37
Instructional Leaflet
IL70C1037H05
Effective October 2009
Digitrip models 520, 520i; and 520M, 520Mi,
520MC, 520MCi trip units for use only in
Magnum and Magnum DS circuit breakers
eaton corporation
www.eaton.com
appendix c: typical breaker master connection diagram
Figurt 50. Typical Brtaktr Masotr CNnntcoiNn Diagram
WHT
BRN
WHT
BRN
BRN
WHT
BLACK
WHITE
BROWN
B-28
B-29
PDAD WIRES
B-24
B-25
52a
52b
AUX. SWITCH
(OPTIONAL)
B-26
B-27
B-21
B-20
B-22
B-23
10:1
ACTN
R/1
CSC
CSB
R/1
R/1
CSA
1
ACTC
10:1
10:1
ACTB
1
1
ACT
A
10:1
(OPT
.)
(OPT
.)
SEE NOTE 3
OST2_COM
OST1_COM
A-6
A-5
A-4
OTS2_MAKE
OST2_BREAK
OTS2
OTS1
SR
SR
A
C
A
C
SEE NOTE 2
BLACK
+
SEE NOTE 1
#22
A
WG
GF_SGND
ZONE_OUT
ZONE_IN
ZONE_COM
52b
LOAD
LINE
N
J2-6
J2-5
J2-4
J2-3
J2-2
J2-1
SUPPLIED)
J1-1
J1-2
J1-3
N
C
L
L
B
A
L
A
C
A
C
B-4
B-5
NEUTRAL2
NEUTRAL1
R/1
B-6
B-9
B-7
B-8
COIL
C
HIGH INST
.
HIGH INST
.
COIL
B
COIL
A
HIGH INST
.
24 OHM
(WHEN
MODULE
TRIP
INST
.
HIGH
TA
K1-8
A2
K1-9
A1
K1-6
B2
K1-7
B1
K1-4
C2
K1-5
C1
K1-3
ST
-
K1-2
ST1
K1-1
DGND
520/520M/520MC
DIGITRIP
PLUG
RA
TING
CLOSE CONT
ACT
CLOSE COIL
B-13
SR
B-12
OST1_BREAK
OST1_MAKE
A-1
A-2
A-3
B-10
A-8
UVR
A-7
A-15
A-14
A-1
1
A-10
GROUND
ALARM
POWER SUPPL
Y
MODULE
520M / 520MC Only
J3-3
J3-2
J3-1
J4-2
J4-1
J4-4
J4-3
ATR V_COM
ATR_VOL
T
ATR_ALARM
ATR_REL_COM
N2
N1
GF_SGND
G_ALARM
Z_OUT
Z_IN
+30VDC INPUT
(520M ONL
Y)
Z_COM
BRKCLSD
K2-8
K2-9
K2-7
K2-6
K2-5
K2-4
K2-3
K2-2
K2-1
A-30
A-29
A-27
A-28
B-19
B-18
(OPTIONAL)
AUX. SWITCH
52b
52a
B-17
B-16
A-22
A-21
A-19
A-20
A-26
A-25
(OPTIONAL)
AUX. SWITCH
52b
52a
A-24
A-23
ST
A
C
A
C
B-1
1
UVR
UVR
ST
ST
B-30
G_ALARM
OUTPUT
-
G_ALM 2
(MCR)
52a
SEE NOTE 5
G_ALM 1
2
1
H2
X2
X1
(OPT
.)
(WHEN REQ
.)
BRIDGE REC
TIFIER
RESIST
OR
(WHEN REQ
.)
DOOR SWIT
CH
LE
V-IN
SWIT
CH
MO
TOR CUT
-OFF
(WHEN REQ
.)
A
-16
MO
TOR+
MO
TOR-
ELEC
TRIC OPER
AT
OR
MO
TOR
A
C
A
C
SC
B-15
B-14
B2
INCOM 1
INCOM 2
B1
I1-1
I1-2
Notes: 1.
Four
-wire
crimp
connection.
2.
Three-wire
crimp
if
High
Instantaneous
Trip
Module
is
supplied.
3.
Three-wire
socket
used
with
Digitrip
520M
Ground
Alarm
Power
Supply
Module
will
“hang
unconnected”
if
Digitrip
520
is
supplied.
4.
All
auxiliary
switches
shown
with
breaker
in
open
position
and
with
spring
not
charged
and
with
trip
unit
in
“non-tripped”
state
(OTS
switches).
5.
The
“SR”
device
has
additional
circuitry
that
provides
a
0.5
second
signal
pulse
for
closing
operation.
Power
must
be
removed
and
then
reapplied
for
a
subsequent
operation. 6.
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.
7.
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.
For
Digitrip
520MC
Only
