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Product focus: control and signalling units series EFG

Product focus: control and signalling units series EFG

The control and signalling units series EFG are used to control the auxiliary circuits and represent the ideal solution for hazardous locations where the presence of gas (Group IIB) and dust mixture (IIIC) can cause an explosion.

These control and signalling units are composed of a body and a cover made of copper-free aluminium alloy, on which are mounted one or more operators of different type, such as:
Push button : max. 600V – max. 10A
Switches : max. 600V – max. 16A – max. 4poles
Incandescent lamps : max. 240V – max. 3 W
Neon lamps : max. 400V – max. 1 W
Led lamps : max. 240V – max. 1 W
In order to facilitate the installation and maintenance of the internal parts, the cover is secured to the body by hexagon socket head cap screws.
The EFG series has 2 cable entries with standardized 1 NPT thread. (one on the lower side and one on the upper side)

Type of protection II 2 GD
Ex d IIB T6/T5 Gb
Ex tb IIIC T85°C/T100°C  Db
Ambient temperature -60°C …+60°C
Degree of protection IP 66
Standards EN 60079-0 : 2009
EN 60079-1 : 2007
EN 60079-31 : 2009
IEC 60079-0 : 2011
IEC 60079-1 : 2007
IEC 60079-31 : 2008
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