9421LF1 SQUARE D, 9421LF1 Datasheet - Page 37
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9421LF1
Manufacturer Part Number
9421LF1
Description
CIRCUIT BREAKERS, ACCESSORIES
Manufacturer
SQUARE D
Datasheet
1.9422ATCF331.pdf
(44 pages)
Class 9423 Vault Type For Single And Multi-Door Enclosures
Single Or Multi-Door Enclosures – NEMA Type 12 With 61" To 90" Door Openings
The requirements are shown in the table below:
Viewed from Inside Enclosure
k Interlocking lever extension of the flange mounted handle mechanism.
j Actual enclosure opening - not door height.
u Screwdriver interlock assembly can be ordered separately. Class 9423
Note: All mechanisms listed on this page are
suitable for either left or right hand mounting.
1 – M8 door closing
1 – Type M891 locking bar kit
Type CEQ2493.
mechanism
Type M8
Without Interlocking
12/97
Auxiliary Door
Single-Door Enclosure
Type M1
Locking
Locking
Bar
Bar
1/4" Dia. Rod (Supplied By User)
1 – M8 door closing
1 – Type M891 locking bar kit
1 – Type M1 (use with 9422A
Opening
Door j
Type M7
mechanism
handles)
Locking
Locking
(Single Door)
Master Door
u
With Interlocking
Bar
Bar
Type M2
k
© 1997 Square D All Rights Reserved
For each door:
1 – M8 door closing
1 – Type M891 locking bar kit
Required Accessories for Auxiliary Doors
TYPE M8 DOOR CLOSING MECHANISM
The Class 9423 Type M8 door closing mechanism is designed to close and seal 1.125” deep
doors of single or multi-door NEMA Type 12 enclosures. The Type M8 can be used on doors
hinged on either the left or right hand side. Recommended door openings are from 61" – 91". Vault
type handle length is 8".
TYPE M891 LOCKING BAR KITS
The lock bar kit for the Type M8 door closing mechanism contains two lock bars and is available
from stock. The bars can be cut to fit door openings through 91". One lock bar kit is required for
each Type M8 ordered.
TYPE M1
The Class 9423 Type M1 mechanical interlock kit is designed to interlock a Class 9422 handle
mechanism with the Type M8 door closing mechanism. This kit prevents opening the master door
(or single door) with the disconnect handle in the “ON” position, making it mandatory to use a
screwdriver to gain entry to the enclosure, regardless of the disconnect handle position.
TYPE M2
One Type M2 kit is required for each auxiliary door. This kit is required to interlock any auxiliary
door(s) with the master door.
TYPE M7
The first auxiliary door requires 2 Type M7 kits. Additional auxiliary doors require only 1 Type M7
kit. The 0.25” diameter rod used to interconnect the M7 kits is furnished by the user. If the distance
between any two Type M7 kits exceeds 36", an additional Type M7 kit should be installed to pre-
vent the rod from buckling.
mechanism
Without Interlocking
For Master door:
1 – M8 door closing
1 – Type M891 locking bar kit
1 – Type M1
mechanism
(use with 9422A handles)
Multi-Door Enclosure
With Interlocking
Each Auxiliary door:
1 – M8 door closing
1 – Type M891 locking bar kit
Necessary quantities of Types
M2 and M7 for each door (see
below)
mechanism
37