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SK-SQ Limit Switch Box Series

Brand: Soldo Controls
Compact limit switch box, designed for hazardous areas, provides a visual and electrical remote position feedback on automated valves. 

Available in either die cast aluminum or 316L stainless steel, the explosionproof enclosure matches the Exd IIC T6 standards. The SK-SQ switch box series offer a ready to mount solution thanks to the integrated Namur mounting kit. 

The ideal compact solution for oil and gas, both on-shore and off-shore, and petrochemical industries.
Features
  • Twin shaft design, ensuring a complete sealed device. The shaft is split in two parts, each fitted and sealed into the body and cover for the best weather insulation even during opening operation 
  • Integrated Mounting Kit for Namur Actuators
  • Two Cable Entries, Either Metric or Imperial
  • Enhanced Corrosion Resistance Due to the Thick Polyester Powder Coating on Aluminum Housings
  • 316L Stainless Steel Housing for the Maximum Protection in Hostile and Corrosive Environments (SQ Series)
  • Enhanced Corrosion Resistance Thanks to the Thick Polyester Powder Coating on Aluminum Housings (SK Series)
  • Easy Wiring through the Terminal PCB Board
  • NOVA V3 Switch option ensures extreme durability and high power switching capabilities
  • Concentric flame path design providing a self-centering system aligning shafts for a precise engagement
  • Captive Bolts on the Screwed Lid
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Compact limit switch box, designed for hazardous areas, provides a visual and electrical remote position feedback on automated valves. 

Available in either die cast aluminum or 316L stainless steel, the explosionproof enclosure matches the Exd IIC T6 standards. The SK-SQ switch box series offer a ready to mount solution thanks to the integrated Namur mounting kit. 

The ideal compact solution for oil and gas, both on-shore and off-shore, and petrochemical industries.
Features
  • Twin shaft design, ensuring a complete sealed device. The shaft is split in two parts, each fitted and sealed into the body and cover for the best weather insulation even during opening operation 
  • Integrated Mounting Kit for Namur Actuators
  • Two Cable Entries, Either Metric or Imperial
  • Enhanced Corrosion Resistance Due to the Thick Polyester Powder Coating on Aluminum Housings
  • 316L Stainless Steel Housing for the Maximum Protection in Hostile and Corrosive Environments (SQ Series)
  • Enhanced Corrosion Resistance Thanks to the Thick Polyester Powder Coating on Aluminum Housings (SK Series)
  • Easy Wiring through the Terminal PCB Board
  • NOVA V3 Switch option ensures extreme durability and high power switching capabilities
  • Concentric flame path design providing a self-centering system aligning shafts for a precise engagement
  • Captive Bolts on the Screwed Lid

Specifications

Ambient Temperature Range

  • -55° to 105° C (-67° to 221° F)

Applications

  • Oil & Gas Applications
  • On-Shore & Off-Shore
  • Petrochemical Industries

Approvals & Certifications

  • ATEX Ex II 2 GD Ex D IIC T4/T5/T6 Gb, Ex Tb IIIC T135/T100/T85° C Db
  • CCOE Ex II 2 GD Ex D IIC T4/T5/T6 Gb, Ex Tb IIIC T135, T100, T85° C Db
  • CE
  • cULus Class1/2 Div1, Class1/2 Div2
  • EAC Ex II 2 GD Ex D IIC T4/T5/T6 Gb, Ex Tb IIIC T135, T100, T85° C Db
  • IEC Ex: Ex II 2 GD Ex D IIC T4/T5/T6 Gb, Ex Tb IIIC T135, T100, T85° C Db
  • INMETRO Ex II 2 GD Ex D IIC T4/T5/T6 Gb, Ex Tb IIIC T135/T100/T85° C Db
  • NEPSI
  • PESO
  • SIL 3
  • UL Class I Division 1, Groups B, C, D Division 2, Grade A, B, C, D & Class II Division 1, Groups E, F, G Division 2, Groups F, G

Cable Entry

  • 1/2" NPT
  • M20 x 1.5

Cover Material

  • 316 Stainless Steel - for SQ Series
  • Die Cast Aluminum - for SK Series

Current

  • 0 to 100 mA - 3-Wire PNP Normally Open

Electrical Connectors

  • 3-Wire

Electrical Contacts

  • Gold-Plated - for SPDT
  • Normally Open
  • Silver-Plated - for SPDT & DPDT

Electrical Rating

  • 1 A at 24 Vdc - for Reed C4
  • 1 A at 250 Vac - High Power Loop for NOVA V3™ N3
  • 1 A at 30 Vdc - High Power Loop for NOVA V3™ N3
  • 5 A at 250 Vac - High Power Loop for NOVA V3™ N1 & N4
  • 5 A at 28 Vdc - High Power Loop for NOVA V3™ N1 & N4

Enclosure Finish

  • Black Polyester Powder-Coated - for SK Series
  • Electro-Polishing - for SQ Series

Enclosure, Body Material

  • 316 Stainless Steel - for SQ Series
  • Die Cast Aluminum - for SK Series

Environmental Protection

  • Hazardous Area
  • IP66
  • IP67
  • IP68
  • NEMA 4
  • NEMA 4X
  • Weatherproof

Indication

  • 3D Plastic Visual (Red & Green) & 3D Stainless Steel Position Indicator

Media

  • Inert Gas Contact Chamber

Shaft Material

  • Stainless Steel - Shaft & Fastener Material

Supply Voltage

  • 10-30 Vdc - 3-Wire PNP Normally Open

Switch Quantity

  • 2 Switches

Switch Type

  • DPDT Switch: Proximity Hermetically Sealed Snap Acting
  • PNP
  • SPDT Switch: Proximity Hermetically Sealed Snap Acting & Reed

Temperature

  • -55 to +105 °C (67 to +221 °F) Available on Request
  • +20 to +80 °C (-4 to +176 °F) Standard Temperature Range

Terminal Strip

  • Standard PCB Board with 3 Extra Terminal Poles