Page 6/25 Rev.1.1 User Manual, Power contactors, series CT1115/04 and CT1130/04
Safety information
Electrical hazards
Safety notices
General application
notes
Before carrying out any inspection and maintenance work on
CT1000 contactors, the contactors must be de-energized and
in addition life wires made safe by earthing. If the environ-
ment has no disconnecting and earthing device, other suita-
ble measures must be used to ensure that no voltage is pre-
sent. Please make sure that any capacitors in the main circuit
are discharged before touching main wires. We recommend
securing the supply lines to prevent switching back on.
The 2 black protection caps must not be removed for opera-
tion. They are part of the insulation system. Operation without
the 2 black protection caps is not permissible.
All inspections and the replacement of components may only
be performed by qualified personnel and must be done ac-
cording to Schaltbau specification.
All components which have to be replaced must be original
components defined by Schaltbau.
During continuous operation the contactors will warm up. It is
recommended to wait an appropriate time before starting any
service and touch the contactors.
CT1000 contactors are high-voltage switches. Getting into
contact with conductive parts of the contactors can result in
serious injury or even death!
Active parts are all piece parts associated with the main cir-
cuit. All metal parts visible may potentially become active un-
der fault conditions. A respective label is attached to the con-
tactor. This label must not be removed.
For safety reasons the contactors must be connected to
earth. An earth terminal is provided for that purpose. The wire
gauge must be observed according to the specific short-
circuit conditions.
CT1000 contactors are designed to be mounted in environ-
ments defined by pollution degree PD3 according to
EN60077-1:
Pollution degree PD3
Conductive pollution or dry non-conductive pollution occurs
which becomes conductive due to condensation which is to
be expected.
Example: Indoor location not directly exposed to rain, snow
and heavy dust.
CT1000 contactors contain strong magnets for the perma-
nent-magnetic blow-out. Make sure that these magnets do
not attract any ferromagnetic particles into the contactors, ei-
ther opened or closed.
These magnets may destroy data on credit cards or such.
During the short time of the switching-off operation strong
magnetic fields are generated in the vicinity of the pole plates.
They may affect other components close to the contactor.
