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Note
Installation of 100 to 240 V AC / 110 to 250 V DC devices
The operation of 100 to 240 V AC / 110 to 250 V DC devices connected to the power supply via
one or two DC terminal blocks is only permitted inside a control cabinet.
Installation clearances
Adhere to the following minimum clearances so that the convection ventilation of the
devices is not blocked:
• At least 1 height unit (43.6 mm) below
• At least 1 height unit (43.6 mm) above
Installation position
Only the following installation position is permitted for all installation types of the devices:
• Horizontal
The horizontal installation position is shown using the example of a control cabinet.
Figure 5-1
Note
Other installation positions are not permitted.
SCALANCE XR-300
Operating Instructions, 03/2023, C79000-G8976-C586-02
Horizontal installation position of devices in a control cabinet
Installing and removing
5.2 Types of installation
47
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