LD-FBJX Series Explosion-Proof Junction Box (Ex d IIC / DIP) – Flameproof Type

Product Features

The explosion-proof junction box is designed and manufactured in strict accordance with GB/T 3836.1 “Explosive Atmospheres – Part 1: Equipment – General Requirements” and GB/T 3836.2 “Explosive Atmospheres – Part 2: Equipment Protection by Flameproof Enclosure ‘d’”. It also references GB/T 3836.31 “Explosive Atmospheres – Part 31: Equipment Dust Ignition Protection by Enclosure ‘t’” for design and manufacturing.

Material: Carbon steel or stainless steel, formed by precision welding under argon gas shielding.

Surface Treatment: Coating (painting) or chemical surface treatment.

Cable Entry/Exit Method: Equipped with explosion-proof cable glands.

Cable Entry/Exit Configuration: The direction and specifications of cable entries/exits can be customized according to user requirements.

Product Advantages

• 01

  Flameproof + IIC-Level Maximum Safety

  Flameproof Protection Type (Ex d):
  A high-strength enclosure effectively contains internal explosions. Even if ignition occurs inside, it will not ignite the external hazardous atmosphere. Suitable for use in Zone 1 areas.

   

  IIC Certification – Highest Safety Level:
  Suitable for the most hazardous gases such as hydrogen and acetylene, providing the highest level of explosion protection.

   

  Dust Explosion Protection:
  Certified for dust environments (DIP A20), enabling dual protection against both gas and dust hazards.

   

  Precision-Machined Flameproof Joints:
  Incorporates flat and spigot (flamepath) joint structures with strictly compliant flameproof gaps, ensuring an exceptionally high safety margin.

• 02

  Protection, Corrosion Resistance, and Durability

  IP66 Protection Rating:
  Ensures stable operation in outdoor, humid, and dusty environments, with excellent resistance to water ingress, dust, and aging.

   

  Optional Materials:
  Available in aluminum alloy, 304 stainless steel, or 316 stainless steel. Supports WF1/WF2 anti-corrosion ratings, providing strong resistance to acids, alkalis, and salt spray.

   

  Reliable Sealing Structure:
  Utilizes silicone rubber sealing combined with a labyrinth (flamepath) structure, ensuring dependable sealing performance. Offers strong resistance to impact and vibration, with a long service life.

• 03

  Excellent Electrical Performance

  High Current Capacity:
  Rated up to ≤600A, meeting the requirements of industrial power circuits.

   

  Dedicated High-Current Terminals:
  Featuring low contact resistance and minimal heat generation, ensuring secure connections and convenient maintenance.

   

  Compliant Clearance and Creepage Distances:
  Designed in accordance with standards, providing strong insulation performance and effectively eliminating risks of short circuits and leakage.

• 04

  Convenient Installation and Operation

  Modular Design:
  The number of circuits, cable entries/exits, and mounting methods (wall-mounted or floor-mounted) can be customized as required.

   

  Cable Entry Threads:
  Available in G1/2 to G2 (metric, BSP, or NPT), equipped with explosion-proof cable glands.

   

  Easy Access and Efficient Wiring:
  Quick-opening cover and well-organized internal layout ensure high efficiency for on-site installation, maintenance, and future expansion.

• 05

  High Customization and Versatility

  Flexible Customization Options:
  Supports non-standard customization of dimensions, circuit configurations, terminals, materials, and protection ratings to meet specific project requirements.

   

  Broad Wiring Compatibility:
  Compatible with steel conduit, cables, and explosion-proof flexible conduits, making it suitable for a wide range of industrial power distribution systems.

   

  Multi-Functional Integration:
  Can be equipped with additional components such as circuit breakers, surge protection devices, instruments, and switches to meet diverse functional requirements.

• 06

  Brand and Quality Assurance

  Trusted Manufacturer:
  LD Electric is a high-tech enterprise with comprehensive explosion-proof certifications and ISO management system certification.

   

  Rigorous Quality Control:
  Full-process quality inspection ensures suitability for demanding environments such as chemical, gas, and military applications.

   

  Proven Industry Experience:
  Extensive experience in flameproof and explosion-proof projects ensures reliable performance, long-term stability, and high safety standards.

Normal Operating Conditions

Technical Parameter

Enclosure Overall Dimensions and Related Parameters