GE AM-4.16-250-9 - Page 6

~
"
“
T
GEK
-
41902
Magne
-
blast
Circuit
Breaker
A
positive
interlock
(
3
)
Figure
4
and interlock
switch
(
2
)
Figure
2
,
are
provided
between
the
breaker and metal
-
clad
unit
to
prevent
raising
or
lowering
of
the
'
breaker
in
the
unit
while
in
a
closed
position
and
to
prevent
a
closing
operation
when the
breaker
is
not
in
either
the
fully
raised
or
lowered
position
.
To
insure
that
this interlock
will
function
during
manual
,
as
well
as
during
electrical
operation
of
the
equipment
,
both mechan
-
ical
and
electrical
blocking
is
provided
.
If
for
any
reason
the
closing springs
should be
dis
-
charged against
the
positive
interlock
the mechan
-
ism
will be
jammed
and
be
inoperable
.
The
mechanism
can
be released
and
returned
to
the
reset
position
by pushing
in
on
the
trip
lever
(
8
)
Figure
5
.
It
may
require
more
than
normal
force
to
release the interlock
.
When
the
breaker
is used
interchangeably
with
type
MS
-
13
solenoid
operated
breakers
in
M
-
26
metal
-
clad units
,
fuses
(
12
)
Figure
2
,
are
mounted
on
the
breaker
for
protection
of
the
motor
and
closing
circuit
.
These
breakers
are
identified
by
a
"
C
”
or
"
K
"
suffix
in
the breaker
nomenclature
.
.
In
cases
where
breakers
with
type
ML
-
13
mechanisms
must
match and
line
up
with
breakers
having
type
ML
-
11
mechanisms
the
spring
charging
circuit
for
both
mechanisms
should be fused with
Buss
Company
Fusetrons
as
follows
:
Cont
.
Volt
.
Cat
.
No
.
Fuse
Size
t
,
48
v
d
-
c
llOv
d
-
c
125
v
d
-
c
115
v
a
-
c
220
v
d
-
c
250
v
d
-
c
230
v
a
-
c
10
A
FRN
10
FRN
4
FRN
4
FRN
4
FRN
2.5
FRN
2.5
FRN
2.5
4
A
4
A
A
plunger
interlock
,
Figure
14
can
be
provided
when
required
to
operate
a
stationary
auxiliary
switch and
/
or
a
rod interlock
mounted
in
the
metal
-
clad
unit
.
4
A
2.5
A
2.5
A
2.5
A
Spring
Charging
The mechanism
has
a
high
speed
gear
motor
(
10
)
Figure
5
,
that
compresses
a
set
of
closing
springs
through
the action
of
an
eccentric
,
ratchet
,
and
pawl
assembly
.
The
rotary
action
of
the
motor
is
converted
to
a
straight
stroke
through
the
eccen
-
tric
(
11
)
Figure
4
,
and
a
lever
that
carries
a
spring
loaded
driving
pawl
(
3
)
Figure
1
.
2
3
5
6
9
fH
10
yf
/
Figure
4
.
(
8034463
)
Right
Side
View
<
-
ML
-
13
Operating
Mechanism
Figure
5
.
(
8034471
)
Front
View
ML
-
13
Operating
Mechanism
1
.
Upper
Spring
Pin
2
.
Latching
Pawls
3
.
Positive
Interlock
Roller
4
.
Opening
Spring
5
.
Cam
Shaft
6
.
Ratchet
Wheel
7
.
Bearing
Block
8
.
Driving
Pawl
9
.
Lower
Spring
Pin
10
.
Driving
Pawl
Lever
11
.
Eccentric
12
.
Closing
Spring
1
.
Auxiliary
Switch
2
.
Open
-
Close
Indicator
3
.
Trip
Coil
4
.
Prop
Spring
5
.
Operation
Counter
6
.
Trip
Latch
7
.
Charge
-
Discharge
Indicator
8
.
Manual
Trip
Lever
9
.
Manual
Close
Lever
10
.
Motor
6
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