Explosion-proof Junction box MAMX-07/08 series

Product Overview

The Explosion-proof Junction Box MAMX-07/08 Series is engineered for electrical power distribution and cable connection in hazardous industrial environments where explosive gases, combustible dust, high temperature, and corrosive conditions may exist. It is widely used in chemical plants, oil refining facilities, oil exploitation sites, offshore oil platforms, oil tankers, military installations, and other high-risk industrial areas.

This series is specifically designed for safe cable distribution when installing electrical equipment, lighting systems, heat tracing systems, and high-power electric heaters in complex field conditions.

Application Scope

The MAMX-07/08 series explosion-proof junction boxes are suitable for:

• Chemical and petrochemical industries

• Oil refining and oil extraction operations

• Offshore oil platforms and marine engineering

• Oil tankers and shipping environments

• Military and defense infrastructure

• Hazardous dust and gas explosive zones

• Heat tracing system installations

• High-power electrical heater distribution systems

• Industrial lighting and electrical appliance wiring

The robust structure ensures long-term safe operation in environments exposed to vibration, corrosion, and extreme temperature variation.

Structural Design and Appearance

The Explosion-proof Junction Box MAMX-07/08 Series combines industrial-grade durability with a clean and functional design.

• Enclosure Material: Copper-free aluminum alloy (ZL102)

• Exposed Fasteners: Stainless steel SS304 / SS316

• Surface Treatment: Electrostatic powder coating

• Standard Color: Dark grey (RAL 7090 equivalent)

• Optional Color: Light grey (RAL 7035)

The combination of aluminum alloy housing and stainless steel fasteners ensures both lightweight construction and high corrosion resistance, making it suitable for offshore and chemical environments.

Cable Entry and Installation Flexibility

This series is designed with high installation flexibility to meet diverse engineering requirements.

• Cable Entry Types: Suitable for armored cables and rubber cables

• Mounting Options: Hanging installation, floor-standing installation, and customized mounting structures

• Multi-directional entry design supports flexible wiring layouts

• Supports complex industrial distribution systems with multiple circuits

This flexibility ensures easier on-site installation and reduces engineering constraints in complex industrial layouts.

Explosion Protection Performance

The MAMX-07/08 series complies with international explosion-proof standards and supports both gas and dust hazardous environments.

Gas Explosion Protection:

• Ex db IIB + H2 T6…T4 Gb

• Ex db IIC T6…T4 Gb

Dust Explosion Protection:

• Ex tb IIIC T80°C…T135°C Db

ATEX Classification:

• II 2G Ex db IIB + H2 T6…T4 Gb

• II 2G Ex db IIC T6…T4 Gb

• II 2D Ex tb IIIC T80°C / T95°C / T135°C Db

These protection levels ensure safe operation in Zone 1, Zone 2 gas environments and Zone 21, Zone 22 dust environments.

Compliance with International Standards

The Explosion-proof Junction Box MAMX-07/08 Series is designed in full compliance with global safety regulations:

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

• IEC 60079-31:2013

ATEX Standards:

• EN IEC 60079-0:2018

• EN IEC 60079-1:2014

• EN IEC 60079-31:2014

These certifications ensure compatibility with global industrial safety requirements and facilitate international project deployment.

Electrical Performance Parameters

The MAMX-07/08 series is designed for high-load industrial power distribution systems.

• Rated Voltage: up to AC 1250V (50/60Hz)

• Rated Current: up to 1500A

• Protection Degree: IP66

• Anti-corrosion Level: WF2

These specifications ensure stable electrical performance even under high load, humidity, dust exposure, and corrosive conditions.

Material and Component Specifications

Key structural and electrical components include:

• Enclosure Material: Copper-free aluminum alloy ZL102

• Fastener Material: Stainless steel SS304 / SS316

• Terminal Brands: Weidmuller, Phoenix Contact, and equivalent industrial-grade terminals

• Cable Entry Compatibility: Armored cable and rubber cable systems

High-quality materials ensure long service life, reduced maintenance requirements, and reliable operation in continuous industrial use.

Thread and Cable Entry Specifications

The MAMX-07/08 series supports multiple standard thread systems for flexible engineering integration:

ISO 7-1:
1/2”, 3/4”, 1”, 1 1/4”, 1 1/2”, 2”, 2 1/2”, 3”, 4”

ANSI B1.20.1 (NPT):
1/2”, 3/4”, 1”, 1 1/4”, 1 1/2”, 2”

ISO 261/965 (Metric):
M20×1.5, M25×1.5, M32×1.5, M40×1.5, M50×1.5, M63×1.5, M75×1.5, M90×1.5, M110×1.5

These options allow seamless integration into different international piping and electrical installation standards.

Box Size and Configuration Reference

The series includes multiple enclosure sizes designed for different wiring capacities and installation requirements:

Typical configurations include:

• 250×200×170 mm

• 300×200×170 mm

• 350×200×170 mm

• 350×300×230 mm

• 450×350×205 mm

• 560×450×210 mm

• 560×450×280 mm

• 720×560×350 mm

Each configuration supports different numbers of cable entries depending on thread size and direction (U.D / L.R), allowing flexible adaptation to complex electrical distribution systems.

Industrial Advantages

The Explosion-proof Junction Box MAMX-07/08 Series provides several key advantages in industrial applications:

• High safety performance in explosive environments

• Strong corrosion resistance for offshore and chemical use

• Flexible installation and wiring configurations

• Wide compatibility with international standards

• High load capacity for industrial power distribution

• Long service life with low maintenance requirements

These advantages make it suitable for continuous operation in demanding industrial environments where reliability is critical.

Conclusion

The Explosion-proof Junction Box MAMX-07/08 Series is a high-performance solution designed for hazardous industrial environments requiring safe and reliable electrical distribution. With robust aluminum alloy construction, stainless steel hardware, multiple certification compliance, and flexible installation options, it delivers stable performance across oil, gas, chemical, offshore, and military applications.

Engineers and procurement teams can rely on this series for long-term operational safety, efficient wiring management, and compliance with global explosion-proof standards in complex industrial systems.