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Door Closing Mechanisms
Types M5, M6, M1, and M8
schneider-electric.us
Class 9423 / Refer to Catalog 9420CT9701
15
OPERATING MECHANISMS AND
DISCONNECT SWITCHES
Vault Type for Single and Multi-Door Enclosures
Table 15.33 shows the requirements for the door closing mechanism, the locking bar kit,
and the mechanical interlock kit, if used.
Table 15.33: Single or Multi-Door Enclosures—NEMA Type 12 with 40 in. to 60 in. Door Opening
Single-Door Enclosure
Multi-Door Enclosure
Without Interlocking With Interlocking Without Interlocking With Interlocking
1—M6 door closing mechanism
1—Type M660 locking bar kit
1—M6 door closing mechanism
1—Type M660 locking bar kit
1—Type M5 (use with 9422A
handles)
For each door:
1—M6 door closing mechanism
1—Type M660 locking bar kit
For Master door:
1—M6 door closing mechanism
1—Type M660 locking bar kit
1—Type M5 (for use with 9422A
handles)
For each Auxiliary door:
1—M6 door closing mechanism
1—Type M660 locking bar kit
Necessary quantities of Types M2
and M7 for each door (see below)
A
1/4 in. Dia. Rod (supplied by user)
Locking
Bar
Locking
Bar
Locking
Bar
Auxiliary Door Master Door
(Single Door)
Locking
Bar
Door
Opening
Type M8 Type M1 Type M7 Type M2
C
B
NOTE: A - Interlocking lever extension of the
flange-mounted handle mechanism.
NOTE: B - Actual enclosure opening—not door
height.
NOTE: C - Screwdriver interlock assembly can
be ordered separately. Class 9423 Type
CEQ2493.
NOTE: All mechanisms listed on this page are suitable for either left or right hand
mounting.
Table 15.34: Door Interlocks
Type Description
Type M6 Door Closing
Mechanism
The Class 9423 Type M6 door closing mechanism is designed to close and seal 0.75 in.
deep doors of single or multi-door NEMA Type 12 enclosures. The Type M6 can be used
on doors hinged on either the left or right hand side. Recommended door openings are
from 40–60 in. Vault type handle length is 6 in.
Type M660 Locking Bar
Kits
The lock bar kit for the Type M6 door closing mechanism contains two lock bars and is
available from stock. The bars can be cut to fit door openings through 60 in. One lock bar
kit is required for each Type M6 ordered.
Type M5
The Class 9423 Type M5 mechanical interlock kit is designed to interlock a Class 9422
handle mechanism with the Type M6 door closing mechanism. This kit prevents the
opening of 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 at any
time, regardless of the disconnect handle position.
Table 15.35: Required Accessories for Auxiliary Doors
Type Description
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 in. diameter rod used to interconnect the M7 kits is furnished by
the user. If the distance between any two Type M7 kits exceeds 36 in., an additional
Type M7 kit should be installed to prevent the rod from buckling.