It must be ensured that the supply power to the
compartment is turned off/ compartment is de-
energized for all the incoming and outgoing
circuits of the LVS prior to any work being
conducted on it
During the installation and related work on the
equipment, it must be ensured that the operator
is using the prescribed PPE for the specified tasks
Ensure only qualified personnel install, operate, service and maintain all electrical
equipment
.
Danger
Installing AKD-6 Retrofill Circuit Breaker
21 - Breaker Installation Overview
Note: While installing the breaker, if the AKD-6 inner housing & front door assembly move
inward more than a couple inches from the fully Disconnected position, before the breaker
and moveable rails are pushed in and front rail latches are toggled; then interlocks at the
compartment rear will block movement of the sliding rails & breaker.
For AKR 30/50/T50 AKD-6 Retrofill Breakers
The original AKR-30/50 style breaker would unlatch the two levers by motion of the
racking cams as it began its 4.25” Drawout travel. The Emax 2 Retrofill breaker has a 2.5”
drawout travel. The thin sheet metal locking levers on both sides of the compartment should
be removed. This will be done with a punch of a slightly smaller diameter than the 1/8” roll
pin being removed. Drive out the pins. Remove both right and left side levers, torsion
springs and roll pins. After loading the new breaker and sliding the rails fully inward; the rail
levers are toggled as usual. the breaker & inner housing can be pushed inward until the new
breaker's racking cams engage the compartment racking pins. Then the door can be closed
and the breaker can be racked in normally.
The rail latch defeat Levers found on the original AKR 30/50/T50 breakers and shown in
Figures 19 were eliminated for two reasons.
1) To make space for mechanical parts added to allow the original AKD-6 compartment
mounted key interlock to function with the retrofill circuit breaker.
2) The AKD-6 locking levers were often damaged and not working to hold the inner
compartment housing and door assembly in the Disconnect position (as shown on the
original indicator tape in AKD-6), while sliding the breaker into the switchgear.
Note : Use the plastic loading stop tool a key slot to hang the tool for storage as shown in
Figures. 20. It will stop the inner housing from going in too far which would prevent sliding
In the breaker and two rails fully inward to the point where one can rotate the Rail Locking
Levers to engage them with the fixed rails. Store the Loading Stop Tool back on the left side-
-frame of the breaker. Push the breaker in to engage the racking cams. The inner housing will
slide in further about 2 inches.
24 ©2022 Emax 2 Retrofill Circuit Breakers 800A-4000A
2TSA451014P0000 Rev-B
