Explosion-proof Terminal Box for Hazardous Area

The Explosion-proof Terminal Box is widely used in hazardous industrial environments such as chemical plants, oil refining facilities, oil exploitation fields, offshore oil platforms, oil tankers, military installations, and other high-risk operational areas. It is specially designed for safe cable distribution when installing electrical appliances, lighting systems, and industrial heating equipment in explosive atmospheres.

With a robust structural design and strict compliance with international explosion protection standards, this terminal box ensures safe and reliable electrical connections in gas and dust hazardous zones.

Product Application Scope

The Explosion-proof Terminal Box is engineered for demanding industrial environments where safety and reliability are critical. It is suitable for:

• Chemical processing industries

• Oil refining and petrochemical plants

• Oil exploration and drilling sites

• Offshore oil platforms and marine engineering systems

• Oil tankers and transportation vessels

• Military and defense installations

• Other hazardous industrial areas with explosive atmospheres

It is ideal for cable distribution systems during the installation of electrical appliances, industrial lighting fixtures, and heating trace systems.

Product Appearance and Structural Design

The design combines durability with industrial aesthetics:

• Enclosure material: Aluminum alloy housing for lightweight strength

• Surface hardware: Stainless steel exposed fasteners for corrosion resistance

• Overall structure: Compact, robust, and suitable for harsh environments

The enclosure design ensures both mechanical protection and long-term operational stability in corrosive and high-vibration conditions.

Installation Flexibility

The Explosion-proof Terminal Box supports multiple installation methods to meet different engineering requirements:

• Hanging installation

• Embedded installation

• Heat tracing bracket installation

It is also compatible with various cable entry types, including:

• Rubber cables

• Armored cables

• Heating trace cables

This flexibility allows engineers to adapt the product to complex site conditions and diverse electrical system layouts.

Explosion Protection Classification

The terminal box is designed for both gas and dust explosive environments.

Gas explosion protection:

Ex db IIC T6 Gb
II 2G Ex db IIC T6 Gb

Dust explosion protection:

Ex tb IIIC T80°C Db
II 2D Ex tb IIIC T80°C Db

These ratings ensure safe operation in Zone 1, Zone 2, Zone 21, and Zone 22 hazardous areas.

Certification and Standards Compliance

The Explosion-proof Terminal Box fully complies with international explosion protection standards:

GB Standards:

GB/T 3836.1-2021
GB/T 3836.2-2021
GB/T 3836.31-2021

IECEx Standards:

IEC 60079-0:2017
IEC 60079-1:2014-06
IEC 60079-31:2013

ATEX Standards:

EN IEC 60079-0:2018
EN IEC 60079-1:2014
EN IEC 60079-31:2014

These certifications ensure global acceptance and compliance in hazardous area installations.

Enclosure Material and Corrosion Resistance

The enclosure is built for long-term durability in extreme environments:

• Material: Copper-free aluminum alloy ZL102

• High mechanical strength and lightweight structure

• Excellent corrosion resistance for industrial and offshore use

The exposed fasteners are made from:

• SS304 stainless steel or SS316 stainless steel

This ensures excellent resistance against salt spray, humidity, and chemical corrosion.

Environmental Performance

The Explosion-proof Terminal Box is designed to operate reliably under harsh environmental conditions:

• Ambient temperature range: -43°C to +60°C

• Protection rating: IP66 (dust-tight and water-resistant)

• Anti-corrosion rating: WF2 (suitable for severe industrial environments)

These features make it suitable for offshore, chemical, and high-humidity applications.

Electrical Performance and Power Ratings

The terminal box supports stable and safe electrical distribution for industrial systems:

• Maximum rated voltage: AC 500V

• Rated current options: 10A, 16A, 32A

It is suitable for low to medium power distribution applications in hazardous environments, ensuring stable electrical connections for lighting, control systems, and heating equipment.

Key Advantages

• Safe operation in explosive gas and dust environments

• Multiple installation and cable entry options

• Strong corrosion resistance for offshore and chemical use

• Certified compliance with GB, IECEx, and ATEX standards

• High protection level IP66 for harsh environments

• Long service life with minimal maintenance requirements

Conclusion

The Explosion-proof Terminal Box is an essential component for safe and reliable electrical distribution in hazardous industrial environments. With certified explosion protection, flexible installation methods, corrosion-resistant materials, and strong electrical performance, it provides a dependable solution for industries such as oil and gas, chemical processing, offshore engineering, and military applications.

Engineered for safety and built for durability, it ensures stable operation even under the most demanding conditions, making it a trusted choice for global hazardous area electrical systems.