15
2019-08-07 / V1.0
Contactors C193/C294 – Installation and Maintenance Instructions
Installation
7.2 Electrical installation
Electrical data and further technical
specifications
For the power consumption of the magnetic drive sys-
tem and electrical data of the auxiliary switches refer to
the respective data sheets and to our
catalogues B193
and
B294.
The
catalogues
are available under:
https://www.schaltbau.com/en/media-library/
Preliminaries
X
The connection of the main current circuit can be
done with wires or busbars.
X
If wires are used, the wire gauges must be selected
in coordination with their insulation class and the
operating conditions.
X
The minimum gauges of the wires/busbars must
be observed. For the required cross sections of
wires/busbars refer to our catalogues
B193
and
B294.
The
catalogues
are available under:
https://www.schaltbau.com/en/media-library/
/
X
The wires of the main current circuit must be fit-
ted with appropriate ring cable lugs (for terminal
screws M5).
X
The main contact terminals are provided with
press nuts M5.
X
Schaltbau recommends Schnorr-Washers (or simi-
lar) to secure the terminal screws against self-loos-
ening.
The terminal screws must be tightened with the
required torque of max. 3 Nm.
X
The terminals of the coil and the auxiliary contact
are designed as flat tabs. Therefore the control
wires must be fitted with appropriate flat recep-
tacles for tabs. Depending on the series, the table
shows the type of flat receptacles.
Series
Auxiliary contact
terminals:
flat receptacles for tabs
Coil terminals:
flat receptacles
for tabs
C193
6.3 x 0.8 mm
C294
6.3 x 0.8 mm
X
The maximum permissible cross section of the
auxiliary contact control cables is 1 mm
2
/ AWG 18
stranded wire.
