protection of circuits against short-circuit currents, protection of circuits against overload currents, switch, isolation.
Technical data of the network at the point considered: the earthing systems (TNS, TNC), short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device, and network normal voltage.
B curve (3-5In)
protection for people and big length cables in TN and IT
C curve (5-10In)
protection for resistive and inductive loads with low inrush current.
protection for circuits which supply loads with high inrush current at the circuit closing
(LV/LV transformers, breakdown lamps).
1.3 Approvals and certificates
For detailed information, please refer to the below link:
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