In industries like oil & gas, chemicals, mining, and pharmaceuticals, flammable gases, vapors, or dust can create hazardous environments where even small components—like terminal blocks—must meet the highest safety standards. Terminals are key connection points, and in explosive atmospheres, their reliability and compliance are critical to operational safety.
IECEx and ATEX are the leading certification systems ensuring equipment is safe for hazardous locations. IECEx offers global recognition under the IEC 60079 series, while ATEX is a mandatory EU directive (2014/34/EU). Terminal blocks compliant with these standards are tested for ignition prevention, zone suitability (Zone 1 & Zone 2), and environmental durability.
The Ex certificates list all approved accessories, which must also meet compliance standards. To maintain proper creepage and clearance distances in Ex "e" (increased safety) applications, accessories like termination and partition plates are essential.
For intrinsically safe circuits Ex "i", terminal blocks function as passive components and do not require type examination certificates, though they must comply with EN 60079-11. We recommend using blue terminals for clear identification in Ex "i" circuits. When using test disconnect or fuse terminal blocks, they must be certified for Ex "ec" protection.
Choosing certified and correctly applied terminal blocks not only ensures compliance and safety but also supports seamless integration across global hazardous location requirements.
