Siemens SIRIUS 3RW44 System Manual page 76

Commissioning
5-32
Notice
Use of the 3RW44 to operate motors in hazardous areas:
The 3RW44 does not have an ATEX certificate. When an ATEX certified overload relay is
used (e.g. 3RB2 from Siemens), which affects an additional device (e.g. contactor), the
3RW44 can be installed in series to this overload relay so that the ATEX requirements are
met.
Important
The internal motor overload protection of the SIRIUS 3RW44 soft starter must be
deactivated for this kind of installation! (Set value under the menu item Motor protection/
Tripping class: "None" and Motor protection/Temperature sensor: "Deactivated")
SIRIUS 3RW44 System Manual
GWA 4NEB 535 2195-02 DS 04