Siemens SIRIUS 3RM1 Manual page 39

Certification of 3RM11/3RM13 Failsafe motor starters
The 3RM11 Failsafe and 3RM13 Failsafe motor starters are approved under Device
Group II, Category (2) in the area "GD" (areas in which explosive gas, steam, mist, air
mixtures and combustible dust are present):
* For the px applications, pressure and flow rate monitoring are additionally required for the
)
overpressure encapsulation systems.
Improper handling.
Can cause death, serious injury, or damage to property.
All work involved in connecting, commissioning and maintenance must be carried out by
qualified personnel.
Control cabinet degree of protection in hazardous areas
Explosion hazard in Class I and Class II Hazardous Locations.
Can cause death or serious injury.
The components of the 3RM1 motor starters are not suitable for installation in Class I and
Class II Hazardous Locations.
The device must be installed in a control cabinet with minimum degree of protection of
IP 4x.
Please contact your ATEX specialist.
In addition to the motor protection function, the 3RM1 motor starters also protect themselves
against overload. This means that in the case of 3RM1 motor starters with a rated
operational current of 7 A, an overload trip may occur in the upper current range before the
motor protection trips.
If, for example, 8-fold current flows in the case of an unloaded motor memory module and a
set current of 7 A, tripping takes place after approximately one second.
You will find the tripping characteristic in the chapter "Overload protection/device protection
characteristic (Page 145)".
SIRIUS 3RM1 motor starter
Manual, 06/2016, A5E0345285095020A/RS-AE/005
WARNING
DANGER
Description
3.5 Functions
39