Siemens SCALANCE W788-1PRO Operating Instructions (Compact page 118

Certification
6.1 Approvals for the SCALANCE W788-xPRO/RR and 74x-1PRO/RR
ATEX, cULus and FM approvals
The products
SIMATIC NET SCALANCE W788-1PRO
SIMATIC NET SCALANCE W788-2PRO
SIMATIC NET SCALANCE W788-1RR
SIMATIC NET SCALANCE W788-2RR
SIMATIC NET SCALANCE W744-1PRO
SIMATIC NET SCALANCE W746-1PRO
SIMATIC NET SCALANCE W747-1RR
have the following approvals
● EN50021
● UL 60950-1
● FM Hazardous (Classified) Location Electrical Equipment:
Non Incendive / Class I / Division 2 / Groups A,B,C,D / T* and
Non Incendive / Class I / Zone 2 / Group IIC / T*
(T* = you will find concrete information on the temperature class on the type plate)
WARNING
When used under hazardous conditions (Zone 2), the SCALANCE W788-xPRO/RR or
W74x-1PRO/RR product must be installed in an enclosure. To comply with EN 50021, this
enclosure must meet the requirements of at least IP 54 in compliance with EN 60529.
DO NOT DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR COMBUSTIBLE
ATMOSPHERE IS PRESENT.
Note
The specified approvals apply only when the corresponding mark is printed on the product.
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SCALANCE W788-xPRO/RR / SCALANCE W74x-1PRO/RR
Operating Instructions (Compact), Release 08/2007, A5E00413342-05