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| Customization: | Available |
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| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
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SL-1 Spring Operating Mechanism for 12kV VS1 Vacuum Circuit BreakerThe SL-1 Spring Operating Mechanism is designed for indoor medium voltage vacuum circuit breakers, compatible with VS1, VK and equivalent VCB types.
| S/N | Item | Unit | Data | ||
| 1 | Contact opening distance | mm | 10 ± 1 mm | ||
| 2 | Contact stroke | mm | 3.8 - 4.6 mm | ||
| 3 | Three-phase closing/opening simultaneity | ms | ≤ 2 ms | ||
| 4 | Contact bounce time (closing) | ≤ 2 ms | |||
| 5 | Phase center distance | mm | 210 ± 1.5 | 230 ± 1.5 | |
| 6 | Rated short-circuit breaking current | kA | 25 | 31.5 | 40 |
| 7 | Contact pressure after closing | N | 2600±100 | 3150±150 | 4500±300 |
| 8 | Average opening speed (70% after contact separation) | m/s | 1.3 ± 0.2 | ||
| 9 | Average closing speed (30% before contact closing) | m/s | 0.8 ± 0.2 | ||
| 10 | Opening / closing time | ms | 25 - 75 | ||
| 11 | Output shaft rotation angle | ° | 30° - 33° | ||
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