February 1 991
Westinghouse Electric
Corporation
Dis tribution a nd Control B us iness U nit
Electrical Components Divis ion
Pitts bu rgh, Penns ylvania, U .S.A. 1 5220
Type
NB
a nd
M A R K 75®
Type
H NB
Supers ed es Dimens ion Sheet 29-1 70,
pages 35-36, d ated Novem ber 1 98 1
Mailed to : E, D, C/29-1 00A, 31 -400A,
Page
35:
Type
NB, M A R K 75®
Type
H N B
Page
36:
M ounting B lock for Type
N B,
MAR K 75 H NB, SELTRON I C™
Types
N C,
M A R K 75 H N C
31 -500A
Type NB,
MARK 75®
Type HNB Breakers
Current Corry,ng Ports
Om•
lied
from Ce
n
t
e
r
Pole
for
2
Pole Breaker
Line End
I
Sol T Vue
Cov.,
wh•n lnclud•d
Load End
Front Connected Terminals&
Ampere
Catalog No.
Wire Size
Rating
AUCU
Terminals (Supplied as Standardl
700-1000
TA1000 NB1
Triple Cable 3/o-400 MCM
1200
TA1200 NB1
Four Cable 410-500 MCM
Copper
or AUCU
Terminals (Must Be Specifiedl
700-1000
1200
1200
T1000
NB1
T1200
NB1
TA1201 NB1
Triple Cable 3/(}-500 MCM
Four Cable 3/o-400 MCM
Triple Cable-500-750 MCM
Dimens ion Sheet
29-1 70
AB DE-ION®
Circuit B reakers
Bolted Rear Connected Studs
For
700
to
800
Amps
Om1t
from Center Pole
for
2
Pole Brecker
Style
No
A
623B222G01
5 Y,
623B222G02
8
623B222G03 1
OY,
1�·12 Threads
For
900
to
1200
Amps Only
Page 35
L
,c_
linch
M1n1mum
Insulated
Panel
Outs•de
Poles
Stud
Style Number
3738375G04
Center Pole Stud Style
Numbe<3738375G03
(Om•
I
f
o
r
2
Pole Breaker)
D
r
i
l
l
i
n
g
P
l
an
s
F ront Cover Cutout
For Mounting Bolts
(F ront Connected Terminals)
Line End
t_ Handle
Load End
!iBreoker
Reproduced From
Drawing
371 0578
For Rear Connected Studs
( I nsulated Panel)
Line End
7
I
'"··
...
..
<t Breaker
Style
No
A
623B222G01
5Y,
623B222G02
8
623B222G03 1
OY,
<&Changed since previous issue.
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