Series Mining Intrinsic Safety Circuit Junction Box Jhh3/4

• Type: Distribution Metering Box
• Structure: Protection
• Form: All- packaged Type
• Model NO.: JHH3/4
• Operation Voltage: Low Voltage
• Application Range: Coal,Electric Power,Metallurgy,
• Shell Material: Cast Iron
• Shell Protection Grade: IP54
• Transport Package: Wooden Box
• Specification: 184*110*48
• Trademark: Ruitop
• Origin: China
• HS Code: 8537209000
• Production Capacity: 10000 Sets/Month

Product Description

Detailed Photos

 

Use:
This  series junction  box  is  applicable  in  coal  mine  where  is  filed with  explosive  gas  such  as  methane,coaldust  and  so  on,mainly  is  used as  cable  junction  box  to  connect  intrinsic  safety  circuit  among  the  electric  apparatus,can  only  be  used  for  connection  of  intrinsic  safety circuit.
Technical    Descriptions:
The   product   is   safe,reliable    and    convenient   for    use,with    small    size,light   weight,high    intensity,good    insulating    property   and so  on.
Main  Technical  Data:

Type	Quantity of cable	External diameter of cable(Φmm)	Outline dimension L×W×H(mm)	Weight (KG)
JHH2 Pairs	2	6-12	184×110×48	0.55
JHH3 Pairs	3	6-12	184×147×48	0.6
JHH4 Pairs	4	6-12	186×138×48	0.65

Company Profile

Ruitop GlobalTrade (Shanghai) Co., Ltd.: Led by scientific and technological innovation, creating a model of excellence in the industry

The company focuses on the R&D and production of a series of high-performance products. In the field of professional lighting, for scenarios with complex environment and high reliability requirements, it has launched professional lighting products with special properties such as waterproof, dustproof, shockproof, explosion-proof, etc., to provide stable and reliable light source guarantee for all kinds of harsh environment operations. Coal mine explosion-proof lamps, explosion-proof electrical appliances, explosion-proof transformers, explosion-proof fans, explosion-proof switches, complete sets of switch cabinets, underground intelligent automation integration and other coal mine-related products ensure the safety and efficiency of coal mine operations with excellent quality. Polyurethane rubber rollers and rubber wheels are rich and diverse, covering customized monorail crane rubber wheels, shield machine polyurethane rubber wheels, etc., and can also provide a variety of non-standard customized products and accessories according to customer needs. In addition, products such as plastic products and synthetic materials also demonstrate the company's expertise in the field of materials.

The company's products are widely used in various fields such as electric power, railway, emergency rescue, petroleum, coal, metallurgy, municipal, shipbuilding, ports, and military , playing a significant role .

Ruitop GlobalTrade has built a sales and service network all over the country and abroad, no matter where the customer is, the company can quickly respond to the demand, with professional, high-quality, efficient service.

Packaging & Shipping

FAQ

Q1.What is a mining explosion-proof vacuum circuit breaker?
A.mining explosion-proof vacuum circuit breaker is a specialized electrical device designed to safely interrupt power in hazardous mining environments. It uses vacuum interrupters to extinguish arcs and is housed in a robust, flameproof enclosure to prevent ignition of flammable gases or dust.

Q2.How does the explosion-proof design work? 
The enclosure is engineered to withstand internal explosions caused by electrical faults. Any flames or pressure generated are contained and cooled within the housing, preventing external ignition of hazardous gases.

Q3.How often should maintenance be performed?
Routine inspections (every 6-12 months) are recommended to check contact wear, insulation integrity, and mechanical components. Harsh conditions may require more frequent checks.

Q4. What is the role of an electromagnetic starter in mining?
An electromagnetic starter controls the power supply to heavy-duty mining equipment (e.g., conveyors, pumps). It provides safe motor starting/stopping, overload protection, and short-circuit prevention.

Q5. How does it differ from a standard starter?
Mining-grade starters feature reinforced enclosures for explosion protection, corrosion resistance, and enhanced thermal tolerance. They often integrate advanced diagnostics for fault detection.