TT-1686 3/16
3
Model Designation
To interpret the transfer switch model designation, see
the model designation chart in Figure 7. Codes for the
model GLS, GTS, K and KB switches are combined in
the model designation chart. Some codes do not apply
to all models.
Model Designation
Model
Controls
Voltage and Frequency
Poles
Wires
Enclosure
Current Rating
Kohler
r
Model Number Key
This chart explains the Kohler
r
transfer switch model numbering code system. The sample
model number shown is for a Model K automatic transfer switch that uses a 600 volt maximum
contactor power switching device with S340 solid-state electrical controls rated at 240 volts,
60 hertz, 1 phase, 2 poles, and 3 wires in a NEMA type 1 enclosure with a current rating of 800
amps. Not all possible combinations are available.
Model
(1 to 3 letters)
GLS: Model GLS 600 volt maximum, 40--400 Amp automatic transfer switch
GTS: Model GTS 250 volt maximum, 40--200 Amp automatic transfer switch
K:
Model K automatic transfer switch
KN: Model KN non--automatic transfer switch
KB: Model KB bypass and isolation transfer switch
Electrical Controls (Logic Controller)
1: S340 controls, standard transition
Number of Poles and Phases
2: 2 pole, 1 phase
3: 3 pole, 3 phase
4: 3 pole, 1 phase
5: 3 pole, 3 phase with overlapping neutral contacts
Number of Wires
3: 3 Wire
4: 4 Wire
Enclosure
0: Open unit
1: NEMA type 1
2: NEMA type 12
3: NEMA type 3R
4: NEMA type 1 CSA*
7: Open unit CSA*
* CSA versions available only up to 2000 amperes
Current Rating
Numbers indicate the current rating of switch in amperes
K-164231-0800
Voltage and Frequency (other codes are possible)
240 VAC max:
21: 110 Volts, 50 Hz
22: 120 Volts, 60 Hz
23: 220 Volts, 50 Hz
24: 240 Volts, 60 Hz
27: 190 Volts, 50 Hz
28: 208 Volts, 60 Hz
SAMPLE MODEL NUMBER
600 VAC max:
53: 220 Volts, 60 Hz
60: 600 Volts, 60 Hz
61: 110 volts, 50 Hz
62: 120 Volts, 60 Hz
63: 220 Volts, 50 Hz
64: 240 Volts, 60 Hz
65: 550 Volts, 60 Hz
66: 480 Volts, 60 Hz
67: 190 Volts, 50Hz
68: 208 Volts, 60 Hz
69: 440 Volts, 60 Hz
70: 400 Volts, 50 Hz
71: 380 Volts, 50 Hz
72: 380 Volts, 60 Hz
73: 416 Volts, 50 Hz
Note:
Some codes do not apply to all models.
Figure 7
Model Designation Key
Summary of Contents for GLS-1
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