Enclosures are explosion proof, dust/ ignition proof, weather proof and tamper resistant

HK Series boxes covers are cast from a copper-free aluminum alloy

Cast stainless steel box, flat & lens cover available (HKSB-BC + HKSB-GLC)

Neoprene 0-rings are provided with HK boxes to assure water resistance in NEMA 4/IP66 conditions Certified - File LR11716 File 1W1R4-RE Class I, Div. 1 & 2, Groups A*, B, C, D† Class I, Zones 1 & 2, Groups llB + H2, llA Class II, Div. 1 & 2, Groups E, F, G Class III, Type 3, 4, 4X NEMA 3, 4, 4X, 7 (B, C, D) 9 (E, F, G) IECEx UL 14.0071U DEMKO 01 ATEX 15742U II 2 G / D Ex db IIC Gb, Ex tb IIIC Db IP66 Ta = -20°C to +60°C for GL (glass) lenses Ta = -20°C to +70°C for blank covers

Three box styles available: HKB, HKBD single cover design and the 2HKB double cover design. 2HKB enclosure has two separate chambers for isolation between power and instrument.

HKB, HKBD box has offset feed-thru conduit openings (3/4” NPT) for maximum use of interior volume

2HKB box has offset feed-thru conduit openings (3/4” NPT ) on power side and one (3/4” NPT) on bottom instrument side

Interior mounting pad for instrument/ device cast into the bottom of the HKB, HKBD box is provided in an “X”- configuration for flexibility

Location of the internal ground screw boss does not interfere with the mounting of the instrument or device

Eight different cover styles are available: standard flat cover, standard glass lens cover, 1” dome cover, 1” dome lens cover, 2” dome cover, 2” glass lens dome cover, 4” dome cover and 4” dome lens cover.

All covers have shrouded tamper resistant set screws as standard which can help to combat excessive vibration in rugged settings

Lugs on cover permit easy removal and tightening