Instruction manual

KRB-5377

4-1-5. Motion of operation mechanisms

Figs. 24 - 27 illustrate the motion of the charging and ON-OFF mechanisms.

For manual closing operation, ON button ◯

rotates

counterclockwise. For electrical closing operation,

push rod ◯

' protrudes downward from the latch

release coil (LRC) and charge latch trigger ◯

rotates

clockwise. This rotates closing trigger shaft ◯

clockwise and closing release lever ◯

disengages

from a semicircular pawl and rotates clockwise. And

charging cam ◯

rotates counterclockwise, so that

charging lever ◯

disengages from closing spring ◯

and rotates counterclockwise. Closing cam ◯

pushed up by charging lever ◯

and rotates clockwise.

At this time, each component is positioned as shown in

Fig. 26. Continued to Fig. 25.

Fig. 24 Closing motion 1 (discharge motion)

Closing cam ◯

rotating clockwise causes closing link

and top link ◯

to be pushed straight. This rotates

closing toggle cam ◯

connected with closing link ◯

counterclockwise, so that crossbar ◯

rotates clockwise

and thus moving contact ◯

comes in contact with

stationary contact ◯

. At this time, each component is

positioned as shown in Fig. 27.

Fig. 25 Closing motion 2

◯