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BETA Switching
Switching Devices
5
TT5 7 Insta contactors, DC technology
8/14
Siemens ET B1 · 10/2008
8
*
You can order this quantity or a multiple thereof.
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Overview
Insta contactors are standard devices in installation technology
and belong to the BETA switching device range. Insta contactors
are particularly suitable for switching heating, lighting and motors.
While Insta contactors have seen a considerable decline in use
in the electrical heating sector in residential buildings, they are
playing an increasingly significant role in building lighting cir-
cuits. Insta contactors are also increasingly used in industry for
motors where distribution technology plays a major role, e.g. in
auxiliary installations for heat pumps and air conditioning
technology.
In addition to their basic function, they can also be used to switch
single-phase and three-phase electrical motors on and off.
The 5TT5 7 Insta contactors meet the requirements of EN 60947
and are approved to UL 508.
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Benefits
•
DC magnetic system for silent operation.
They are therefore especially suited for applications in resi-
dential buildings.
•
Safe cable routing by cable entry funnel – saves time during
installation.
•
The insulation goes right through into the cable entry funnel -
therefore maximum touch protection.
•
Switching position indicator for fast recognition of operating
state offers greater safety when checking the plant.
© Siemens AG 2008