Hazardous Location Enclosures

Electrical enclosures are designed to house industrial components and to protect them from the surrounding environment. They are also designed to protect operators from electric shock. They come in many different shapes, sizes and materials. Some things to consider when selecting the proper enclosure would be the number of components housed inside and what material and rating will provide the appropriate protection.

Hazardous location enclosures are specifically designed to isolate electrical components from hazardous locations. Hazardous locations are classified as areas where there is the possibility of explosion or fire because of the presence of ignitable or combustible gases, vapors, liquids, fibers or dust. Electrical equipment can be a potential source of ignition through sparks, equipment failure and high temperatures. Hazardous location enclosures are constructed to eliminate the potential for ignition of the atmosphere.

Enclosure pressure purging is a protection method used to remove any internal explosive dust or gases through a purging process, followed by a pressurization of the enclosure with a protective air or inert gas. This results in a positive internal pressure which keeps any external explosive dust or gases from entering the enclosure.

The National Electrical Manufacturers Association (NEMA) has devised a rating system to set performance standards for electrical enclosures. Manufactures follow these universal standards when making their electrical enclosures and label them accordingly. It is important to understand that NEMA has a special rating class for hazardous locations.

Type 7 designed to contain an internal explosion without causing an external hazard. For indoor use in classified hazardous locations defined in NFPA 70. Deals with vapors and gases.

Type 8 designed to prevent combustion through the use of oil-immersed equipment. For either indoor or outdoor use in hazardous locations defined in NFPA 70.

Type 9 designed to prevent the ignition of combustible dusts. For indoor use in hazardous locations defined in NFPA 70

Type 10 designed to contain an internal explosion without causing an external hazard. Used in mining applications and meets the requirements of the Mine Safety and Health Administration.

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$1381.80
GUB series junction boxes are enclosures applicable for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. They have a screw cover and are used as junction boxes with or without terminals or for installation of electrical equipment such as fuses, relays, disconnectors, transformers, or remote control switches. Body can be drilled and threaded according to customers’ specifications. In accordance with rules, Hoffman must perform the drilling.
$583.80
GUB series junction boxes are enclosures applicable for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. They have a screw cover and are used as junction boxes with or without terminals or for installation of electrical equipment such as fuses, relays, disconnectors, transformers, or remote control switches. Body can be drilled and threaded according to customers’ specifications. In accordance with rules, Hoffman must perform the drilling.
$453.60
GUB series junction boxes are enclosures applicable for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. They have a screw cover and are used as junction boxes with or without terminals or for installation of electrical equipment such as fuses, relays, disconnectors, transformers, or remote control switches. Body can be drilled and threaded according to customers’ specifications. In accordance with rules, Hoffman must perform the drilling.
$386.40
GUB series junction boxes are enclosures applicable for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. They have a screw cover and are used as junction boxes with or without terminals or for installation of electrical equipment such as fuses, relays, disconnectors, transformers, or remote control switches. Body can be drilled and threaded according to customers’ specifications. In accordance with rules, Hoffman must perform the drilling.
$2804.20
SX7 series junction boxes are enclosures applicable for hazardous locations. They can be used as junction, pull and splice boxesas well as to enclosure electrical devices and instruments. Applications can include components such as motor starters, circuit breakers, control stations, terminal blocks, pilot lights, switch racks and panelboards.
$1628.20
Hoffman SX9GUB3A Aluminum Hazardous Location Junction Box SX9 Series Enclosure 12" H x 10.63" W x 9.45" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$1031.80
Hoffman SX9GUB2A Aluminum Hazardous Location Junction Box SX9 Series Enclosure 9.68" H x 8.74" W x 8" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$742.00
Hoffman SX9GUB1A Aluminum Hazardous Location Junction Box SX9 Series Enclosure 7" H x 7" W x 7" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$14532.00
Hoffman SX7EXCD Aluminum Hazardous Location Junction Box SX7 Series Enclosure 16.69" H x 37.28" W x 17.28" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$12839.40
Hoffman SX7ESGD Aluminum Hazardous Location Junction Box SX7 Series Enclosure 20.39" H x 32.44" W x 18" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$11524.80
Hoffman SX7ESG8 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 20" H x 32" W x 11.54" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$9297.40
Hoffman SX7EOF6 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 19" H x 28" W x 9.53" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$9639.00
Hoffman SX7EOCC Aluminum Hazardous Location Junction Box SX7 Series Enclosure 16" H x 27.8" W x 16" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$9417.80
Hoffman SX7EKK8 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 24.09" H x 24.13" W x 11.14" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$8883.00
Hoffman SX7EIIC Aluminum Hazardous Location Junction Box SX7 Series Enclosure 22.44" H x 22.28" W x 15.35" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$5787.60
Hoffman SX7EIC8 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 22.44" H x 16.5" W x 11" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$4748.80
Hoffman SX7EGG6 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 19.68" H x 19.68" W x 8.58" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$4701.20
Hoffman SX7EGF6 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 18.7" H x 19.8" W x 9" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$5912.20
Hoffman SX7EGE9 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 18.35" H x 110" W x 12" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$4795.00
Hoffman SX7EGC8 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 16" H x 19.8" W x 9.37" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$4408.60
Hoffman SX7EGC6 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 20" H x 16" W x 9.37" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$4295.20
Hoffman SX7EFC6 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 16" H x 18.66" W x 9.49" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$2188.20
Hoffman SX7EC56 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 9.33" H x 16" W x 9.49" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$1881.60
Hoffman SX7EA66 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 10" H x 14" W x 8.66" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$1542.80
Hoffman SX7E884 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 11.5" H x 11.5" W x 6.5" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$1846.60
Hoffman SX7E883 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 12" H x 12" W x 6.18" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$1720.60
Hoffman SX7E866 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 11.34" H x 9.41" W x 8.54" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$1513.40
Hoffman SX7E864 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 10" H x 12" W x 6.18" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$1449.00
Hoffman SX7E666 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 10.51" H x 10.51" W x 6" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$1485.40
Hoffman SX7E664 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 9.57" H x 9.57" W x 7" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$1135.40
Hoffman SX7E644 Aluminum Hazardous Location Junction Box SX7 Series Enclosure 9.57" H x 7.6" W x 7" D, NEMA 7, 9, 4X or 3 and Class 1 Div 1 group C or D, Class 2 Group E, F or G, and Class 3. Low copper aluminum alloy and stainless steel bolts and screws on cover with stainless hinges. Grey electrostatic polyester paint, external earth screw, NPT for rigid conduit. Use as junction box, pull box and splice box as well as enclosure for electrical equipment like motor starters, breakers, terminal blocks, control stations and more.
$18844.00
Hoffman EJB6B Aluminum Junction Box EJB Series Enclosure 34" H x 25.59" W x 15" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$4977.00
Hoffman EJB5BA Aluminum Junction Box EJB Series Enclosure 24.88" H x 17" W x 9.02" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$3820.60
Hoffman EJB45BA Aluminum Junction Box EJB Series Enclosure 22.32" H x 15.24" W x 10" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$2160.20
Hoffman EJB4BA Aluminum Junction Box EJB Series Enclosure 17" H x 13" W x 9.02" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$1526.00
Hoffman EJB3BA Aluminum Junction Box EJB Series Enclosure 14.33" H x 11.18" W x 8.58" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$20239.80
Hoffman EJB6 Aluminum Junction Box EJB Series Enclosure 34" H x 22" W x 19" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$5216.40
Hoffman EJB5A Aluminum Junction Box EJB Series Enclosure 24.88" H x 17" W x 10.67" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$4128.60
Hoffman EJB45A Aluminum Junction Box EJB Series Enclosure 22.32" H x 15.24" W x 12" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$2700.60
Hoffman EJB4A Aluminum Junction Box EJB Series Enclosure 17" H x 13" W x 12" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$1874.60
Hoffman EJB3A Aluminum Junction Box EJB Series Enclosure 14.33" H x 11.18" W x 10.94" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$1120.00
Hoffman EJB1 Aluminum Junction Box EJB Series Enclosure 12" H x 8" W x 8.58" D, for Zone 1, 2, 21 or 22 with ATEX and IECEx certifications. High temperature-resistant silicone gasket, epoxy coating RAL 7035 light gray. Includes internal mounting panel. Use as junction box with or without terminals.
$463.40
Hoffman EXE400405165 ZONEX Non-Metallic Enclosure. This convenient Hoffman Fiberglass ZONEX enclosure is certified to meet ATEX Directive 94/9/EC as well as IECEx standards for increased safety in housing electrical components in Zone 1 and Zone 2 applications. Reusable durable internal M4 or M6 stainless steel inserts for Din and Panel mounting. Optional panels sold seperately.
$387.80
Hoffman EXE400405120 ZONEX Non-Metallic Enclosure. This convenient Hoffman Fiberglass ZONEX enclosure is certified to meet ATEX Directive 94/9/EC as well as IECEx standards for increased safety in housing electrical components in Zone 1 and Zone 2 applications. Reusable durable internal M4 or M6 stainless steel inserts for Din and Panel mounting. Optional panels sold seperately.
$324.80
Hoffman EXE400250120 ZONEX Non-Metallic Enclosure. This convenient Hoffman Fiberglass ZONEX enclosure is certified to meet ATEX Directive 94/9/EC as well as IECEx standards for increased safety in housing electrical components in Zone 1 and Zone 2 applications. Reusable durable internal M4 or M6 stainless steel inserts for Din and Panel mounting. Optional panels sold seperately.
$266.00
Hoffman EXE255250120 ZONEX Non-Metallic Enclosure. This convenient Hoffman Fiberglass ZONEX enclosure is certified to meet ATEX Directive 94/9/EC as well as IECEx standards for increased safety in housing electrical components in Zone 1 and Zone 2 applications. Reusable durable internal M4 or M6 stainless steel inserts for Din and Panel mounting. Optional panels sold seperately.
$243.60
Hoffman EXE56016090 ZONEX Non-Metallic Enclosure. This convenient Hoffman Fiberglass ZONEX enclosure is certified to meet ATEX Directive 94/9/EC as well as IECEx standards for increased safety in housing electrical components in Zone 1 and Zone 2 applications. Reusable durable internal M4 or M6 stainless steel inserts for Din and Panel mounting. Optional panels sold seperately.
$224.00
Hoffman EXE36016090 ZONEX Non-Metallic Enclosure. This convenient Hoffman Fiberglass ZONEX enclosure is certified to meet ATEX Directive 94/9/EC as well as IECEx standards for increased safety in housing electrical components in Zone 1 and Zone 2 applications. Reusable durable internal M4 or M6 stainless steel inserts for Din and Panel mounting. Optional panels sold seperately.