- Arc which may arise while breaking faulty current is extinguished first by Arc chute in main body of circuit breaker and the completely extinguished by Arc cover. By preventing arc from exposing to the outside, it protects itself from all kinds of accidents.
- It is categorized into 8 types by ratings and poles.
| Ampere frame | Cover length (mm) |
|---|---|
| 2000AF 3P | 281.4 |
| 2000AF 4P | 366.4 |
| 4000AF 3P | 359.4 |
| 4000AF 4P | 474.4 |
| 5000AF 3P | 576.4 |
| 5000AF 4P | 746.4 |
| 6300AF 3P | 732.4 |
| 6300AF 4P | 962.4 |
