Explosion-proof rating of professional distribution boxes in Southern Europe

Professional distribution boxes in Southern Europe are typically ATEX and IECEx certified for Zones 1, 2, 21, and 22, with protection methods including “Ex e” (increased safety) and “Ex d” (flameproof), and are constructed from materials like stainless steel or GRP to withstand hazardous environments.

Certification Standards

In Southern Europe, ATEX certification is mandatory for equipment used in explosive atmospheres, while IECEx provides an internationally recognized voluntary certification. Both systems classify equipment based on the type of explosive hazard, frequency of occurrence, and protection method. Distribution boxes are labeled with: Zone: Indicates the likelihood of explosive atmosphere presence (Zone 1/2 for gases, Zone 21/22 for dust)Equipment Group: Defines the industry and type of explosive material (I for mining, II for other industries)Protection Method (Ex Code): Examples include “Ex e” for increased safety and “Ex d” for flameproof enclosuresTemperature Class (T-Code): Maximum surface temperature to prevent ignition of surrounding materials Materials and ConstructionProfessional distribution boxes are often made from stainless steel (AISI 304L or 316L) or glass-reinforced polyester (GRP/Polyester) to resist corrosion, chemical exposure, and mechanical stress.

They are designed to meet IP ratings (e.g., IP65 or higher) to prevent dust and water ingress, which is critical in hazardous areas. Internal mounting options allow secure installation of terminal rails, control devices, and actuators while maintaining explosion protection.

Zones and Usage

Gas Hazard Zones: Zone 1 (likely presence) and Zone 2 (less likely)Dust Hazard Zones: Zone 21 (likely presence) and Zone 22 (less likely) Distribution boxes are engineered to operate safely in these zones, with separate heating calculations and IP tests to ensure compliance. Equipment Protection Levels (EPL)EPL indicates the likelihood of equipment causing ignition.

ATE

X categories and IECEx markings help determine the required protection level for a given zone. For example, a Zone 1 gas area typically requires Category 2G equipment, while Zone 22 dust areas require Category 3D equipment.

Summary

In Southern Europe, professional distribution boxes for hazardous areas are customizable, ATEX/IECEx certified, and constructed from robust materials to meet the required explosion-proof ratings. They are suitable for both gas and dust environments, with IP-rated enclosures and temperature classes designed to prevent ignition. Manufacturers like Atex Delvalle and Bartec provide a wide range of stainless steel and GRP enclosures for Zones 1, 2, 21, and 22, ensuring compliance with European safety standards.