Schaltbau CT1130/08 - 4 Introduction; CT;CU Power Contactors for AC and DC; Features; Applications

9
2019-03-06 / V1.0
Contactors CT/CU Series – Installation and Maintenance Instructions
Introduction
4. Introduction
4.1 CT/CU Power contactors for AC
and DC
With the CT/CU contactor series Schaltbau expands its
product line of state-of-the-art power contactors. The
outstanding technical feature is the innovative com-
bination of electromagnetic and permanent-magnetic
blowout technology for electric arc control. The suc-
cessful combination of these two principles greatly im-
proves both switching functionality and reliability and
forms a practical and economically impressive device
concept.
CT contactors are devices for bidirectional DC or AC op-
eration and have electromagnetic blowout coils.
CU contactors are devices that only work in unidirec-
tional DC operation. CU contactors have permanent
magnets instead of blowout coils.
The CT/CU contactor concept is exible and can be
adapted to suit the needs of the customer. Due to its
technical characteristics, its economical advantages, its
compactness and versatility, the CT/CU power contac-
tor series is simply predestined for use in industrial and
railway applications alike. The contactors are especially
suited for use in locomotives, cranes, and converters of
wind turbines and PV installations, but also in mining.
4.2 Features
X Compact, rugged innovative design
X 2 voltage levels (1,5 kV, 3 kV)
X Double-break contacts
X 1, 2, and 3
1
pole versions
X Easy inspection and replacement of main contact
tips
X Easy to replace arc chute
X Drive system with coil tolerance according to rail-
way standards
X Functional insulation for main circuit
X Basic insulation between main circuit and protec-
tive earth
X Reinforced insulation between main circuit and
control circuit/auxiliary circuit
1 Upon request
4.3 Applications
CT/CU Series contactors comprise a number of various
design versions catering to a wide range of uses, such
as:
X Main contactor for:
Traction converters and inverters for auxiliary
equipment
X Contactor for:
Field circuits of motors, conventional resistor ba-
sed traction units (retrot), starter and compressor
motors, and heating circuits
X Contactor for a host of industrial and railway ap-
plications:
- locomotives
- cranes
- mining
4.4 Technical information and material
specication
For technical information, dimensions and material
specications, refer to our catalogues C20.en and C21.
en. The catalogues are available under:
https://www.schaltbau.com/en/media-library/