Siemens 340 - Ambient Conditions; Application Environment; Ambient Temperature; Mounting Position

Configuration
4.2 Ambient conditions
SIRIUS 3RM1 motor starter
56 Manual, 11/2013, A5E0345285095020A/RS-AB/002
4.2
Ambient conditions
4.2.1
Application environment
The 3RM1 motor starters are designed for use in enclosed spaces in which no severe
operating conditions prevail (e.g. dust, caustic vapors, hazardous gases).
If they are to be installed in dusty or damp rooms, suitable control cabinets must be
provided.
Note
If you operate the 3RM1 motor starter in a control cabinet, ensure that the cabinet is
adequately ventilated.
4.2.2
Ambient temperature
The 3RM1 motor starter has been designed for use under ambient temperatures ranging
from -25 °C to +40 °C, singly in a vertical mounting position, and without a reduction in the
permissible rated operational current. With the deratings given in the section "Rated
operational current and derating (Page 51)", you can operate the 3RM1 motor starters at
ambient temperatures of up to 60 °C.
4.2.3
Mounting position
Installation on a vertical mounting surface is recommended for the 3RM1 motor starter.
Please observe the power reduction levels/deratings for other mounting positions given in
the section "Rated operational current and derating (Page 51)".
For information on clearances to neighboring components, please refer to the chapter
"Technical data (Page 113)".
4.2.4
Grounding measures
No grounding measures are required for the 3RM1 motor starter.