User Manual, Power contactors, series CT1115/08 and CT1130/08
Rev. 2.2
Page 17/26
Mounting of the Upper
Module
Mount the Upper Module onto the Lower Module. Make sure all 4 latching
levers are in the open position. Attention: The modules are mechanically
coded. Only one mounting position is possible. Attach the Upper Module in
the correct position. Optical marks and coding pins are provided to ensure
the proper positioning. Do not try to force the Upper Module into the wrong
position!
Close the 4 latching levers and make sure that all 4 lock bars have snapped
in safely. The Upper Module must be fixed tightly to the Lower Module.
Electrical installation of
the main circuit
If you use wires for the connection of the main terminals, the cable lugs can
be placed on top of the main terminals and tightened with the appropriate
screws. Schaltbau strongly recommends Schnorr-Washers (or similar) to
secure the screws. The screws must be tightened with the rated torque (re-
fer to label on the Upper Module).
If you want to use current bars as recommended by Schaltbau (cross sec-
tion of 80 x 8 mm), it is better to mount the bars below the main terminal.
This way maintenance is much easier and the upper module can be re-
moved without removing the current bars. Schaltbau is supplying CT1000
contactors without the press nut for this purpose.
If the current bars are even slightly flexible, they can be connected to the
main terminals directly.
Make sure the connection areas are free of corrosion.
