text.skipToContent text.skipToNavigation

HK Instrument Enclosure, 3-1/2 ID RD Body 3" DP & Flat Cover, Class I, II, III, BCDEFG, UL/CSA/FM, Cast Aluminum, Type 4,

By Killark 

Catalog ID: HKB-B

By Killark
Catalog ID:  HKB-B
HK Series, 3-1/2 ID RD Body 3" DP & Flat 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.

Add to List

More Options

Where to Buy

Product Details


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 Enclosure & Blank Cover
UPC 783936295411


Dimensions 6.5 in x 6.125 in x 4.75 in
Gross Weight with Packaging 3.04
Height 4.75 in
Length 6.5 in
Width 6.125 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