Assembly 
  4.4 Installation on a standard rail 
SCALANCE X-100 
Operating Instructions, 12/2016, A2B00060666-08 
31 
 
Figure 4-2  Removal from a 35 mm DIN rail  
 
Installation on a standard rail 
Installation on a SIMATIC S7-300 standard rail 
To install the device on an S7-300 standard rail, follow the steps below: 
1.  Place the first housing guide of the device on the top edge of the S7-300 standard rail. 
2.  Screw the device to the underside of the standard rail (tightening torque 2 Nm). 
3.  Fit the connectors for the power supply. See also section "Power supply (Page 37)".