Product Details
275 Embedded Pole
The 275 embedded pole is intended for vacuum circuit breaker assemblies, with conductor and drive interfaces that require their own matching drawings.
Technical Description
The 275 pole provides a separate configuration for vacuum circuit breaker assembly. Review the interrupter specification, terminal orientation, mounting pattern, insulation clearances and operating travel together. Its designation does not establish its height or interchangeability with the 205 pole. Specify the pole assembly and any mounting or conductor accessories separately. Electrical switching duties and mechanical endurance need evidence for the actual interrupter and mechanism combination selected for the breaker.
Technical specifications
| Parameter | Value / conditions |
|---|---|
| Rated voltage | 12 kV |
| Rated current | 630 A |
| Rated frequency | 50/60 Hz |
| Rated peak withstand current | 63 kA |
| Rated short-time withstand current (4 s) | 25 kA |
| Power-frequency withstand voltage (1 min) | 48 kV |
| Lightning impulse withstand voltage (peak) | 85 kV |
| Circuit resistance at rated contact force | ≤41 μΩ |
| Partial discharge | ≤5 pCCatalog test voltage: 13.2 kV. |
| Contact erosion limit | 3 mm |
Values apply to the listed configuration. Use the matching drawing when specifying interfaces.
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