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. 

1.3 Approvals and certificates 

Detailed information, please refer to Certificates Table on the last page.