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10
431A - Toshiba Auxiliary Cabinet
5
4
6
13
431A - Assembled
10.1
4300 Auxiliary Cabinet Transformer Options
(All cabinets are O'Brien Black (Textured))
Xfmr Cabinet
Transformer
Part Number*
Rating
431A-
300 – 30 kVA
500 – 50 kVA
Example: 431A500S3K is a 50kVA, three-phase transformer cabinet with a 480V to 208/120V input trans-
former, and a 208/120 V to 480/277 V output transformer.
24
No.
1
1
Fan Module (Hot
Swappable)
2
Toshiba Label
3
Air Filter Grill Thumb
Screws
2
4
Air Filter Grill
(Front Accessible)
5
Top Cable Access
Plate
6
Side Cable Access
Plates
3
7
Bottom Cable Access
Plate
8
TB-2
9
TB-1
10
Ground Bus
11
Input Transformer
12
Output transformer
13
Forklift Lifting Points
Figure 10-1 - 431A Component
Identification
Input Transformer(s) Primary
and Secondary Line Voltage IN,
208/120 V OUT
Where line voltage is :
B – 208 V (Δ)
C – 240 V (Δ)
M – 600 V (Δ)
N – 380/400/415 V (Δ) (multi-tap)
S – 480 V (Δ)
X – 208/120 V (Y) (No Transformer)
4300 Series Ancillary Cabinets Installation and Operation Manual
Part
5
6
10
431A - Front Panels and
Dead Fronts Removed
# of
Output Transformer
Φ
208/120 V IN, Load Voltage OUT
3
Where load voltage is :
H – 220/127 V (Y)
J – 240/138 V (Y)
K – 480/277 V (Y)
M – 600/347 V (Y)
P – 380/220 V (Y)
Q – 400/230 V (Y)
X – 208/120 V (Y) (No Transformer)
1
8
9
12
11
6
7
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