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□ The product is used in overload or short-circuit protection for instrument transformer．At the time of holding up by restrain circuit current way to get minimum from carry on instantaneous to turn on and break,it should be within the range of 0.6-1.8A to fuse the electric current in one minute．
◆Technique data：
| Product type | RN2-3、6、10 | RN215、20 | RN2-35 | |||
| Rated voltage KV | 3 | 6 | 10 | 15 | 20 | 35 |
| Fuse current A | 0.5 | 0.5 | ||||
| Capacity of largest break of three-phase MVA | 500 | 100 | 1000 | 1000 | ||
| Max break curent KA effective value KA | 100 | 85 | 50 | 40 | 30 | 17 |
| Overvoltage multiple Do not exceed | Do not exceed voltage of 2.5 times of rating | |||||
| Resistance of the fuse pipe(Ω) | 93±7 | 200±10 | 315±14 | |||
| Weight Kg | 5.6 | 12.2 | 15.6 | |||
| Fuse weight Kg | 0.9 | 1.6 | 2.5 | |||
