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BETA Switching
Switching Devices
5
TT5 8 Insta contactors, AC technology
8/20
Siemens ET B1 · 10/2008
8
*
You can order this quantity or a multiple thereof.
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Overview
The 5TT5 8 Insta contactors are equipped with an AC magnetic
system and are ideal for use under harsh conditions. The auxiliary
switches can be mounted without tools. When used with terminal
covers, the devices are also sealable.
Insta contactors without manual switch
They are playing an increasingly significant role in lighting circuits
in buildings. Insta contactors are increasingly used in industry
for motors where distribution technology plays a major role, e.g.
in 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.
Insta contactors with manual switch
A key feature of Insta contactors with manual operation is the
fact that users can switch consumers/loads on and off by hand.
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Benefits
•
Extremely long service life of 3 million switching cycles is a
testimony to their reliability
•
Switching position indicator for fast recognition of operating
state offers greater safety when checking the plant.
•
Safe insertion of conductor through cable entry funnel – saves
time during installation
•
Insulated right through to the cable entry funnel. This provides
enhanced touch protection
•
Auxiliary switches can be retrofitted on all versions
–
even on
the type 20 A. More functionality when using the devices.
•
Insta contactors with O/I/Automatic function enable the testing
of a plant by manual switch without the need to apply a control
voltage.
© Siemens AG 2008