Siemens SIMATIC S7-400 Configuration And Use Manual page 109

or cULus Approvals, Hazardous Location for Relay Modules
CULUS Listed 7RA9 INT. CONT. EQ. FOR HAZ. LOC.
Underwriters Laboratories Inc. according to
S UL 508 (Industrial Control Equipment)
HAZ. LOC.
S CSA C22.2 No. 142 (Process Control Equipment)
S UL 1604 (Hazardous Location)
S CSA-213 (Hazardous Location)
APPROVED for Use in
S Cl. 1, Div. 2, GP. A, B, C, D T4A
S Cl. 1, Zone 2, AEx nC IIC T4
S Cl. 1, Zone 2, Ex nC IIC T4
Please read the notes below.
Warning
This plant has to be mounted according to the NEC (National Electric Code)
stipulations.
When used in environments according to class I, division 2 (see above) , S7-400
must be mounted in an enclosure that corresponds to at least IP54 according to
EN 60529.
FM Approval
Factory Mutual Approval Standard Class Number 3611, Class I, Division 2, Group
A, B, C, D.
Temperature class: T4 at 60 °C ambient temperature
Warning
!
Personal injury and property damage can occur.
In hazardous areas, personal injury or property damage can result if you create or
break an electrical circuit during operation of an S7-400 (for example, by means of
plug-in connections, fuses, switches).
Do not create or break live electric circuits unless you are certain there is no
danger of explosion.
If you use S7-400 under FM conditions, it has to be mounted in an enclosure,
which at least corresponds to IP54 in accordance with EN 60529.
Automation System S7-400 Configuration and Use
A5E00442711-02
Standards, Certificates and Approvals
9-5