NB-BB Moulded Case Circuit Breaker
△ According to usage:distribution and motor protection type.
△ According to the connection mode:front panel connection, back panel connection, plug-in connection.
△ According to the operting mode:for direct handle operating, for external rotary handle operating, for motor operator operating.
△ According to the overload release type:magnetic release(only instantaneous), thermodynamic magnetic type(dual).
△ According to the number of poles:three, four poles.