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2019-05-24 / V1.0
Installation
Contactors C137/C163/C164/C165 – Installation and Maintenance Instructions
Connect the main contacts
NOTICE
Make sure, that the connection points of the main
contacts are free from corrosion.
Main contact connection with wires
Depending on the contactor type the wires of the main
current circuit must be fitted with appropriate cable
lugs (for terminal nuts M6, M8 or M10)
X
Lay the prepared wires (3) to both main contacts
(1).
X
Make sure, that both contact bolts (1) are equipped
with washers and counter nuts (6).
X
Put the cable lugs (2) on the contact bolts (1).
X
Put the washers (4) on the contact bolts (1).
-
Schaltbau recommends Schnorr-Washers (or
similar) to secure the nuts.
X
Screw the terminal nuts (5) on the contact bolts (1).
X
Hold the counter nuts (6) using an open-end
wrench.
X
Tighten the terminal nuts (5) with the determined
torque according to the table:
Series
Terminal nuts
Torque
C137
M6
max. 3 Nm
C163
M8
max. 6 Nm
C164
M8
max. 6 Nm
C165
M10
max. 10 Nm
1
2
4
5
6
3
Fig. 26: Connect the main contacts: Example for the connec-
tion with wires (the figure shows C164, the procedure
for C137, C163 and C165 is the same)
Main contact connection with busbars
As an alternative to the connection with wires, the main
current circuit can also be connected with busbars.
Examples for the connection with busbars are shown in
Fig. 27
and
Fig. 28
.
X
Lay the busbars (7) to both main contacts (1).
X
Depending on the installation situation, use ad-
ditional angled connecting bars (8/9) if necessary.
X
Make sure, that both contact bolts (1) are equipped
with washers and counter nuts (6).
X
Put the angled connecting bars (8/9) on the con-
tact bolts (1).
X
Put the washers (4) on the contact bolts (1).
-
Schaltbau recommends Schnorr-Washers (or
similar) to secure the nuts.
X
Screw the terminal nuts (5) on the contact bolts (1).
X
Hold the counter nuts (6) using an open-end
wrench.
X
Tighten the terminal nuts (5) with the determined
torque according to the table:
Series
Terminal nuts
Torque
C137
M6
max. 3 Nm
C163
M8
max. 6 Nm
C164
M8
max. 6 Nm
C165
M10
max. 10 Nm
7
1
4
5
6
7
8
8
Fig. 27: Connect the main contacts: Example for the connec-
tion with busbars (7) and additional angled connect-
ing bar (8)(the figure shows C164, the procedure for
C137, C163 and C165 is the same)