• Tel: +39 035 451161
  • Tel: +1 336 659 3400


Series code: SW

Back to list

Series details

Heavy-duty limit switch boxes, designed for hazardous areas, provide a visual and electrical remote position feedback on automated valves.

Available in 316 stainless steel, the explosion proof enclosure matches the Ex d IIC T6 standards. The SW limit switch box serie, thanks to its large inner volume able to host up to 6 switches and spare pass through terminals and the four cable entries either metrics or imperial, provide a highly customizable solution meeting a wide range of applications. These including, but not limited to, the Oil and Gas, both onshore and off shore, and Petrochemical industries.


  • Twin shaft design, ensuring a complete sealed device: the shaft is splitted in two parts, each fitted and sealed into the body and cover for the best weather insulation even during opening operation.
  • Suitable for artic application, down to -60°C
  • Enhanced flexibility of electrical feedbacks options.
  • Up to four cable entries available in different sizes.
  • 316 stainless steel housing for extremely hostile and corrosive environments
  • Easy wiring through the terminal PCB board
  • NOVA V3 switch option ensures extreme durability and high power switching capabilities
  • 4-20 mA position transmitter options
  • Single tool opening design, allowing the operator to unscrew the lid by hand after removing the locker

Download the Soldo Product Overview brochure 

Product Description

Technical Data:


  • AISI 316 Stainless steel body and cover with electro-polished finishing
  • Stainless steel fasteners and shafts



Ex II 2GD  Ex d IIC T4/T5/T6 Gb

Ex tb IIIC T140/T110/T110°C Db

Ta:  -60°C≤Ta≤105°C/80°C/60°C


Class I Division 1 Groups B,C,D  Division 2 Groups A,B,C,D

Class II  Division 1 Groups E,F,G  Division 2 Groups F,G

SIL certificate:

Up to SIL 3 certified by TUV

Protection rating:

IP 66 / 68 up to 10 meters for 48 hours

Cable entries options:

Up to four cable entries, metric and imperial sizes


Standard operating temperature -20°C +80°C Lower and higher temperature options available on request.