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IB01602002E
Page 4
Effective 10/02
Positions 1-2
Position 3
Position 4
Positions 5-6
Switching Device
Configuration
Orientation
Control Panel
Switching Device
Closed Transition Automatic
Transfer Switch
CT
Vertical
V
ATC-800
I
SPB
Systems Power Breaker
SP
Position 7
Position 8
Positions 9-12
Position 13
Position 14
Position 15
Switching Device
Number
Ampere
Voltage/
Enclosure
Arrangement
of Poles
Rating
Frequency
Type
Listing
Fixed Mount Insulated Case
A
Two
2
0600
120VAC/60Hz
A
No Enclosure
K
UL Listed
U
Switches both Power Sources
0800
208VAC/60Hz
B
Type 1
S
Three
3
1000
600VAC/60Hz
E
Type 3R
R
Fixed Mount Insulated Case
B
1200
220VAC/50 or 60Hz
G
Type 4*
L
Breakers both Power Sources
Four
4
1600
380VAC/50Hz
H
Type 4X*
D
2000
600VAC/50Hz
K
Type 12*
J
Fixed Mount Insutated Case
C
2500
230VAC/50Hz
M
Breaker Normal Power Source,
3000
401VAC/50Hz
N
Insulated Case Switch
4000
415VAC/50Hz
O
Emergency Power Source
240VAC/60Hz
W
480VAC/60Hz
X
Fixed Mount Insulated Case
D
365VAC/50Hz
Z
Switch Normal Power Source,
Insulated Case Breaker
Emergency Power Source
Table 1.2 Transfer Switch Catalog Number Explanation
1.3 TRANSFER SWITCH CATALOG NUMBER
IDENTIFICATION
Transfer switch equipment catalog numbers provide a
significant amount of relevant information that pertains
to a particular piece of equipment. The catalog number
identification table (Table 1.2) provides the required
interpretation information for both closed and open tran-
sition switches. An example for an open transition
switch is offered initially to simplify the process.
Example: Catalog number (circled numbers correspond
to position headings in Table 1.2). The catalog number
ATVISPA31000XSU describes an open transition auto-
matic transfer switch with the switching devices mount-
ed vertically in the enclosure. The intelligence repre-
sented by the ATC-600 is a microprocessor-based logic
package. The System Power Breaker (SPB) is used as
the switching device and is a 3-pole insulated case
switch for each source. The continuous current rating of
this equipment is 1000 amperes and applicable at 480
VAC, 60Hz. The transfer switch equipment is enclosed
in a NEMA 1 enclosure and is UL listed.
➀
to
➁ ➂ ➃ ➄
to
➅ ➆ ➇
➈
to
➉
AT V
I
SP
A 3 1000 X S U
12
13
14
15
* Available only on units rated 600 through 1200A without Option 17C
Positions 1-2
Position 3
Position 4
Positions 5-6
Switching Device
Configuration
Orientation
Control Panel
Switching Device
Automatic Transfer Switch
AT
Vertical
V
ATC-600
I
SPB
Systems Power Breaker
SP
Non-Automatic Transfer Switch
NT
Vertical
V
ATC-600
I
(Electrically Operated)
Basic Transfer Switch PP
Vertical
V
No Logic
X
(Power Panel Only)
NOTE: Positions 7 through 15 below apply to both Closed Transition and Open Transition Switch catalog numbers.
NOTE: Positions 1 through 6 below apply to Open Transition Switch catalog numbers only.
NOTE: Positions 1 through 6 below apply to Closed Transition Switch catalog numbers only.
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