5TT5910-7

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The insta contactors are the ideal switching device for controlling AC/DC control voltage in industrial applications and infrastructure.

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 0 Insta contactors meet the requirements of EN 60947 and are approved to UL 508.

The switching of lamp loads that are at varying phases, but switched simultaneously, can be realized with one single contactor, whereby it is essential to strive for/ensure a symmetrical load of the phases. Upstream short-circuit detection must disconnect at all poles or must be equipped with phase failure detection. Violations of the specified capacitor load limits may cause excessive inrush peak currents. The level of inrush peak currents is also affected by the following factors:

• Length and cross-section of the installed supply lines
• Type of electronic ballasts
• Brand/make of lamp