TP-5672 11/95
Specifications 1-3
Interpreting a Transfer Switch Part Number
Record the transfer switch part number in the boxes below. The transfer switch part number defines
characteristics and ratings as explained in the accompanying chart.
Type of Switch Type of Logic Voltage & Frequency
Number of
Poles
Number of
Wires
Type of
Enclosure
Amperage Rating Code
Kohler Part Number Key
This chart explains the Kohler transfer switch part numbering code system. The
sample part number shown is for a standard molded-case switch with M340+ logic
rated at 480 volts, 60 hertz, 3-phase, 3-pole, and 4 wires in a NEMA 1 enclosure with
an amperage rating of 80 amperes.
SAMPLE PART NUMBER
Classification of Power Switch
M: Switch or Circuit Breaker
T: Electrically & Mechanically Held
Z: Contactor Style
Type of Power Switch
C: Contactor
E: Electrically Held Contactor
L: Mechanically Held Contactor
M: Molded-Case Circuit Breaker
N: Molded-Case Switch (no protection)
Type of Switch
S: Standard
B: Bypass
Type of Logic
5: M340+
6: M340+ with programmed transition
Voltage Code
60: 600 Volt, 60 Hz
66: 480 Volt, 60 Hz
62: 120 Volt, 60 Hz
68: 208 Volt, 60 Hz
63: 220 Volt, 50 Hz
71: 380 Volt, 50/60 Hz
64: 240 Volt, 60 Hz
Number of Poles
2: 2 pole, 1 phase (MM_, MN_, TE_, TL_, devices
will be supplied with 3 poles)
3: 3 pole, 3 phase
6: 4 pole, fully rated switched poles
(no overlapping neutral)
Number of Wires
2: 2 wire
3: 3 wire
4: 4 wire
Enclosure
1: NEMA type 1
Amperes
Available sizes vary with the type of switch.
MNS-566341-0080
Figure 1-4. Transfer Switch Model Description
