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Series code: SX

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Series details

Heavy-duty limit switch boxes, dedicated to North America hazardous areas, provide a visual and electrical remote position feedback on automated valves.

Available in die cast aluminum matching Class 1 Division 1 approval requirements.

Thanks to spare pass through terminals, the three cable entries either metrics or imperial and different visual position indications, 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.
  • Enhanced flexibility of electrical feedbacks options.
  • Up to three cable entries available in different sizes.
  • Easy wiring through the terminal PCB board
  • NOVA V3™ switch option ensures extreme durability and high power switching capabilities
  • Single tool opening design, allowing the operator to unscrew the lid by hand after removing the locker
  • Captive bolts on the screwed lid.

Download the Soldo Product Overview brochure (16.4MB, PDF)

Product Description

Technical Data:


  • Die-cast aluminum body and cover with polyester powder coating
  • Stainless steel fasteners and shafts



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:

NEMA 4, 4X

Cable entries options:

Up to three cable entries from the following sizes

  • 1/2" NPT
  • 3/4" NPT


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