Description
Switch disconnector in new design Iu=630 A, Ue = 690 V, 4-pole 4th pole selectable, AC-21A with door drive 8UC7 Handle dark blue/blue-green Basic masking frame light gray Product phase-out since: 31.08.18 Successor:3KD4640-0QE20-0, diff. dimen, deviat. techn. data, w/o door coupl rot oper mech
| 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 | |||||
| insulation voltage / rated value | 1 000 V | |||||
| type of voltage | AC/DC | |||||
| operating voltage ● at AC / at 50/60 Hz / rated value ● at DC / rated value |
690 V 440 V |
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| Protection class | ||||||
| protection class IP | IP00 | |||||
| Dissipation | ||||||
| power loss [W] / for rated value of the current / at AC / in hot operating state / per pole |
56.6 W | |||||
| Current | ||||||
| Let-through current / I2 t / maximum permissible / in utilization category / AC-22 B / at 400 V |
2 600 000 A²·s | |||||
| Main circuit | ||||||
| number of poles / for main current circuit | 4 | |||||
| operating power | ||||||
| ● at AC-23 A / at 400 V / at 50/60 Hz / rated value | 350 000 W | |||||
| ● at AC-23 A / at 400 V / rated value | 350 000 W | |||||
| ● at AC-23 A / at 500 V / rated value | 350 000 W | |||||
| ● at AC-23 A / at 690 V / at 50/60 Hz / rated value | 280 000 W | |||||
| operating current / rated value | 630 A | |||||
| Rated current Ie / maximum / in utilization category | ||||||
| ● AC-21 A / at 400 V | 630 A | |||||
| ● AC-21 A / at 500 V | 630 A | |||||
| ● AC-21 B / at 400 V | 630 A | |||||
| ● AC-21 B / at 500 V | 630 A | |||||
| ● AC-22 A / at 400 V | 630 A | |||||
| ● AC-22 A / at 500 V | 630 A | |||||
| ● AC-22 B / at 400 V | 630 A | |||||
| ● AC-22 B / at 500 V | 630 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 |
65 kA | |||||
| Conditional rated short-circuit current | ||||||
| ● 400V | 55 kA | |||||
| ● 500V | 55 kA | |||||
| ● in utilization category / AC-21 A / at 400 V | 55 kA | |||||
| ● in utilization category / AC-21 A / at 500 V | 55 kA | |||||
| ● in utilization category / AC-21 B / at 400 V | 55 kA | |||||
| ● in utilization category / AC-21 B / at 500 V | 55 kA | |||||
| ● in utilization category / AC-22 A / at 400 V | 55 kA | |||||
| ● in utilization category / AC-22 A / at 500 V | 55 kA | |||||
| ● in utilization category / AC-22 B / at 400 V | 55 kA | |||||
| ● in utilization category / AC-22 B / at 500 V | 55 kA | |||||
| Connections | ||||||
| connectable conductor cross-section / for main contacts ● stranded / maximum |
480 mm² | |||||
| Type of connection, main circuit | Flat-type screw terminal | |||||
| type of electrical connection ● for main current circuit |
flat connector | |||||
| Mechanical Design | ||||||
| height | 180 mm | |||||
| width | 293 mm | |||||
| depth | 207 mm | |||||
| Type of mounting | fixed mounted | |||||
| mounting type | floor mounting | |||||
| mounting type ● front mounting with 4-hole attachment ● front mounting with central attachment ● rail mounting |
No No No | |||||
| mounting position | any | |||||
| net weight | 6.57 kg | |||||
| Environmental conditions | ||||||
| ambient temperature / during operation ● minimum ● maximum |
-25 °C 55 °C |
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| ambient temperature / during storage ● minimum ● maximum |
-50 °C 80 °C |
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