New Explosion-proof Distribution Box Model

Recent explosion-proof distribution boxes, including HRMD96, HRMD92, BX53-III, and BX53-IV, feature stainless steel enclosures, flameproof designs, and compliance with IECEx, ATEX, and GB/T standards ...

New Explosion-proof Distribution Box Model

Recent explosion-proof distribution boxes, including HRMD96, HRMD92, BX53-III, and BX53-IV, feature stainless steel enclosures, flameproof designs, and compliance with IECEx, ATEX, and GB/T standards for hazardous zones.

HRMD96 Series

The HRMD96 series features flameproof enclosures (Ex db) suitable for feed distribution in control and distribution systems, including main circuit switch boxes, control boxes, terminal boxes, and motor starting boxes. Enclosures are made from 304 or 316L stainless steel and Q235 steel, with a specialized hinge structure to prevent damage to flameproof joints during opening and closing, extending service life. These boxes can be combined and installed freely to save space and meet various system requirements. They comply with Ex db IIC T6…T41, Ex tb IIIC T80°C…T130°C standards and can be customized for special requirements .

HRMD92 Series

The HRMD92 series uses Ex d IIB+H2 flameproof enclosures and stainless steel construction. It supports a wide range of electrical components, including MCCBs, MCBs, AC contactors, thermal relays, PLCs, surge protectors, meters, soft starters, frequency converters, and more. The boxes feature a specialized hinge structure for durability and can be combined for space efficiency. Entry holes can be customized with standard M ☐ x 1.5 plugs or NPT plugs. Recommended types include DQM-II (Ex d) or DQM-III (Ex d) .

BX53-III Series

The BX53-III model is designed for hazardous environments and supports multiple circuits within a single chamber. Key features include stainless steel fasteners for corrosion resistance, hinged cover plates for easy maintenance, and explosion-proof cable entry devices. Switch handles are standard PC material but can be customized in metal. The box can house circuit breakers, AC contactors, thermal relays, surge protectors, universal changeover switches, fuses, meters, and pushbuttons. It is suitable for Zone 1 and Zone 2 gas environments (Class IIA, IIB, IIC) and Zone 21 and Zone 22 dust environments (Class IIIA, IIIB, IIIC), with temperature classes T1 to T6 .

BX53-IV Series

The BX53-IV series builds on the BX53-III design with similar features: integrated explosion-proof construction, multiple circuit accommodation, hinged cover, and cable entry devices. It is suitable for Zone 1 and Zone 2 explosive gas environments and ensures safe power distribution in hazardous areas, preventing ignition risks. Customization options include rain covers, protective enclosures, and material selection for outdoor use .

Summary of Key Specifications

  • Materials: 304/316L stainless steel, Q235 steel
  • Certifications: IECEx, ATEX, GB/T3836, IEC60079 series
  • Zones: Gas Zones 1 & 2, Dust Zones 21 & 22
  • Temperature Classes: T1–T6
  • Design Features: Flameproof enclosures, hinged covers, corrosion-resistant fasteners, customizable cable entries
  • Electrical Components Compatibility: Circuit breakers, contactors, relays, meters, PLCs, surge protectors, soft starters, and more
  • Installation: Vertical mounting with optional rain covers or protective enclosures These models provide flexible, durable, and certified solutions for industrial applications in hazardous environments, ensuring safety and compliance with international standards.
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