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2021-07-15 / V1.0
Contactors C320K/C320S – Installation and Maintenance Manual
Installation
Mounting positions
The contactors are designed for horizontal or vertical
mounting. Examples of correct mounting positions are
presented in
Fig. 3/A
and
Fig. 4/A
. Incorrect mount-
ing positions are shown in
Fig. 3/B
and
Fig. 4/B.
These
mounting positions
(B)
are not permitted!
A
B
A
A
B
B
Fig. 3:
C320K: Examples of correct mounting positions (A)
and incorrect mounting positions (B).
A
B
A
A
B
B
Fig. 4:
C320S: Examples of correct mounting positions (A)
and incorrect mounting positions (B).
Required minimum clearances
X
Switching of high voltage currents produces elec-
tric arcs and it is possible that plasma will escape
from the openings of the arcing chambers. There-
fore, it is extremely important to maintain the
minimum clearances to ground/earth and the bus
bars to avoid flashovers.
Minimum clearances for type C320K contactors
A minimum clearance from magnetic or magnetised
parts is required on all sides and above for type C320K
contactors. See
C320 catalogue
.
Fig. 5:
C320K: Minimum clearance required from magnetic
and earthed components. Clearances see
C320 cata-
logue
.
Minimum clearances for type C320S contactors
A minimum clearance from magnetic or magnetised
parts is required on all sides and above for type C320S
contactors. See
C320 catalogue
.
Fig. 6:
C320S: Minimum clearance required from magnetic
and earthed components. Clearances see C320 cata-
logue.
