Siemens SIMATIC S7-300 Información Del Producto página 13

Correction: IECEx approval
According to IEC 60079-15 (Explosive atmospheres - Part 15: Equipment protection by type of protection "n") and IEC 60079-
0 (Explosive atmospheres - Part 0: Equipment - General requirements).
Ex nA IIC Tx Gc
IECEx DEK 14.0042 X
OR
According to IEC 60079-7 (Explosive atmospheres - Part 7: Equipment protection by increased safety "e"), IEC 60079-15
(Explosive atmospheres - Part 15: Equipment protection by type of protection "n") and IEC 60079-0 (Explosive atmospheres -
Part 0: Equipment - General requirements).
Ex ec nC IIC Tx Gc
IECEx DEK 21.0030 X
Special conditions in hazardous areas:
• The equipment shall only be used in an area of not more than pollution degree 2, as defined in IEC 60664-1.
• The device must be installed in a suitable housing that ensures at least IP54 degree of protection according to IEC 60079-
0 and IEC 60529. The ambient conditions must be taken into consideration for use.
• Provisions shall be made to prevent the nominal voltage from being exceeded by transient disturbances of more than
119 V.
The following applies to SM 326; DI 8 x NAMUR:
According to IEC 60079-7 (Explosive atmospheres - Part 7: Equipment protection by increased safety "e"), IEC 60079-11
(Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i") und IEC 60079-0 (Explosive atmospheres - Part
0: Equipment - General requirements).
Ex ec [ib Gb] IIC T4 Gc
Ex ec [ib IIIC Db] IIC T4 Gc
IECEx DEK 22.0013X
Special conditions apply to SM 326; DI 8 x NAMUR in hazardous areas:
• During installation the connection box shall be used, or by using a separation wall a minimum distance of 50 mm shall be
guaranteed between the intrinsically safe and non-intrinsically safe circuits, or the connection parts shall be additionally
insulated (e.g. by heat-shrinkable tubing).
When installed in an area requiring EPL Ge, the following additionally apply:
• The equipment shall only be used in an area of not more than pollution degree 2, as defined in IEC 60664-1.
• The equipment shall be installed in a suitable enclosure that provides a degree of protection not less than IP54 in
accordance with IEC 60079-0 and IEC 60529. The ambient conditions must be taken into consideration for use.
• Provisions shall be made to prevent the nominal voltage from being exceeded by transient disturbances of more than
119 V.
Product information on fail-safe signal modules
A5E50592408-AA, 11/2022
13