Why Choose Jushun as Your Junction Box Supplier in China?

  • With over 20 years of experience in sheet metal enclosures manufacturing, Jushun is your trusted junction box manufacturer in China.
  • We offer strong OEM and ODM capabilities (customizable dimensions, materials, mounting methods, and accessories).
  • We can handle large-scale production with short lead times, and our export packaging meets international standards.
  • Quality assurance: NEMA and IP-rated enclosures
  • Customizable accessories (hinged covers, screw-down covers, transparent covers, and knockouts)
Junction Box

Junction Box

  • NEMA 1 / 3R / 4 / 4X / 12
  • IP65 / IP66 / IP67
  • CE / RoHS / UL

What is the purpose of a junction box?

To us custom enclosure manufacturers, a junction box is essentially a type of electrical enclosure. However, a junction box also has its own unique function: protecting indoor, outdoor, and underground wiring from environmental influences. Because operators can’t always monitor the wiring, damage, whether human or natural, is often unpredictable. Fire, moisture, and external damage are crucial. This is where the protection of an enclosures comes in.


Junction Box Applications

Outdoor Lighting

Outdoor lighting junction enclosures protect all wiring connections from rain, dust, and corrosion. Our junction boxes feature a NEMA/IP-rated waterproof design, ensuring a secure and durable outdoor lighting system.

Security camera housing

A reliable enclosure helps conceal cable connections and protects them from tampering, weather, and rodents. Jushun also offers wall-mounted and pole-mounted boxes for easy installation in a variety of indoor and outdoor environments.

Transportation Equipment

Transportation systems require strong wire protection against the influence from vibration, moisture, and temperature fluctuations. Our custom enclosures are widely used in EV charging stations (EV charging enclosures), and traffic control systems to ensure long-term safety and performance for inside equipment.

Industrial Automation

Junction housings protect control wiring, PLCs, and sensors in industrial control systems. Moreover, our metal junction boxes, made of steel or aluminum, which can offer superior impact resistance, flameproofing, and grounding options for industry.

Solar Equipment

Solar panel junction boxes are essential for connecting solar panels and protecting DC lines. Our solar casings are designed with excellent heat resistance, UV protection, and weatherproof sealing to ensure stable power transmission.

Feature Box

Moisture-proof

Security

Assembleable

Fire
prevention

Impact -resistant and durable

Weather and hazard resistance

Types We Offer

  • Metal Junction Enclosure
  • Wall-Mount Junction Box
  • Pole-Mount Junction Box
  • Hinged Junction Enclosure
  • Waterproof Junction Casing (Outdoor Use, NEMA / IP Rated)

Metal Junction Box or Plastic Junction Box?

Metal :

Jushun specializes in producing metal junction boxes. Our cabinets are suitable for various industrial, outdoor and heavy-duty environments. Also,metal has a good performance in hard-wearing, anti-corrosion, fire resistance, impact-resistant. What’s more, our grounded electrical enclosures reduce the risk of electric shock and fire hazards.

Metal Junction Box or Plastic Junction Box
difference between an enclosure and a junction box

Plastic :

Of course, if you are dealing with indoor, small circuits, then the lightweight, rust-proof, and economical plastic junction box is also a good choice. But it is worth noting,some types of non-metallic casings do not adhere to grounding regulations and local building codes, and some can’t handle the generated heat. 


What Is the Difference Between an Enclosure and a Junction Box?

As mentioned above, a junction box is a type of electrical enclosure, but its purpose is more specific: to protect wire connections or cables. Therefore, Jushun’s junction boxes prioritize material durability. However, electrical enclosures have a wider range of uses. Because electrical enclosures sometimes need to house various important devices, we need to adjust the cabinet’s material, size, and thickness based on the specific needs of each device.

enclosure vs.junction box

FAQs

Can I customize the size and knockouts of the box?

Of course, we will provide a series of customized services and communication before design and production. In order to facilitate transportation, we can also provide installation services before packaging.

Our customized customers have different requirements for certificates, but please rest assured that we can send the products to relevant institutions for inspection according to your needs and apply for the certificates you need.


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