GE AK-50 User Manual

Low
-
voltage
Power
Circuit
Breakers
GEI
-
74600
r
1
.
Stationary
Arcing
Contact
2
.
Pin
(
Stationary
Arcing
Contact
)
3
.
Insulation
4
.
Movable
Arcing
Contact
4
A
.
Stationary
Intermediate
Contact
5
.
Movable
Main
Contact
6
.
Shouldered
Pin
7
.
Link
8
.
Pin
(
Arcing
Contact
Link
)
9
.
Insulating
Link
10
.
Pin
(
Insulating
Link
)
1
0
A
.
Adjusting
Plate
11
.
Pin
(
Side
Link
)
12
.
Clevis
13
.
Clevis
Pin
14
.
Lowe
r
Stud
15
.
Pole
Unit
Base
16
.
Spring
(
Main
Movable
Contact
)
17
.
Pin
(
Movable
Main
Contact
)
18
.
Pin
(
Movable
Arcing
Contact
)
1
9
-
Side
Link
20
.
Spring
(
Stationary
Main
Contact
)
21
.
Spring
(
Stationary
Arcing
Contact
)
22
.
Upper
Stud
23
.
Pin
(
Stationary
Main
Contact
)
24
.
Stationary
Main
Contact
25
.
Top
Contact
Block
25
I
-
r
-
/
Q
24
-
23
22
r
21
20
19
—
18
17
16
15
M
C
!
and
11
C
.
The
closing
cam
is connected
to
the
center
-
pole
unit
through
a
clevis
and
through
a
crossbar
it
controls
the
opening
and
closing
of
the
contacts
on
all
pole
units
.
F
/
g
.
7
.
Pole
unif
assembly
—
AK
*
75
and
AK
-
J
00
Always
check
contact
wipe
and
pres
-
sure
following
contact
replacement
.
(
See
ADJUSTING
CONTACT
WIPE
AND
PRESSURE
.
)
The
electrical
operating
mechanism
of
Types
AKF
-
lCand
AKF
-
1
D
may
be
equipped
with
an
operating
mechanism
similar
to
the
standard
breaker
.
This
mechanism
can
be
quickly
recognized
by
the
presence
of
two
cut
-
off
switches
(
land
3
,
Fig
.
20
)
.
Later
Type
AKF
-
1
C
and
AKF
-
2
D
breakers
are
equipped
with
dynamic
-
brake
type
mechanisms
.
These
mechanisms
can
easily
be
identi
-
fied
by
the
presence
of
three
cut
-
off
switches
.
Refer
to
the
section
of
these
instructions
entitled
DYNAMIC
BRAKE
for
a
description
of
the
operation
and
adj
ustments
.
Movable
Intermediate
and
Main
Contacts
(
Fig
.
6
)
1
.
Remove
the movable
arcing
con
-
tacts
as
described above
.
OPERATING
MECHANISMS
2
.
Loosen
spring
(
17
)
.
3
.
Remove
braid
if
present
by
re
-
moving
screw
at
bottom
of
contact
.
ELECTRICALLY OPERATED
AK
-
50
,
-
75
and
-
100
;
MANUAL
AK
-
1
-
50
4
.
Slide
link
(
12
)
to
the
side and
off
of
pin
(
7
)
.
The
electrically
operated
mecha
-
nism includes
a
motor
and
a
gear
re
-
duction
unit
,
which
charges
the
closing
springs
(
16
,
Fig
.
10
)
through
a
crank
shaft
(
14
,
Fig
.
10
)
.
The
crank
shaft
has
an arm
with
a
roller
(
12
,
Fig
.
10
)
which
rides
on
the
closing
cam
(
2
,
Fig
.
11
)
.
The
position
of
this
closing
cam
roller is
shown
in
Fig
.
11
A
,
11
B
,
5
.
Slide
pins
(
7
)
and
(
18
)
far
enough
to
the
side
to
allow
the
movable
inter
-
mediate
contacts to
be
replaced
.
With
the breaker
open
and the clos
-
ing
springs
discharged
,
the
sequence
of
operation
is
as
follows
:
6
.
Reassemble
parts
in
reverse
order
.
Courtesy of NationalSwitchgear.com

GE AK-50 Specifications

General

Brand	GE
Model	AK-50
Category	Circuit breakers
Language	English