1.1 Function
Protection of circuits against short-circuit currents.
Protection of circuits against overload currents,switch,isolation.
1.2 Selection
Short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,network normal voltage.
Tripping curves:
B curve (3-5In)
Protection for people and big length cables in TN and IT systems.
C curve (5-10In)
Protection for resistive and inductive loads with low inrush current.