Nameplate and Catalog Number Identification
The Transfer Switch nameplate includes data for each specific ASCO Series 300 ATS. Use the ATS only within the limits shown on this nameplate. A typical Catalog Number is shown below with its elements explained.
The example is for a Series 300 ATS with switched neutral, 3 pole, 400 ampere, 480 V, in a Type 1 enclosure:
E 300 | C | 3 | 400 | N | 1 | C |
transfer switch prefix letter
Neutral
C – overlapping
blank – solid
Phase Poles
2 – single Ø
3 – three Ø
Amperes
260
400
Voltage
A 115 | J 400 |
B 120 | K 415 |
C 208 | L 440 |
D 220 | M 460 |
E 230 | N 480 |
F 240 | Q 575 |
H 380 | R 600 |
|
|
Controller
1 – standard
1X – if accessories ordered
Enclosure
C – type 1 F – type 3R G – type 4 L – type 12 blank – open type
load power connections
emergency power connections
terminals for engine start contacts
Transfer
Switch
membrane controls
Controller
terminals for
switch position
contacts
normal power connections
400 ampere size in typical enclosure with location of customer connections