Replacement Parts
ITEMS
DESCRIPTION
EATON STYLE NUMBER
MOTOR CUTOFF SWITCH
QUICK DISCONNECT
RING TERMINALS
699B199G01
699B199G04
WARNING
VERIFY CIRCUIT BREAKER IS OPEN, CLOSING SPRINGS ARE
DISCHARGED AND CONTROL POWER IS DISCONNECTED.
REFERENCE: THE SPRING RELEASE COIL IS THE COIL ON THE
LEFT SIDE, LOOKING INTO THE CIRCUIT BREAKER, WITH
THE GREEN “PUSH TO CLOSE” LABEL. THE SHUNT TRIP
COIL IS THE COIL ON THE RIGHT SIDE, LOOKING INTO THE
CIRCUIT BREAKER, WITH THE RED “PUSH TO OPEN” LABEL.
Adjustment of the Motor Cutoff Switch
With the circuit breaker in the open and discharged
state, remove the front cover.
Manually charge the circuit breaker, making sure to use
full and complete strokes of the charging handle. The
switch arm must drop on the last charging stroke, and
not bend when the motor cut-off cam returns to the
normal position.
With a small flat-head screwdriver, slowly raise the
straight arm of the switch assembly. The bent arm of
the second switch should rise at the same time as the
straight arm. Both switches should change state at
approximately the same position, and when the straight
arm is approximately half way between the low and
high positions of the motor cutoff cam. The change of
the state of the switches can be determined by a pair of
audible “clicks”.
Adjustment: If the switch with the straight arm changes
state outside of the target region, the switch assembly
can be removed, the switch mounting screws can be
loosened and the switch position may be adjusted as
necessary. Care should be taken to not bend the straight
switch arm unless absolutely necessary to correct
misalignment caused by physical damage to the switch
arm. Re-install the switch assembly and verify that the
switch with the straight arm changes state inside of the
target region.
Verify that both switches change state at approximately
the same position.
If the switch with the bent arm changes state outside
of the target region between the low and high positions
of the motor cutoff cam, the bent switch arm may be
adjusted by gently bending the arm until both switches
operate at approximately the same position.
Verify the electrical operation of the motor, making sure
that the motor circuit cuts off at the appropriate time.
If during an electrical charging operation the camshaft
fails to rotate far enough for the motor cutoff switches
to actuate, the charging pawls may require adjustment.
Component
Adjustment
Testing the motor cutoff switch for adjustment on a 150VCP-W25 mechanism.
Return the circuit breaker to a discharged and open
state. Remove all control power from the circuit breaker.
Manually charge the circuit breaker half-way. Raise the
manual charging bar and hold it in the upper position.
Using a pair of needle-nose pliers, grip the pin of the
charging pawl located just below the charging gear
mounted below the manual charging bar insertion point.
Pulling the pin of the charging pawl toward you will
rotate the pawl away from the charging gear. Hold the
charging pawl away from the charging gear.
Gently lower the manual charging bar.
Gently let the charging pawl return to rest on the
charging gear.
Using a feeler gage, measure the gap between the
top of the charging pawl and the closest tooth of the
charging gear. The gap should be between .045 and
.090 inches.
If this gap needs to be adjusted:
Locate the stop bracket. The stop bracket is a steel
angle just to the right of the manual charging bar
insertion point, secured to the right hand mechanism
side sheet with two bolts.
Using two ½ inch combination wrenches or socket
wrenches, slightly loosen the stop bracket bolt at the
front of the mechanism. Do not completely loosen or
remove this bolt. The bracket will pivot on the rear bolt,
but the front bolt must continue to provide enough
friction to hold the bracket in position.
Using a flat–head screwdriver, lower (or raise as
necessary) the position of the front of the stop bracket
slightly.
Tighten the stop bracket bolt at the front of the
mechanism.
Complete the charging of the circuit breaker. Close and
open the circuit breaker and repeat steps 9-13 until the
gap between the charging pawl and the closest tooth of
the charging gear is within the specified range.
Re-verify the electrical operation of the motor, making
sure that the motor circuit cuts off at the appropriate
time.
13
EATON
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Visual Instruction Booklet Essentials | 150VCP-W 25kA 1200A | January 2017
