Siemens SIMATIC S7 Functional Safety Manual page 134

Technical specifications
A.1 General technical specifications
ATEX approval
ATEX approval applies to DC models only. ATEX approval does not apply to Relay models.
EN 60079-0: Explosive Atmospheres - General Requirements
EN 60079-15: Electrical Apparatus for Potentially Explosive Atmospheres;
Type of protection 'nA'
II 3 G Ex nA IIC T4 or T3 Gc
Install modules in a suitable enclosure providing a minimum degree of protection of IP54
according to EN 60529 or a location providing an equivalent degree of protection.
Attached cables and conductors shall be rated for the actual temperature measured under
rated conditions.
Modules shall be protected from overvoltage according to the "Safe functional extra low
voltage requirement (power supplies and other system components)" (Page 90), "Surge
immunity" section.
C-Tick approval
The S7-1200 automation system satisfies requirements of standards to AS/NZS CISPR16
(Class A).
Korea Certification
The S7-1200 automation system satisfies the requirements of the Korean Certification (KC
Mark). It has been defined as Class A Equipment and is intended for industrial applications
and has not been considered for home use.
Eurasian Customs Union approval (Belarus, Kazakhstan, Russian Federation)
EAC (Eurasion Conformity): Declaration of Conformity according to Technical Regulation of
Customs Union (TR CU)
Maritime approval
The S7-1200 products are periodically submitted for special agency approvals related to
specific markets and applications. Consult your local Siemens representative if you need
additional information related to the latest listing of exact approvals by part number.
Classification societies:
● ABS (American Bureau of Shipping)
● BV (Bureau Veritas)
● DNV (Det Norske Veritas)
● GL (Germanischer Lloyd)
● LRS (Lloyds Register of Shipping)
● Class NK (Nippon Kaiji Kyokai)
● Korean Register of Shipping
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S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA