Application

1.Appliction: For protecting cables and equipments against overload and short circuit.

2.General rules for choosing MCB.

  a.Technical data of the network at the point considered:

  The earthing systems, short-circuit current at the circuit at the circuit breaker installation point. Which must always be less than the breaking capacity of this device , network normal voltage.

  b.There are 3 curye characte ristics for magnetic operation:

  B curve (3-5 In)protection and control of the circuits against length cables in TN and IT systems.

  C curve (5-10 In)protection and control of the circuits against overloads and short -circuits; protection for resustive and inductive Ioads with low inrush current.

  D curve(10-14In)protection and control of the circuits against overloads and short -circuits;  Protection for circuits which supply loads with high in rush current at the circuit closing (LV/LV transformers, breakdown lamps).

Specification

Dinmensions