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Instrument enclosures

GUB Explosionproof Instrument Enclosures

Crouse-Hinds series GUB explosionproof instrument enclosures are used to enclose ammeters, voltmeters, wattmeters, varmeters, power factor meters, tachometer indicators, pressure controls, etc., in a threaded rigid metallic conduit system.  GUBs are approved for use in Class I and Class II hazardous areas often encountered in oil refineries, chemical plants, paint and varnish manufacturing plants, coal processing locations, grain processing plants, and other industrial applications.

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Certifications and compliances

NEC/CEC

  • Class I, Divisions 1 & 2, Group D
  • Class II, Division 1, Groups E, F, G
  • Class II, Division 2, Groups F, G
  • Class III
  • NEMA/EEMAC: 3, 7D, 9EFG, 12
  • UL standard: 1203
  • CSA standard: C22.2 No. 30

IEC

  • IEC standards: EN60079-0, EN60079-1
  • Ex II 2 G Ex d IIC Gb
  • PTB 01 ATEX 1019 U

Design features

  • Threaded covers have glass windows for viewing scale, dial or setting of enclosed instrument
  • Mounting plates, brackets or pillars for mounting a wide variety of instruments are available on special order; instrument to be used must be specified by make, complete identification data, and dimensions

Standard materials

  • Body – Feraloy iron alloy
  • Cover – copper-free aluminum
  • Window – heat strengthened plate glass
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