User Manual
14
AUTOMATIC 
TRANSFER SWITCHES
KOHLER offers a new normal/emergency switch for equipment rated from 35 to 160A: VERSO. For equipment with higher 
ratings, the existing normal/emergency switch coupled to a new version of the TSI module is still available.
VERSO is not only a changeover switch but it also features integrated mains 
detection and enables automatic start-up and operation of the generating set in 
the event of a mains power cut.
To increase the reliability and safety of our changeover system, VERSO now 
enables switch changeover. This control unit uses a 4-pole system, with 
voltages from 208 to 440V. The control units are designed to enable even 
cables with large cross-sections to be easily connected. The control unit can be 
opened via the front panel and both side panels, providing easy access to the 
terminal connections. Direct access to the main setting controls means that it is 
simple to use and any possible configuration modifications can be made easily.
Switch configuration
A Three phase
B Single phase
E  Direct switching from 
  grid to generating set
F  Switching from grid 
  to generating set via 
 neutral point
G France only
H Operation
VERSO (NEW)
Dimensions
For greater protection, 
VERSO can be locked 
in the neutral position 
during maintenance 
phases, using a padlock.
This manual control 
is used to change 
over the switch in the 
event of an electrical 
control fault
35A 63A 80A 100A 125A 160A
208-440V
••••••
Height, mm 400 400 400 400 400 400
Width, mm 400 400 400 400 400 400
Depth, mm 200 200 200 200 200 200
Voltage
1st source present 
2nd source present
Fault LED
Adjustment of period of mains supply loss
Automatic operation mode
Adjustment of period of mains supply return
Nominal voltage adjustment 
Operating range adjustment (voltage/frequency)










