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i Catalog Number 381333-395
Catalog Number Identification
A typical Catalog Number is shown below with its elements explained. The example is for a 7000
Series Automatic Transfer Switch, class A interrupting rating, automatic, open-transition transfer, dual-
circuit breaker, 3 pole, 1200 ampere, 6.6 kV 60 Hz, in a Type 1 enclosure.
Typical 7000 Series MV ATS with location of major components (1200 amp shown)
A 7 A T M 0 3 1200 6 5 X C
Interrupting
Rating
A = 25 kAIC
B = 40 kAIC
C = 50 kAIC
D = 16 kAIC
Operation
Type
A = Automatic
N = Non-auto
Transition
Type
blank = Open
C = Closed
D = Delayed
S = Soft load
Construction
T = Transfer
(non-soft load)
L = Soft load
transfer
U = Service
entrance (Normal)
G = Service
entrance (Emerg)
P = Service
entrance (N & E)
Fixed elements
Catalo
g
Numbe
r
Variable
elements
Poles
3 = 3 pole
Controller
5 = Group 5
Neutral
Type
0 = None
A = Solid
Device Type
M = dual CB transfer
Amperes
1200
2000
3000
Enclosure
Type
C = 1
M = 3R
(secure)
Accessories
X = yes
Z = special
Voltage
T = 2.4 kV
U = 4.16 kV
V = 11 kV
W = 12.47 kV
X = 13.2 kV
Z = 14.4 kV
3 = 3.3 kV
6 = 6.6 kV
7 = 7.2 kV
8 = 10 kV
9 = 13.8 kV
O = Other
Product Series
7 = 7000
NOTE
Interrupting rating A (25 kAIC)
is not available for voltage
ratings below 5 kV.
Controller
Customer
terminal block
Emergency Source
Circuit Breaker
Normal Source
Circuit Breaker
Transfer Switch
(
CB SECTION
)
Controls
(
CONTROL SECTION
)
Transfer control
& lights
Emergency source
Breaker Control
switch
Normal Source
Breaker Control
switch
Transfer Switch
control
Voltage
transformer
Voltage
transformer