GE Industrial Solutions Power Break II Replacment Stop Block Kit User Manual
DEH40466 Installation Instructions R04
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Power Break® II Circuit Breakers
Replacement Stop Block Kit
Application
This kit is provided to replace the stop block assembly in the
Power Break II insulated-case circuit breakers. The parts
included in this kit are illustrated in
1. In the following instructions and figures, numbers in
brackets refer to the items in Table 1.
[1]
[3]
Figure 1:Parts included in the stop block gasket kit
Item Part # Description Qty.
1
N170P19024 SPRING ASSEMBLY SCREW 1
2 192A6368P1 SPACER 1
3 10054595G1 ASSEMBLY, STOP BLOCK 1
4 192A6976P233 BOLT, N22P21008B6 W/NYLON
5 N405P41B6 LOCKWASHER, STL SPRING 1/4 4
6 10103378P1 5/32 ALLEN WRENCH TOOL 1
Table 1. Parts list for the stop block gasket kit.
PATCH
Figure 1 and listed in Table
[2]
[6]
[4]
[5]
4
Installation
WARNING: Before beginning this procedure, turn
the breaker
sources, and discharge the closing springs.
AVERTISSEMENT: Mettre le disjoncteur à OFF , le
débrancher de toutes les sources de tension et
déclencher les ressorts de fermeture avant
d'entamer cette procédure.
1. Turn the breaker off and discharge the closing spring by
depressing the
ON-OFF. Verify that the breaker OFF-ON indicator shows
OFF on a green background and that the charge
indicator shows
2. A draw-out and stationary-mounted breaker need not
be removed from their enclosures, but be careful that all
primary and control power to the breakers are
disconnected.
3. Loosen the four #8-32 screws that attach the trim plate
to the breaker, if present, and remove the trim plate.
4. Loosen the four screws at the corners of the breaker
cover. Operate the charging handle one time and hold it
extended to remove the cover from the breaker face, as
illustrated in
OFF, disconnect it from all voltage
OFF and ON buttons in the sequence OFF-
DISCHARGED on a white background.
Figure 2.
Figure 2: Removing or installing the breaker top cover.
5. Operate the charging handle four more times (for a total
of five, one less than the six needed to fully charge the
closing spring). If the closing spring does not charge, use
the following steps:
a. With a large screwdriver, put pressure on the end of
the closing spring, as shown in
Figure 3 and Figure 4.
b. Maintain pressure with the screwdriver while
operating the charging handle one time.
c. Remove the screwdriver and operate the handle four
more times.
6. Install the spring assembly screw [1] with spacer [2] at
the end of the spring assembly, as shown in
5
with the supplied
/32 Allen Wrench tool [6].
Figure 5
7. Release the closing spring by pressing the close de-latch
lever with a screwdriver, as shown in
Figure 6. Then
press the lever nearest the spring to release the breaker
mechanism, as shown in
Figure 8.
8. Using a screwdriver pull the ratchet arm away from the
sprocket to allow for the shaft mechanism to rotate
freely (
Figure 10). While holding the ratchet arm away
from the sprocket, press the spring against the stop
block as shown in
spring assembly up and out, as shown in
Figure 11, then lift the front end of the
Figure 12.
Screwdriver
Figure 4: Application point of screwdriver.
[1, 2]
Figure 3: Applying pressure to the end of the closing spring.
Figure 5: Installing the spring assembly screw.
Close De-latch
Lever
Figure 6: Pressing the close de-latch lever to release the
closing spring.
Figure 8: Releasing the breaker mechanism.
Figure 7: Illustration of Bolt on Handle Si de of Assem bl y
Wall
Front Bolt
Rear Bolt
(Not Present with
Electric Operator
Figure 11: Pressing the spring assembly to allow removal.
Figure 9: Secondary Connections Piece to be Removed Before
Electric Operator
Figure 10: Illustration of ratchet arm being pulled away from
sprocket
9. If the Electric Operator is installed on a stationary
breaker it must be detached before the Stop Block is
replaced. First remove the gray plastic secondary
connection piece from the left side of the breaker (
). Remove the two long Phillips screws and external
9
Figure
tooth lock washers from the left side of the Electric
Operator (
Figure 22 & Figure 23) with a #3 Phillips
screwdriver.
10. If working on the stationary model, support the Electric
Operator with your hand so it does not fall following the
next step. Remove the two smaller hex screws and split
lock washers from the silver bottom plate that secures
the Electric Operator to the assembly walls (
Figure 23).
The Electric Operator may now be set-aside without
disconnecting the electric snap connections. The Drawout model only requires that the electric operator be slid
7
to the left slightly allowing for a
the bolt on the side of the assembly wall (
/16 wrench to access
Figure 21 &
Figure 22).
11. Remove the front and rear bolts that secure the stop
block to the left side of the spring assembly wall (
), and the bolt securing the stop block assembly to the
11
Figure
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