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
  • Suitable for Arctic Application, Down to -55° C (67° F)
  • 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
  • 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
The above description encapsulates the entire product series. Specifications for individual configurations may vary depending on the selection chosen.
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Selected Configuration

Model #:

SK-SQ

Price:
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Min. Qty:
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Configuration

reset configuration

Agency Approvals

  • ATEX Ex II 2GD Ex d IIC T4/T5/T6 Gb, Ex tb IIIC T135/T100/T85° C Db
  • CCOE Ex II 2GD 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 2GD Ex d IIC T4/T5/T6 Gb, Ex tb IIIC T135/T100/T85° C Db
  • IEC Ex: Ex II 2GD Ex d IIC T4/T5/T6 Gb, Ex tb IIIC T135/T100/T85° C Db
  • INMETRO Ex II 2GD Ex d IIC T4/T5/T6 Gb, Ex tb IIIC T135/T100/T85° C Db
  • NEPSI
  • SIL 3
  • UL Class I Division 1 Groups B, C, D Division 2 Groups A, B, C, D and Class II Division 1 Groups E, F, G Division 2 Groups F, G

Temperature Range

  • -60° to 100° C (-76° to 212° F)

Ambient Temperature

  • -55° to 105° C (-67° to 221° F)

Switch Quantity

  • 2 Switches

Media

  • Inert Gas Contact Chamber

Environmental Protection

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

Switch Type

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

Supply Voltage

  • 10-30 Vdc - 3 wire PNP Normally Open

Cable Entry

  • 1/2" NPT
  • M20 x 1.5

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 and N4
  • 5 A at 28 Vdc - High Power Loop for NOVA V3™ N1 and N4

Electrical Contacts

  • Gold-Plated - For SPDT
  • Normally Open
  • Silver-Plated - For SPDT and DPDT

Electrical Connectors

  • 3-Wire

Terminal Strip

  • Standard PCB Board with 3 Extra Terminal Poles

Indication

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

Enclosure/Body Material

  • AISI 316 Stainless Steel - For SQ Series
  • Die-cast Aluminum - For SK Series

Enclosure Finish

  • Black Polyester Powder Coated - For SK Series
  • Electropolishing - For SQ Series

Shaft Material

  • Stainless Steel - Shaft and Fastener Material

Cover Material

  • AISI 316 Stainless Steel - For SQ Series
  • Die-cast Aluminum - For SK Series

Applications

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

Current

  • 0-100 mA - 3 wire PNP Normally Open