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HK Instrument Enclosure, 4" Dome Cover Class I, II, III, BCDEFG, UL/CSA/FM, Cast Aluminum, Type 4,

By Killark 

Catalog ID: HK4D

By Killark
Catalog ID:  HK4D
HK Series, 4" Dome Cover Class I, II, III, BCDEFG, UL/CSA/FM, Cast Aluminum, Type 4, Instrument Enclosure

Small compact, 3-1/2 Dia. round body enclosures, two single port depths to choose from. Also available in a double port style. Option of 4 threaded lens covers and 4 blank threaded cover in 4 depths. The HK series is for use in locations that are hazardous, corrosive, wet, hose down, dust, dirty, under both sever hot and cold ambient conditions. They are UL / CSA / FM certified for Class I Groups BCD, Class I Zone 1 & 2 IIB+H2, Class II Groups EFG, Class III, Type 4 & 4X. Also, ATEX, IEC Ex, Ex db IIC, Ex e IIC, Ex tb IIIC T4…T3 IP66 with suffix “C”. Supplied with ¾”NPT conduit openings, additional openings are available. HK series is made of cast copper-free aluminum (less than 4/10 of 1%), supplied standard with a Nitrile (BUNA-N) O-Ring, internal external ground (earth) screws, stainless steel tamper proof locking set screw and electrostatically applied grey powder paint. Internal “X” pad for mounting instruments or terminals.

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Application Instrumentation housed in HK Series enclosures typically used to measure, detect, monitor, transmit, and control industrial processes and systems. HK Series enclosures are suitable for a broad range of applications, meeting both domestic and international
Color Gray
Cover Type Threaded
EU RoHS Indicator Contact Manufacturer
Material Copper-free aluminum
Series HK
Type Dome Cover
UPC 783936295350


Dimensions 6.5 in x 6.25 in x 4.75 in
Gross Weight with Packaging 2.67
Height 4.75 in
Length 6.5 in
Width 6.25 in

Certifications and Compliance

CSA File Number LR11716
Hazardous Rating(s)
  • Class I, Divisions 1 & 2, Groups A(suffix GA) B, C, D
  • Class I, Zones 1 & 2, Groups IIB+H2, IIA
  • Class II, Divisions 1 & 2, Groups E, F, G
  • Class III, Divisions 1 & 2
UL File Number E83696