8
Westinghouse Electric Corporation
Low Voltage B reaker Division
Beaver, Pen nsylvania 1 5009
October, 1 97 7
S u persedes D i mension S heet 29- 1 70
a l l previous issues.
Motor O perators for Types M A, H M A, N B,
H N B, and S E LT R O N I C Type M C, H M C, N C,
H N C Circuit Breakers
M ai led to: E, D, C/1 901 , 1 928, 1 929/ PL
Page 55: For Types MA, H M A, M C, H M C
Page 56: For Types N B , H N B, N C, H N C
Motor Operato r for M A, H M A, M C, H M C B reakers
Line End
14�
Load End
Cover Mounted Control
Buttons ( Opt1onal, Must
be Instal led at Factory
l
Drilling Plan and Cutout
(Adapter Plate)
Line End
�
D,ometer Hole
t_
of BreaKer
c
I
85
�
14i
Reproduced From Drawing
5669003
�of
Breaker
Handle
"
/
l_
8
Rad,us
_F-[
1§
Q,amet
�
r
I
j
���
D i mension Sheet
29-1 70
Page 55
AB DE-I ON ®
Circuit Brea kers
�-18
Thread
www
. ElectricalPartManuals
. com