
121022 v1.02-RiA
Operating instructions SG-RS 309-2
Page 11/23
Installation
1. Fix the control unit in any position on a 35°mm mounting rail acc. to
IEC 60715.
Installation
For your own safety, you must also adhere to the following rules during
installation:
•
Disconnect from the power supply all devices and live parts that are located in
the immediate vicinity.
•
Secure them to prevent them being switched back on.
•
Check that they are de-energised.
Caution Impaired operation due to overheating
If the control unit overheats as a result of external heat, operation of the pro-
tective device may be impaired or it may fail completely.
Ä
It is absolutely essential to ensure sufficient clearance from heat sources
(at least 2 cm).