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2019-03-06 / V1.0
Contactors CT/CU Series – Installation and Maintenance Instructions
Installation
9. Installation
9.1 Dimensions/interfaces to the
vehicle
The dimensions to the interfaces of the vehicle and fur-
ther technical specications are given in the respective
data sheets or in our catalogues. Refer to our catalogues
C20.en and C21.en.
The catalogues are available under:
https://www.schaltbau.com/en/media-library/
9.2 Mechanical installation
Preliminaries
X
Observe the minimum clearance of live parts to
the arc chute! Refer to the dimension drawings in
our catalogues C20.en (for single pole contactors)
and C21.en (for double pole contactors).
X
An appropriate mounting frame or a mounting
plate has to be provided for the fastening of the
contactor. The mounting frame or plate must be
solid enough to carry the weight of the contactor
under the shock and vibration conditions.
X
4 mounting holes have to be provided at the
mounting frame or plate. See also section “Mount-
ing holes”.
X
The mounting holes can either be
- threaded holes (for threaded screws)
- or through holes (for threaded screws and nuts).
X
The lower module of the contactor is xed with
4 mounting screws, see also section “Mounting
holes”.
The mounting screws (and if applicable the nuts)
must be steel grade 8.8 or higher.
The size of the mounting screws depends on the
contactor type and is shown in the following table:
Contactor type CT/CU Mounting
screw size
Single pole
contactors
1115/04 1130/04 M6
1115/08 1130/08 M8
1115/10/11 1130/10/11 M8
Double pole
contactors
1215/04 1230/04 M10
1215/08 1230/08 M10
1215/10/11 1230/10/11 M10
X
In order to secure the mounting screws against
self-loosening, appropriate screw locking ele-
ments have to be provided. Schaltbau strongly
recommends Schnorr-Washers (or similar) to se-
cure the screws.
X
The tightening torque and the length of the xing
screws have to be determined by the manufactur-
er of the vehicle according to the constructional
conditions, e. g. the rated torque permissible for
the used screws (and if applicable the nuts).
Safety
X
The installation has to be carried out by qualied
trained personnel.
X
The switching device meets the requirements
of basic insulation. Make sure that the mounting
frame or mounting plate onto which the drive of
the contactor is mounted is earthed in a vibration
resistant way.
NOTICE
During installation, ensure that dirt caused by sur-
rounding construction activities does not get into
the contactor.
NOTICE
Detent-edged rings and detent-edged washers have
a limited life time. After 3 times opening of screws
secured with detent-edged rings or detent-edged
washers, the rings or washers must be replaced by
new ones.
X
Record the frequency of screw opening in the
work log.
X
After 3 times opening of screws, replace detent-
edged rings or detent-edged washers by new
ones.
Required tools and auxiliaries
- Set of slotted screwdrivers
- Socket wrench set
- Hexagon socket wrench set
- Torque wrench
- Open-end wrench set
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