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Power Circuil Breakers,
GEI-86134
DRAWOUT
BREAKER
INTERCHANGEABILITY
In general,
drarvout
breakers
of the
same
type
and
rating are
interchangeable
in their
equipment
compartments ; drawout
breakers of
diJf er
ent
fr
ame
sizes
are
not
interchangeable. To prevent inserting
the
wrong
type
breaker
into
a
drawout compartment,
suitable "rejection hardware"
is
a-ffixed
to
each
breaker
and
its
compartment. Figure
4
shows
a
typical
rejection bracket which aligns with
a re-
jection pin
in
the drawout
rail
(Fig.
3).
When the
wrong type breaker
is
inserted
into
a compartment
the bracket
and pin do not mate, preventing
the
breaker from seating
itself into
the
drawout
rails.
There
is
one
exception
to
the above.
Breakers
of
the same
frame size
having different short
cir-
cuit
ratings
may be interchanged
in
one direction
onlv:
a.
An AKR-3OH can be
inserted into
an
AKR-30
compartment.
b.
An
AKR-50H
can be
inserted into
an
AKR-50
compartment.
The rejection
hardware prevents the converse of
a.
and
b.
Figure
2
shows
the
rejection
pin
and
bracket
combinations
employed. As determined by
its
in-
tended
breaker
type,
each drawout
c
ompartment
has
its
rejection pin
(or
pins) installed
in
one
of three
positions
(A,
B
or
C
front-to-rear)
along the slide
rail(s)
.
Referring to Views 2
and
5, note that
only
the AKR-30H and
50H
types
employtwopins,
one
in
each
slide
rail.
The other breaker
types use
a
single
pin
in
the right side
TaiL
AKRU-3O
ard
50
fused breakers use
a
single
bracket,
whereas
a-ll
nonfused
breakers
carry
two
brackets.
Use
Fig.
2
as
a
guide
for
determining
the proper
breaker
type(s) that
will
be accepted by
any given compart-
ment.
.f
r(
ilil
ill
]l
ill
ltl
ilt
lll
T-n-
AKR.30
o
sa1
'il_
tl
ttt
ltl
ilr
|ll
ll|
ilT
uu
AKR-3OH
(?
n^<
il
ltl
lrlr-
tl
atl
tt
ttl
T-T
AKRU.30
(c,
ffihffi
AKRT.50
@
II
TI
ffil--c
I
neuecrroru
+-il1'-'
i"oJ'JT,rn
T----l;l*A
J
PosrrroNs
ffi
IN
AKRU -
50
(6)
Fig.
2.
Non-interchangeabi,lity (rej
ec
ti.on)
hardware arrangements
i.n
drawout
compartments
for
breaker
Types
AKR
-30/s0H/50/50H,
AKRT
-50 and
AKRU-30/50
z
UJ
F-
F2
<x
o
n
v
-
PLAN
VIEWS
-
KrtJn
I
sluE
RE.JECTION
PINS
IN
SLIDE
RAI
LS
R
IGHT
SLIDE
RAIL
REJECTION
BRACKETS
MOUNTED
ON
BREAK ER
Fig.
3.
Slide
rail
rejection
pi.n
locations
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Questions and answers
trying to remove the breaker using a socket to the all thread counterclockwise and the all thread comes out indicating the jam nuts are absent. is there another way to remove the breaker.
@george A dupre
To remove a GE AKR Series breaker when the all-thread comes out and the jam nuts are absent, follow these steps:
1. Remove the sensor stud if needed to gain working clearance. This can be done by removing its four holding bolts from the rear of the breaker (refer to Fig. 20 in the manual).
2. Disconnect the neutral sensor and verify proper connection and continuity, ensuring it matches the phase sensors in rating and tap setting.
3. Lift out the sensor and its loads.
4. Tap the terminal board to disconnect it.
These steps allow removal of the breaker even without the jam nuts.
This answer is automatically generated