80459-641-01E Model 6 Motor Control Centers
10/2012 Section 10—Expansion
© 1999–2012 Schneider Electric All Rights Reserved
95
ENGLISH
Installing Additional MCC Units 1. Turn off all power supplying this equipment before working on or inside
the equipment, and follow lockout/tagout procedures. Always use a
properly rated voltage sensing device to confirm the power is off.
2. Position the midshelf (Figure 115, Item A) in the appropriate area of the
structure.
NOTE: Arc-rated MCCs have a midshelf specifically designed for
arc-rated MCCs (Schneider Electric part no. 80466-007-50; see
Figure 116 on page 95). This midshelf includes arc pressure relief flaps
and must be used when installing arc-rated MCC units to maintain the
arc containment ratings.
Figure 115: Shelf and Door Installation
Table 16: Shelf Installation Kit
Parts
Description Qty
Assemble
per
Item
Shelf 2
➀
Steps 2 and 3 A
Flat head screws 4 Step 3 D
Unit door 1 Step 4 F
Hex head screws 4
➁
Steps 4 and 5 H
Quarter turn
fastener receptacle
2
➁
Step 5 J
➀ Shelves are furnished with order. Structure may
already have shelf mounted in position.
➁ All necessary hardware for typical shelf
installation is included. Door installation may
require additional hardware.
A
B
C
D
F
F
E
G
D
H
J
H
K
F
See Detail A
Detail A
See Detail
A or B
See Detail B
Detail B
Figure 116: Midshelf for Arc-Rated MCCs
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