15
2021-07-15 / V1.0
Contactors C320K/C320S – Installation and Maintenance Manual
Installation
7.2 Electrical connection
Electrical data and other technical
specifications
For the power consumption of the magnetic drive sys-
tem and electrical data of the auxiliary switches as well
as other technical specifications, refer to the respective
data sheets and to our
C320 catalogue
. The
C320 cata-
logue
is available under:
https://www.schaltbau.com/media/C320_en.pdf
Preparatory measures
X
Connection of the main power circuit can be im-
plemented with wires or busbars.
X
The minimum conductor cross-sections for the
main terminal connection must be observed.
X
If connecting wires are used, they must be select-
ed taking into consideration the insulation class
and the ambient conditions.
X
The minimum conductor cross-sections for the
connecting wires are given in our
C320 catalogue
and must be adhered to.
The
C320 catalogue
is available under:
https://www.schaltbau.com/media/C320_en.pdf
X
The connecting wires of the main power circuit
must be fitted with appropriate ring terminals (for
M8 terminal screws).
X
Schaltbau recommends Schnorr washers (or simi-
lar) to prevent the terminal screws from coming
loose.
X
The main terminal screws must be tightened to a
torque of 10 ... 12 Nm.
X
The connections for the auxiliary switches are
made with flat plugs. Consequently, the control
wires must be equipped with corresponding flat
receptacles 6.3 x 0.8 mm.
X
The maximum permissible conductor cross-
section of the auxiliary switch control wires is
1.5 mm
2
/ AWG 16 stranded wire.
X
A cage clamp terminal block is provided for the
coil control wires. The control wires for the coil
connection must be stripped accordingly (if nec-
essary, fit with appropriate wire end sleeves):
-
conductor cross-section
0.5 ... 1.5 mm
2
with sleeve
0.5 ... 2.5 mm
2
without sleeve
-
stripping length: 8 ... 9 mm
X
For the power consumption of the coil drive sys-
tem and the electrical data of the auxiliary switch-
es refer to our catalogues:
-
C320 (Catalogue C320 series devices)
-
D70 (Catalogue auxiliary switches S870)
