29
10/09 AWB1230-1605
Effective October 2009
Operation and maintenance of
IZM low voltage air circuit breakers
MOELLER
www.moeller.net/de/support
Figure 38. Connection Diagram for IZM97 and IZM32 Frame with Digitrip 1150 (Type P Trip Unit)
Notes: 1.
Three-wire
crimp
if
high-instantaneous
trip
module
is
supplied.
2.
All
auxiliary
switches
shown
with
breaker
in
OPEN
position
and
with
spring
not
charged,
and
with
trip
unit
in
“non-tripped”
state
(OTS
switches).
3.
T
he
s
pr
in
g
re
le
as
e
ac
ce
ss
or
y
co
ns
is
ts
o
f
an
“
S
R
”
co
il
an
d
a
P.
C
. b
oa
rd
. T
he
p
rin
te
d
ci
rc
ui
t
bo
ar
d
pr
ov
id
es
a
0
.2
0-
se
co
nd
p
ul
se
fo
r
th
e
cl
os
in
g
op
er
at
io
n.
V
ol
ta
ge
m
us
t
be
r
em
ov
ed
a
nd
t
he
n
re
ap
pl
ie
d
fo
r
su
bs
eq
ue
nt
o
pe
ra
tio
n.
A
n
op
tio
na
l l
at
ch
c
he
ck
s
w
itc
h
(L
C
S
) a
cc
es
so
ry
m
ay
b
e
co
nn
ec
te
d
to
t
he
s
pr
in
g
re
le
as
e.
T
he
(c
lo
se
d)
L
C
S
d
el
ay
s
th
e
sp
rin
g
re
le
as
e
pu
ls
e
un
til
t
he
b
re
ak
er
m
ec
ha
ni
sm
is
r
ea
dy
t
o
cl
os
e
(c
ha
rg
ed
a
nd
r
es
et
).
(T
hi
s
w
ill
e
ns
ur
e
th
at
t
he
la
tc
h
w
ill
a
lw
ay
s
be
in
t
he
p
ro
pe
r
st
at
e
be
fo
re
t
he
sp
rin
g
re
le
as
e
pu
ls
e
is
in
iti
at
ed
.)
If
vo
lta
ge
is
m
ai
nt
ai
ne
d
to
t
he
s
pr
in
g
re
le
as
e,
t
he
c
lo
si
ng
p
ul
se
w
ill
o
cc
ur
w
he
n
th
e
m
ec
ha
ni
sm
is
c
ha
rg
ed
a
nd
r
es
et
(L
C
S
o
pe
n)
. V
ol
ta
ge
m
us
t
be
r
em
ov
ed
a
nd
r
ea
pp
lie
d
to
t
he
s
pr
in
g
re
le
as
e
fo
r
su
bs
eq
ue
nt
o
pe
ra
tio
n.
4.
To
provide
selected
time
delays
for
short
time
and/or
ground
time
functions
for
testing
or
non-zone
interlocking
applications,
a
jumper
from
B
-8
to
B
-9
is
required.
5.
On
three-pole
breakers
only
, having
ground
fault
functionality
, a
jumper
installed
from
B
-6
to
B
-7
will
enable
source
ground
fault
sensing
and
disable
residual
ground
fault
sensing.
Inputs
B
-4
and
B
-5
will
be
reassigned
for
source
ground
sensor
inputs.
6.
Normally
opened
contact
programmed
as
relay
A
via
Digitrip
front
panel
(alarm
contact).
7.
Normally
closed
contact
programmed
as
relay
B
via
Digitrip
front
panel
(block
close
contact).
8.
Normally
open
contact
programmed
as
relay
C
via
Digitrip
front
panel
(latching
contact).
9.
This
lead
supplied
on
G
62
style
high-instantaneous
trip
module
only
.
10.
Motor
operator
switch
shown
with
breaker
closing
spring
discharged.
11.
On
four
-pole
breakers,
the
neutral
current
sensor
is
the
same
style
and
wired
the
same
as
the
phase
sensors,
and
is
located
within
the
breaker
frame.
The
secondary
contacts
B
-4,
B
-5,
are
not
wired
out.
12.
Four
-point
socket
used
here.
13.
Second
shunt
trip
may
be
installed
(using
A
-7,
A
-8
contacts)
in
place
of
UVR
. Third
auxiliary
switch
not
available
with
second
shunt
trip.
14.
Only
one
latch
check
switch
may
be
installed.
Use
of
customer
-accessible
latch
check
switch
(B
-29,
B
-30)
in
series
with
spring
release
defeats
anti-pump
function
and
is
not
recommended.
See
Note
3
for
spring
release
latch
check
switch.
SR–
SR+
+
