ATEX and IECEx Switch Disconnectors

ATEX-Switches-02New switch disconnectors Regolus Ex for command and emergency in aluminum box painted in Grey RAL 7035 and Yellow PANTONE 102C, suitable for use in ZONE 21 and 22 (D) with rated current of 25-32-40-63A.
Standard Reference: EN 80079-34, EN 60947-3, EN 61241-0, EN60079-0, EN60079-31 Directive: ATEX 2014/34/EU.
The ATEX mark (ATmospheres EXplosives) refers to two European directives concerning the risk of de theflagration in potentially explosive atmospheres.
 
 
 
 
AREA CLASSIFICATION “Dust”
Zone 21: area in which an explosive atmosphere in the form of a cloud of combustible dust in air is likely to
occur occasionally in normal operation.
Zone 22: area in which an explosive atmosphere in the form of a cloud of combustible dust in air is not likely to
occur in normal operation but, if it does occur, will persist for a short period only.

TYPE OF PROTECTION:
Protection by enclosures (Ex “tb”)
Marking Ex ta/tb/tc Da/Db/Dc II 1/2/3 D in accordance with IEC 60079-0; 60079-31

Principle:
The enclosure is sealed so tight, that no combustible dust can enter. The surface temperature of the external enclosure is limited.

Important design parameters:
• Minimum degree of protection in accordance with IEC/EN 60529 ≥ IP 6X
• Consideration of dust accumulating on the surface and reduction of permissible surface temperature with dust layer ≥ 5mm are possible

Applications:
• Various equipment where during normal operation sparks, electric arcs or hot surfaces occur and complex industrial designs (controllers) which by means of this type of protection can be utilized in the potentially explosive atmosphere.


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