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| MODEL | EVC8-250A/12KV | EVC8-400A/12KV | EVC8-630A/12KV |
| Main circuit rated voltage (kV) | 12 | 12 | 12 |
| Main circuit rated current (A) | 250 | 400 | 630 |
| Main circuit current making ability (A/100Otimes) | 2500 | 4000 | 6300 |
| Main circuit break-make ability (A/25Otimes) | 2000 | 3200 | 5000 |
| Maximum break ability (A/3Otimes) | 3200 | 4000 | 6300 |
| Mechanical life (times) | 1,000,000 | 1,000,000 | 1,000,000 |
| Engineering lock life (times) | 100,000 | 100,000 | 100,000 |
| Power-frequency withstand voltage for main circuit (kV) | 42 | 42 | 42 |
| Power-frequency withstand voltage for auxiliary circuit (kV) | 2.5 | 2.5 | 2.5 |
| Power-frequency withstand voltage for control circuit (kV) | 2 | 2 | 2 |
| Rated operate frequency (times/h) | 300 | 300 | 300 |
| Engineering lock operate frequency (times/h) | 30 | 30 | 30 |
| Clearance between open contacts (mm) | 5±0.5 | 5±0.5 | 5±0.5 |
| Over travel (mm) | ≥1.2 | ≥1.2 | ≥1.2 |
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