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□This product is suitable for indoor ac 50 hz, rated voltage 12 kv system, it can be reliably cut between minimum breaking current and open circuit current rating of any fault current, the product not only with the current limiting fuse with relatively high breaking capacity, and have the unlimited streaming fuse have the characteristics of low current protection is good, can get a full range of open circuit is good protective properties.
◆Type instruction：
Sheet :CHART 1
◆Basic parameters：
| Rated voltage (KV) | Rated current of the fuse (A) | Rated current of the fuselink(A) | Rated bredk current KA |
| 12 | 63 | 10、16、20、25、25、31.5、40、50、63 | 50 |
◆Selecting principles：
| 12KV primary voltage of the transformer 12KV | ||
| Transformer capacity KVA | Fuse rated current (A) | Fuse type |
| <125 | 10 | |
| 160 | 16 | |
| 200-250 | 20 | |
| 315 | 25 | |
| 400 | 31.5 | |
| 500 | 40 | |
| 630 | 50 | |
| 800 | 63 | |
