9421LM1 SQUARE D, 9421LM1 Datasheet - Page 29

• Manufacturer Part Number: 9421LM1
• Description: CIRCUIT BREAKERS, ACCESSORIES
• Manufacturer: SQUARE D

Dimensions – inches (millimeters)
Outline Dimensions and General Location Information for
MEL, MAL, MHL, and MXL Circuit Breakers (800A and 1000A Frames)
and NAL, NCL, NEL, and NXL Circuit Breakers (1200A Frames)
Frame Size
To ensure adequate wire-bending space to lug surface when maximum wire size is used, refer to NEC Article 430-10.
t 9422 R2 will extend dimension 7” (178mm) (two required).
q Minimum mounting depth when using MAL or MHL circuit breakers can be decreased to 6.63” (168mm) by using Class 9422 Type RT1B conversion kit.
MEL, MXL
NAL, NCL
NEL, NXL
Breaker
Circuit
MHLq
MAL,
12/97
Type
RX1
RT1
RT1
13.38
13.38
19.63
(340)
(340)
(499)
A
16.38
16.38
25.50
(416)
(416)
(648)
B
13.50
(118)
(118)
(343)
4.63
4.63
C
11.00
(229)
(229)
(279)
9.00
9.00
min
Dt
18.38
18.38
18.37
(467)
(467)
(467)
max
Dt
© 1997 Square D All Rights Reserved
(118)
(118)
(171)
4.63
4.63
6.75
E
F
0
0
0
11.44
10.69
(291)
(272)
(222)
8.75
G
10.69
10.69
(272)
(272)
(222)
8.75
H
(136)
3.44
3.44
5.34
(85)
(85)
J
0.50 (13)
0.5 (13)
0.5 (13)
Dia. (4)
Dia. (4)
Dia. 4
K
15.75
(246)
(246)
(400)
9.69
9.69
L
(168)
(168)
(229)
6.63
6.63
9.00
M
14.00
14.00
13.75
(356)
(356)
(349)
N
(125)
3.00
3.00
4.94
(76)
(76)
P
(132)
(132)
(187)
5.19
5.19
7.38
Q
1.69
1.69
1.75
(43)
(43)
(44)
R
29