22 A / at 500 V | 100 kA |
| AC-22 B / at 400 V | 100 kA |
| 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 connector bottom connection, M10 |
| Type of electrical connection | |
| for main current circuit | flat connector |
| Mechanical Design |
| Height | 160 mm |
| Width | 247 mm |
| Depth | 279 mm |
| Type of mounting | plug-in version |
| Mounting position | any |
| Mounting type | clip-on |
| Mounting type | |
| front mounting with 4-hole attachment | No |
| front mounting with central attachment | No |
| rail mounting | Yes |
| Environmental conditions |
| Ambient temperature | |
| during operation / minimum | -25 °C |
| during operation / maximum | 55 °C |
| during storage / minimum | -50 °C |
| during storage / maximum | 80 °C |
