Hazardous Location Solutions
Choose the Right Product When Safety and Protection are Critical
nVent HOFFMAN hazardous location enclosures are crafted to keep electrical components safe in environments with flammable gases, vapors, or combustible dusts. Built tough to withstand rigorous conditions and certified to meet ATEX, IECEx, and UL standards for explosion-proof construction around electrical equipment.
Hazardous Location Product Categories
Hazardous Location Enclosures
ZonEx ATEX/IECEx enclosures in Type 4X stainless steel construction. Hinged and screw cover designs for Zone 1 and Zone 2 applications. Available in 316 stainless steel for maximum corrosion resistance.
- NEMA Type 4, 4X, 12 ratings
- IP66 ingress protection
- 316 Stainless Steel construction
- Zone 1 & Zone 2 certified
Purging & Pressurization Systems
Cost-effective alternative to NEMA Type 7 or 9 explosion-proof enclosures. Allows standard general-purpose enclosures to be used safely in Class I and Class II Division 1 and 2 hazardous locations.
- Type Y & Type Z purge systems
- Small-volume (2 & 10 cu ft) systems
- Large-volume continuous flow systems
- UL, cUL, Factory Mutual approved
Critical Application Note
Proper selection of hazardous location equipment requires thorough understanding of the area classification, gas/dust groups, and temperature classes involved. Contact Gross Automation at (262) 252-1600 for expert assistance in selecting the right solution for your specific hazardous location requirements.
Understanding Hazardous Location Classifications
NEC Division Classification System
The National Electrical Code (NEC) uses a Class/Division system to classify hazardous locations:
| Class | Hazard Type | Division 1 | Division 2 |
|---|---|---|---|
| Class I | Flammable gases, vapors, or liquids | Ignitable concentrations exist under normal conditions | Ignitable concentrations exist only under abnormal conditions |
| Class II | Combustible dust | Ignitable concentrations exist under normal conditions | Dust accumulations present but not normally in suspension |
| Class III | Ignitable fibers/flyings | Fibers handled, manufactured, or used | Fibers stored or handled (except manufacturing) |
Gas/Dust Groups
Class I Groups (Gases & Vapors)
- Group A: Acetylene
- Group B: Hydrogen, fuel gases
- Group C: Ethylene, cyclopropane
- Group D: Propane, gasoline, natural gas
Class II Groups (Dusts)
- Group E: Metal dusts (aluminum, magnesium)
- Group F: Carbon dusts (coal, coke)
- Group G: Grain dusts, flour, plastics
Zone Classification System (IEC/ATEX)
The European Zone system is increasingly used worldwide:
| Zone | Description | Equivalent NEC |
|---|---|---|
| Zone 0 | Explosive gas atmosphere present continuously or for long periods | More restrictive than Div 1 |
| Zone 1 | Explosive gas atmosphere likely under normal operation | Similar to Division 1 |
| Zone 2 | Explosive gas atmosphere not likely, or only briefly | Similar to Division 2 |
Industries Requiring Hazardous Location Protection
Oil & Gas
Refineries, drilling platforms, pipelines, tank farms, and gas processing facilities.
Chemical Processing
Chemical plants, paint manufacturing, solvent handling, and petrochemical facilities.
Pharmaceutical
Drug manufacturing, solvent recovery, alcohol processing facilities.
Food & Grain
Grain elevators, flour mills, sugar processing, and food manufacturing.
Coating & Finishing
Spray booths, powder coating, automotive finishing, and painting operations.
Mining
Coal mines, metal ore processing, and mineral extraction operations.
Need Help Selecting Hazardous Location Equipment?
Our experts can help you navigate area classifications and select the right protection.
Browse All Hazardous Location Products Contact Us: (262) 252-1600