NB8-63(H)

1.1 Function
protection of circuits against short-circuit currents,
protection of circuits against overload currents,
switch, isolation.
NB8 -63H circuit-breakers are used in domestic installation,
as well as in commercial and industry electrical
distribution systems.

1.2 Selection
Technical data of the network at the point considered:
short-circuit current at the circuit-breaker installation point,
which must always be less than the breaking capacity of
this device, network normal voltage.