Explosion Proof Junction Box | Aluminum Ex Enclosure
Explosion Proof Junction Box | Aluminum Ex Enclosure
The explosion proof junction box is a heavy-duty flameproof electrical enclosure engineered for hazardous explosive environments. Constructed from high-strength die-cast aluminum alloy with Ex d certification and IP65 ingress protection, it provides safe housing for electrical components and wiring in Zone 1 & Zone 2 hazardous areas. Available in multiple sizes with full customization options, it is widely deployed in oil, gas, chemical and pharmaceutical industries.
The explosion proof junction box is a heavy-duty flameproof electrical enclosure engineered for hazardous explosive environments. Constructed from high-strength die-cast aluminum alloy with Ex d certification and IP65 ingress protection, it provides safe housing for electrical components and wiring in Zone 1 & Zone 2 hazardous areas. Available in multiple sizes with full customization options, it is widely deployed in oil, gas, chemical and pharmaceutical industries.
Product Overview
The explosion proof enclosure series is a professional flameproof electrical junction box designed for explosive gas atmospheres. Manufactured from high-grade die-cast aluminum alloy with an advanced flameproof structural design, it meets international Ex d explosion-proof standards and delivers reliable electrical safety for high-risk industrial environments.
This explosion proof junction box is suitable for Zone 1 and Zone 2 hazardous areas, and compatible with IIA, IIB and IIC group explosive gas environments. It serves as a safe housing for circuit breakers, terminal blocks, control switches and other electrical components, with fully customizable internal configurations and multiple size options to fit diverse project requirements.
Key Features
- Flameproof Structure Design: Ex d flameproof enclosure contains internal explosions and prevents ignition of external explosive gas atmospheres
- Heavy-duty Die-cast Housing: High-strength aluminum alloy body with excellent mechanical impact resistance and corrosion resistance
- IP65 Ingress Protection: Dust-tight and water-jet resistant, suitable for harsh outdoor and industrial working conditions
- Multiple Standard Sizes: Available in compact, medium and large dimensions to match different component and wiring demands
- Precision Machined Joint Surface: CNC-machined flameproof joint with uniform gap, ensuring stable and long-lasting explosion-proof performance
- Wall Mount Installation: Pre-reserved mounting lugs for easy on-site installation and routine maintenance
- Full Customization Support: Custom internal layout, terminal configuration and electrical components according to customer requirements
- Standard Safety Marking: Clear Ex logo and high-voltage warning signs, fully compliant with international safety specifications
Technical Specifications
| Parameter | Specification |
|---|---|
| Enclosure Material | High-grade die-cast aluminum alloy |
| Explosion Protection Mark | Ex d IIB T6 Gb / Ex d IIC T6 Gb (optional) |
| Protection Degree | IP65 |
| Corrosion Resistance Grade | WF1 |
| Rated Voltage | AC 380V / DC 220V (customizable) |
| Rated Current Range | Up to 400A (depends on internal configuration) |
| Applicable Hazardous Zones | Zone 1, Zone 2 |
| Applicable Gas Groups | IIA, IIB, IIC |
| Temperature Class | T6 (max surface temperature ≤85°C) |
| Installation Method | Wall-mounted |
| Cable Entry Thread | M20, M25, G1/2, G3/4 etc. (customizable) |
| Applicable Standards | IEC 60079-0, IEC 60079-1 |
| Fastening Hardware | Stainless steel bolts |
Explosion Protection Principle
Our explosion proof enclosures comply with the IEC 60079 series of international explosion-proof standards. The flameproof (Ex d) design means the enclosure can withstand the pressure generated by an internal explosion of flammable gas, while the precision-machined flameproof joint restricts the temperature and energy of escaping gas, preventing ignition of the external explosive atmosphere.
- Suitable for locations where explosive gas mixtures are likely to occur under normal operating conditions
- Covers most common industrial explosive media from IIA to IIC gas groups
- T6 temperature class ensures safety even for gases with low ignition temperatures
Application Industries & Scenarios
- Oil & gas exploration, refining facilities and storage depots
- Chemical plants, pharmaceutical factories and pesticide production workshops
- Natural gas transmission stations and pipeline facilities
- Paint spraying lines and flammable solvent storage areas
- Marine and offshore platform electrical systems
- Grain processing and dust explosion-prone industrial sites
- Coal mine surface electrical distribution systems
- Military and aerospace hazardous working areas
Structural Advantages
- One-piece Die-cast Molding: The enclosure body is formed by integrated aluminum alloy die casting, with no welding gaps and high structural strength
- Precision Flameproof Surface: CNC-machined joint surface with high flatness guarantees reliable long-term flameproof performance
- Reinforced Structure: Thickened corners and mounting lugs improve impact resistance and installation stability
- Stainless Steel Hardware: All fastening bolts and hinges are rust-proof and durable for long-term harsh environment use
- Smooth Internal Finish: Burr-free interior protects cables and electrical components from damage during assembly and maintenance
- Electrostatic Powder Coating: Uniform surface finish with strong adhesion, excellent corrosion resistance and clean appearance
Customization Options
We offer a full range of standard sizes from small terminal boxes to large distribution enclosures. Custom dimensions and internal configurations are fully supported based on customer drawings and requirements.
Customization scope includes:
- Custom enclosure dimensions and wall thickness
- Custom quantity and size of cable entry holes
- Internal component assembly: terminal blocks, circuit breakers, meters, control buttons, etc.
- Upgraded explosion-proof grade (Ex d IIC) and corrosion protection grade
- Special surface treatment for highly corrosive environments
- Custom brand logo and safety marking
Quality Assurance & Compliance
- Manufactured under strict ISO 9001 quality management system
- 100% explosion-proof pressure test and performance inspection before delivery
- Fully compliant with IEC 60079 standards, compatible with ATEX and IECEx requirements
- Each unit is delivered with a product certificate and explosion-proof test report
Installation & Maintenance Notes
- Before installation, confirm that the product’s explosion-proof grade matches the on-site hazardous environment classification
- Keep the flameproof joint surface clean and undamaged; apply appropriate anti-rust grease during assembly
- Tighten all fastening bolts evenly to ensure the sealing performance of the flameproof surface
- Do not drill or modify the enclosure structure without authorization, as this will damage the explosion-proof performance
- Conduct regular inspection of sealing condition and internal components; all maintenance must be performed in a power-off state
- Cut off the power supply before opening the enclosure; live opening is strictly prohibited
Why Choose LVMA
LVMA is a professional manufacturer of explosion-proof electrical equipment with years of R&D and production experience. We provide reliable explosion-proof solutions for global industrial customers, supporting OEM/ODM services, bulk export packaging and flexible delivery schedules. Our explosion proof enclosures are widely exported to Southeast Asia, the Middle East, Europe, Africa and other regions, trusted by engineering contractors, system integrators and industrial distributors worldwide.
Product Overview
The explosion proof enclosure series is a professional flameproof electrical junction box designed for explosive gas atmospheres. Manufactured from high-grade die-cast aluminum alloy with an advanced flameproof structural design, it meets international Ex d explosion-proof standards and delivers reliable electrical safety for high-risk industrial environments.
This explosion proof junction box is suitable for Zone 1 and Zone 2 hazardous areas, and compatible with IIA, IIB and IIC group explosive gas environments. It serves as a safe housing for circuit breakers, terminal blocks, control switches and other electrical components, with fully customizable internal configurations and multiple size options to fit diverse project requirements.
Key Features
- Flameproof Structure Design: Ex d flameproof enclosure contains internal explosions and prevents ignition of external explosive gas atmospheres
- Heavy-duty Die-cast Housing: High-strength aluminum alloy body with excellent mechanical impact resistance and corrosion resistance
- IP65 Ingress Protection: Dust-tight and water-jet resistant, suitable for harsh outdoor and industrial working conditions
- Multiple Standard Sizes: Available in compact, medium and large dimensions to match different component and wiring demands
- Precision Machined Joint Surface: CNC-machined flameproof joint with uniform gap, ensuring stable and long-lasting explosion-proof performance
- Wall Mount Installation: Pre-reserved mounting lugs for easy on-site installation and routine maintenance
- Full Customization Support: Custom internal layout, terminal configuration and electrical components according to customer requirements
- Standard Safety Marking: Clear Ex logo and high-voltage warning signs, fully compliant with international safety specifications
Technical Specifications
| Parameter | Specification |
|---|---|
| Enclosure Material | High-grade die-cast aluminum alloy |
| Explosion Protection Mark | Ex d IIB T6 Gb / Ex d IIC T6 Gb (optional) |
| Protection Degree | IP65 |
| Corrosion Resistance Grade | WF1 |
| Rated Voltage | AC 380V / DC 220V (customizable) |
| Rated Current Range | Up to 400A (depends on internal configuration) |
| Applicable Hazardous Zones | Zone 1, Zone 2 |
| Applicable Gas Groups | IIA, IIB, IIC |
| Temperature Class | T6 (max surface temperature ≤85°C) |
| Installation Method | Wall-mounted |
| Cable Entry Thread | M20, M25, G1/2, G3/4 etc. (customizable) |
| Applicable Standards | IEC 60079-0, IEC 60079-1 |
| Fastening Hardware | Stainless steel bolts |
Explosion Protection Principle
Our explosion proof enclosures comply with the IEC 60079 series of international explosion-proof standards. The flameproof (Ex d) design means the enclosure can withstand the pressure generated by an internal explosion of flammable gas, while the precision-machined flameproof joint restricts the temperature and energy of escaping gas, preventing ignition of the external explosive atmosphere.
- Suitable for locations where explosive gas mixtures are likely to occur under normal operating conditions
- Covers most common industrial explosive media from IIA to IIC gas groups
- T6 temperature class ensures safety even for gases with low ignition temperatures
Application Industries & Scenarios
- Oil & gas exploration, refining facilities and storage depots
- Chemical plants, pharmaceutical factories and pesticide production workshops
- Natural gas transmission stations and pipeline facilities
- Paint spraying lines and flammable solvent storage areas
- Marine and offshore platform electrical systems
- Grain processing and dust explosion-prone industrial sites
- Coal mine surface electrical distribution systems
- Military and aerospace hazardous working areas
Structural Advantages
- One-piece Die-cast Molding: The enclosure body is formed by integrated aluminum alloy die casting, with no welding gaps and high structural strength
- Precision Flameproof Surface: CNC-machined joint surface with high flatness guarantees reliable long-term flameproof performance
- Reinforced Structure: Thickened corners and mounting lugs improve impact resistance and installation stability
- Stainless Steel Hardware: All fastening bolts and hinges are rust-proof and durable for long-term harsh environment use
- Smooth Internal Finish: Burr-free interior protects cables and electrical components from damage during assembly and maintenance
- Electrostatic Powder Coating: Uniform surface finish with strong adhesion, excellent corrosion resistance and clean appearance
Customization Options
We offer a full range of standard sizes from small terminal boxes to large distribution enclosures. Custom dimensions and internal configurations are fully supported based on customer drawings and requirements.
Customization scope includes:
- Custom enclosure dimensions and wall thickness
- Custom quantity and size of cable entry holes
- Internal component assembly: terminal blocks, circuit breakers, meters, control buttons, etc.
- Upgraded explosion-proof grade (Ex d IIC) and corrosion protection grade
- Special surface treatment for highly corrosive environments
- Custom brand logo and safety marking
Quality Assurance & Compliance
- Manufactured under strict ISO 9001 quality management system
- 100% explosion-proof pressure test and performance inspection before delivery
- Fully compliant with IEC 60079 standards, compatible with ATEX and IECEx requirements
- Each unit is delivered with a product certificate and explosion-proof test report
Installation & Maintenance Notes
- Before installation, confirm that the product’s explosion-proof grade matches the on-site hazardous environment classification
- Keep the flameproof joint surface clean and undamaged; apply appropriate anti-rust grease during assembly
- Tighten all fastening bolts evenly to ensure the sealing performance of the flameproof surface
- Do not drill or modify the enclosure structure without authorization, as this will damage the explosion-proof performance
- Conduct regular inspection of sealing condition and internal components; all maintenance must be performed in a power-off state
- Cut off the power supply before opening the enclosure; live opening is strictly prohibited
Why Choose LVMA
LVMA is a professional manufacturer of explosion-proof electrical equipment with years of R&D and production experience. We provide reliable explosion-proof solutions for global industrial customers, supporting OEM/ODM services, bulk export packaging and flexible delivery schedules. Our explosion proof enclosures are widely exported to Southeast Asia, the Middle East, Europe, Africa and other regions, trusted by engineering contractors, system integrators and industrial distributors worldwide.
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