ATEX-Approved Products

Explosion Proof Push Button

Explosion-Proof Push Button

The WH - WP operators and WA instruments are normally used in the chemical and petrochemical plants, off-shore platforms, refineries and any other industry where hazardous atmospheres (gas and combustible dust) are potentially present.

The WH - WP - WA range of explosion-proof push buttons has been designed to meet the main requirements of power distribution, monitoring and signaling, and other electrical functions inside the hazardous area of the plant.

Unit Price:

Customers can still purchase even if there is no stocks available

Unit Of Measurement (UOM):

The material used to manufacture the UH-UP operators and WA instruments have been studied to grant the maximum protection against the highly corrosive agents present in these industries:

  • the external components (handle, push-button, diffuser, ect.) are made of high-quality antistatic and UV-protected polymers and provided with EPDM sealing to mantain the IP66 level of protection of whole control station;
  • the internal Ex d components are made of high quality thermoplastic and are available for standard installation on cover or, as option, on a dedicated mounting rail;

Product
code

Colour codeContact code
DescriptionDescriptionDescription
WPB Spring-return flush push button unit B Blue 0 NO + NC
WPBD Spring-return double push button unit G Green 1 2 NC
WPBM Spring-return mushroom push button unit R Red 2 2 NO
WPBEP Push-pull emergency push button unit W White
WPBEK Key to release emergency push button unit X Black
Y Yellow

The WH - WP - WA series are normally installed on CSE enclosures series used for the following main applications:

  • control station and instrument housing
  • motor starter unit
  • instrument housing
  • lighting control panel

and fitted with other electrical and/or electronic equipment as per our client specific requirements.

The material used to manufacture the UH-UP operators and WA instruments have been studied to grant the maximum protection against the highly corrosive agents present in these industries:

  • the external components (handle, push-button, diffuser, ect.) are made of high-quality antistatic and UV-protected polymers and provided with EPDM sealing to mantain the IP66 level of protection of whole control station;
  • the internal Ex d components are made of high quality thermoplastic and are available for standard installation on cover or, as option, on a dedicated mounting rail;
  • the larger handles are padlockable in different positions (upon request)
  • the LED units for pilot light and luminaire push button are available with two range of voltage as indicated in the ordering table;
  • the rated current of Ex switch module is up to 16 Amp. and its mechanical life is 1,000,000 times;
  • the high brightness and the electrical life of LED units are granted for a minimum of 100,000 hours;
  • the diffuser of pilot lights and luminaire push button units have a special design to grant a high visibility degree in any situation
  • the external components are fixed directly on cover with a Ø 30 mm. hubs and a directional anchor point depending by type of installation requested.

certificate number: ATEX & IECEx certificates available TC RU C-IT.AA87.B.00509
marking: Ex-proof Logo II 2GD Ex d e mb IIC T6 Gb Ex tb IIIC T85°C Db (control stations)
ambient temperature: –55°C +60°C
degree of protection: IP66
conformity: Directive ATEX 2014/34/EU TP TC 012/2011
standards: IEC-EN60079-0 IEC-EN60079-1 IEC-EN60079-7
ГОСТ 31610.0 ГОСТ IEC 60079-1 ГОСТ Р МЭК 60079-7
IEC-EN60079-11 IEC-EN 60079-18 IEC-EN60079-31
ГОСТ 31610.11 ГОСТ Р МЭК 60079-18 ГОСТ Р МЭК 60079-31
category: suitable for Zone 1 - 21 (gas) and Zone 2 - 22 (dust)

WPB Spring-return flush pushbutton unit, supplied complete with one electrical contact module as listed and as option, with different combinations of contacts NO and NC.

WPBD Spring-return double pushbutton, supplied complete with one electrical contact module as listed and as option, with different combinations of contacts NO and NC.

WPBM Spring-return mushroom pushbutton unit, supplied complete with one electrical contact module as listed.

WPBEP Push-pull emergency pushbutton unit, supplied complete with one electrical contact module as listed.

WPBEK Key to release emergency pushbutton unit, supplied complete with one electrical contact module as listed.