
Scope of application
| Model | ARM3-400 |
| Rated current In(A) | 225A/250A/315A/350A/400A |
| Rated current of frame size Inm(A) | 400A |
| Usage category | Category A |
| Rated ultimate short-circuit breaking capacity level | L M H |
| Number of poles (P) | 3P 3P/4P 3P/4P |
| Rated working voltage Ue (V) | 400V |
| Rated ultimate short-circuit breaking capacity Icu (kA) | 50KA 70KA 100KA |
| Rated service short-circuit breaking capacity Ics(kA) | 50KA 70KA 75KA |
| Rated working voltage Ue (V) | 690V |
| Rated ultimate short-circuit breaking capacity Icu (kA) | / 20KA / |
| Rated service short-circuit breaking capacity Ics(kA) | / 15KA / |
| Rated insulation voltage Ui (V) | 1000V |
| Rated impulse withstand voltage Uimp (V) | 12KV |
| Mechanical life(time) | 4000 |
| Electrical life(time) | 1000 |
| Arcing distance (mm) | <100 |





