October, 1 97 7
Westing house Electric Corporation
Low Voltage B reaker D ivision
Beaver, Pen nsylva nia 1 5009
S u persedes Di mension S heet 29- 1 70
all previous issues.
Page 27: Types LAB, LA and M A R K 75CRc
Type H LA 400 Amperes
Page 28: Types LB. LB B and M A R K 75®
Type H LB 400 Amperes
M ailed to: E, D, C/1 901 , 1 928, 1 929/ P L
Type LAB, L A and M A R K 75® Type H LA B reakers 400 Amperes
MagnetiC Tr1p
Adjustment
,to,ameter
Mount1ng Holes
¥zo,ameter
Counterbore
(4) Holes
Drilling Plans
For Mounting Bolts
Line
End
I�
17
Load
t
- ' '
End
�-20 Tap or 1% Diameter
(4)Holes
Handle
1�
Th1ck
1 °
Toper
Both S1des
l1'%W1de
Load End
Terminal Arrangements
ll
8
Copper Cable Only (Supplied as Standard!
Cat. # T2 55LA W1re Size # 6·350MCM
Cat. #T401 LA Accomodates Smgle #4-250 MCM
Plus Single #3 /0-600 MCM Cables
AI/Cu C a ble ( M ust be Specified)
Cat # TA225LA1 Wire Size #6-350 MCM
Copper or #4-350 MCM Aluminum
Cat. #TA400LA 1 Wire Size #4-250 MCM
Plus S1ngle #3 /0-600 MCM Cables
For Rear Connected Studs
( Non-Conductive Panels)
+
j
,
�t
-t-·+·
Load End
1�D1ameter Hole for 50to225Amps
��
Diameter Hole for 250 to 400Amps
6
Holes for
3
Pole Breaker
4 Holes for 2 Pole Breaker
Om1t 2 Center Holes for 2 Pole Breaker
For Plu
g
-
In Block
11� Rad1us
I§
Line End
Reproduced from Drawing 4550789
D i mension S heet
29-1 70
Page 27
AB DE
-
ION
®
Circuit Brea kers
Rear Connected Studs
( For Non-Conductive Panels)
�-24 Thread
Ampere Style
Dimension Thread
Number
A
225
1 24 1 345
3V,,
225
1 24 1 346
6%,
2 2 5
1 24 1 392
43/j2
400
05B7383G 1 5
5 1 %2
400
0587383G 1 6
7'Y,,
400
05B7383G 1 7 1
O"Y,,
Plug-In Adapter Kit
�
·24
Thread
Poles Ampere
Style
Number
2
70 to 400 3 1 3C644G 2 5
3
70 to 400 3 1 3C644G26
Front Cover C utout
Size
Y, 1 3
Y,- 1 3
Y,- 1 3
'Y.- 1 6
'Y.- 1 6
'Y.- 1 6
Thread
S ize
'Y.- 1 6
'Y.- 1 6
of
Hondle
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