Type
50-DH-50
Air Circuit Breaker
of1'1un.
Fig. 12-Cutoff Switch, Early Model
BRACKET
Fig. 13-Cutoff Switch, Late Model
in turn rotates the switch lever to compress the
auxiliary compression spring and permit the switch
to make contact.
The cut-off switch contacts
separate when the moving core returns to its open
position after the closing coil is de-energized. If
then the control switch is reclosed while the breaker
is in the latched position the moving core will move
to the closed position.
13
The cut-off switch supplied on the later models
is mounted on the right side of the mechanism
frame just back of the auxiliary switch. Figure 13
shows the position of the switch when the mecha
nism is latched closed. The switch used in this
case is also a normally closed switch which is held
in the open position by means of a tension spring
which acts on a lever. During the last portion
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