Siemens SCALANCE X-300 Manual page 111

19" rack mounting with standard orientation
19" rack mounting
1. Select the required rack device (R) and the 19" cabinet.
2. Fix the two mounting brackets with 4 screws each to the
sides of the housing. The maximum tightening torque for
these screws is 0.5 Nm.
CAUTION: If you install a rack device (R) with
components inserted.
The locking mechanisms of components installed in the
rack device (R) (for example the handles of media
modules or the clips on the SFP) must be closed.
See also installation of modular devices:
- Installing media modules in a slot
- Installing an SFP in an SFP media module.
4. Insert the rack device (R) in the 19" cabinet and hold the
rack device (R) at the required height. Make sure that
nothing is obstructing air from entering the ventilation
grilles.
Fit the securing screws to the two mounting brackets to
secure the rack device (R) in the 19" cabinet.
5. Connect the grounding bolts. On the SCALANCE X-
300EEC, the PE connector is on the bottom of the
device. On the SCALANCE XR-300M EEC, the PE
connector is on the rear of the device between the
power connectors.
6. Fit the connectors for the power supply.
Note that the SCALANCE X-300 is available for different
power supplies (100 to 240 V AC and 24 V DC variants).
7. Fit the remaining connectors, for example the signaling
contact.
SCALANCE X-300
Operating Instructions, 10/2010, A5E01113043-10
Installation
5.2 Installing a switch
111