UK Second Works Explosion-proof Distribution Box

Explosion-proof distribution boxes in the UK are ATEX and IECEx certified enclosures designed for safe electrical distribution in hazardous areas, available in stainless steel, aluminium, and GRP with Ex d (flameproof) and Ex e (increased safety) protection.

Overview

Explosion-proof distribution boxes, also known as distribution boards, junction boxes, or control panels, are used to safely divide electrical power into subsidiary circuits while protecting each circuit with fuses or breakers. In hazardous areas, these boxes are designed to prevent ignition of flammable gases, vapors, or dust, complying with ATEX 94/9/CE and IECEx standards .

Protection Types

• Ex d (Flameproof): Enclosures withstand internal explosions and prevent flame propagation to the external environment, suitable for Zone 1 and Zone 2 hazardous areas .
• Ex e (Increased Safety): Prevents sparks and hot surfaces inside the enclosure, commonly used for terminal and junction boxes .
• Ex i (Intrinsic Safety): Limits energy to prevent ignition, often used in instrumentation connections .

Materials and Construction

• Stainless Steel (AISI 304L / 316L): Corrosion-resistant, suitable for outdoor and extreme conditions .
• Aluminium: Lightweight and durable, often used for indoor and moderate environments .
• GRP (Glass Reinforced Polyester): Non-metallic, corrosion-resistant, and suitable for chemical or marine environments .
• External fastenings: Typically stainless steel for durability and compliance with ATEX directives .

Features and Customization

• Cable glands and terminal blocks: Designed for safe connections, often with increased safety CRIC terminals .
• Customizable layouts: Many suppliers offer bespoke configurations for control elements, push buttons, meters, and indicators .
• Temperature and environmental tolerance: Some enclosures operate in extreme temperatures down to –40°C and withstand harsh outdoor conditions .
• Certifications: ATEX, IECEx, UL, EAC, InMetro, and North American approvals for Class 1 Div 2 and Zone 2 applications .

Suppliers in the UK

• Marechal B2X: Offers ATEX-certified explosion-proof distribution boxes with stainless steel fastenings and CRIC terminal blocks .
• Extol International: Provides Ex d / Ex'de distribution boards in stainless steel, aluminium, and cast iron for Zone 1 and Zone 2 .
• Atex Delvalle: Custom-made local control stations and distribution boxes in stainless steel or GRP, configurable with multiple control elements and certified for ATEX and IECEx .
• R. STAHL: Offers standard and bespoke terminal boxes for hazardous areas worldwide, with short delivery times .

Applications

These distribution boxes are suitable for:

• Oil and gas facilities
• Chemical plants
• Pharmaceutical manufacturing
• Mining operations
• Any environment with flammable gases, vapors, or dust

Conclusion

UK Second Works explosion-proof distribution boxes provide robust, certified, and customizable solutions for electrical distribution in hazardous areas. They combine material durability, ATEX/IECEx compliance, and flexible configurations to ensure safety and operational reliability in extreme conditions .