KB0 for isolation:
Isolation type KB0 is available for isolating of distribution circuit and the power
of motor circuit. It is suitable for isolation either for main circuit or for
control circuit. Its open and close positions can be clearly indicated. The main
data of its main circuit and auxiliary modules are as same as those of the basic
type KB0. The outline and installation dimensions of isolation type are as same
as those of basic type of KB0.
Tripping position:
In case of over load, over current, phase failure, or short-circuit happened in the
closed circuit, and operating of its corresponded internal functional modules,
the main contacts and coil control contacts are all in the opened position.
Open position:
Coil control contacts are in the open position, and the main contacts of KB0 are
kept in the open position.
Reset position:
Only the rotary handle is in this position, can the tripped KB0 be reset normally?
Short-circuit fault indication:
The red mark of KB0 cannot be seen under normal working condition. In case of short-circuit
fault, the red mark is indicated.
Automatic control position:
The internal coil control contacts are in the closed position, and under this state,
the remote automatic control is available through opening or closing of the
coil control circuit.
Open and close indication:
The mark will be in red indication when the main circuit is closed. In case the KB0
is opened normally, the red mark cannot be seen.
Isolation position:
To contra rotate the rotary handle to this position, and its internal main circuit
is in the isolation position.
