FZH Type Explosion-Proof Terminal Junction Box
The FZH type explosion-proof terminal junction box is specifically designed for the safe terminal sealing of electric heat tracing systems. It reliably isolates the tail end of the heating cable, provides explosion-proof protection, and is suitable for hazardous areas in industries such as petroleum and chemical. It serves as the endpoint safeguard for the safe operation of heat tracing circuits.
This product, also known as a terminal seal, is a terminal sealing junction box used for self-regulating heating cables. Its core function is to completely isolate the end of the heating cable from the external environment, preventing moisture intrusion and potential electrical risks. All installation materials for the heat tracing cable end can be accommodated within the box. The product complies with strict explosion-proof standards, is specifically designed for explosive gas atmospheres in factory Zone 1 and Zone 2, and ensures long-term safe operation in harsh weather and hazardous locations.
Main Industries: Petroleum, chemical, natural gas, pharmaceutical, and other industries with explosion risks.
Hazardous Areas: Applicable in explosive gas atmosphere Zone 1, Zone 2, for locations with gas group IIC and temperature group T4.
Environmental Conditions: Suitable for all-weather conditions, with good environmental tolerance.
Specific Uses: Serves as an essential sealing and protection component for the end of any electric heat tracing system (especially self-regulating heating cables), used at the termination point of heat tracing circuits for pipelines, tanks, and valves.
Intrinsic Safety Terminal Seal: Completely isolates the heating cable end, prevents electrical short circuits and leakage, and blocks the intrusion of moisture and corrosive media, ensuring the safety and lifespan of the entire heat tracing circuit.
High-Level Explosion-Proof Protection: The explosion-proof marking is Ex e IIC T6 Gb, providing "Increased Safety" type explosion-proof protection. It is suitable for the highest-level IIC gas environments, and is safe and reliable.
All-Weather Durable Design: Robust structure, good sealing performance, capable of withstanding outdoor harsh weather conditions such as rain, snow, and sun exposure.
Convenient Integrated Installation: The internal space of the box is rationally designed and can accommodate all materials required for processing the heating cable end (insulation, sealing, etc.). The installation steps are clear and standardized.
Clear Safety Warnings: Emphasizes key installation requirements such as "strictly prohibit twisting the tail end," guiding correct operation from the design to avoid installation errors.
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Item |
Specification/Description |
|---|---|
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Product Model |
FZH Type Explosion-Proof Terminal Junction Box (Terminal Seal) |
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Rated Voltage |
Suitable for the voltage of the associated heating cable system (e.g., 220V/380V, etc.) |
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Explosion-Proof Marking |
Ex e IIC T6 Gb |
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Explosion-Proof Type |
Increased Safety Type (e) |
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Equipment Protection Level (EPL) |
Gb |
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Gas Group |
IIC (includes hydrogen, acetylene, etc.) |
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Temperature Group |
T6 (Equipment maximum surface temperature ≤85°C) / Applicable in T4 group locations |
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Applicable Area |
Explosive gas atmosphere Zone 1, Zone 2 |
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Protection Rating (IP) |
IP54 or higher (inferred based on all-weather application) |
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Housing Material |
Engineering Plastic (usually reinforced nylon or polycarbonate) |
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Main Purpose |
Explosion-proof sealing and protection for the end of heating cables (self-regulating heating cables) |
Standard Configuration: The product is a standard terminal sealing box, including the box body, cover, sealing gasket, pressure plate, and fasteners required for installation.
Optional Accessories: May include adapters for cable entry (glands) of different specifications to meet the entry sealing requirements for heating cables with different outer diameters or armored layers.
Customization Service: Not explicitly mentioned in the product information. For special applications (such as extremely high anti-corrosion requirements, non-standard installation dimensions, or the need for specific certifications), it is recommended to contact the manufacturer directly to inquire about customization feasibility.
FAQ
Can this terminal junction box be used outdoors or in extreme weather?
Yes. This product is designed for all-weather conditions. Its sealed structure effectively protects against dust and water splashes and can withstand general outdoor environments such as rain, snow, and sun, ensuring safe and reliable operation at the end of electric heat tracing systems in open-air plants in industries like petroleum and chemical.











