Large Electrical Junction Box Manufacture
High-capacity electrical junction boxes engineered for industrial control panels, power distribution systems, and complex wiring environments.
Key Features and Advantages
Engineered for extreme environments with IP65/IP67 protection, corrosion resistance, and full customization for wind, solar, EV charging, and industrial automation applications.
Large internal wiring space for high-capacity cable routing
Robust construction for industrial and commercial environments
Flexible knockout and cable entry configurations
Improved heat dissipation and cable organization
Enhanced safety and compliance with electrical standards
Why Choose Linkwell Large Electrical Junction Box?
As a manufacturer of electrical cabinet components, we provide OEM and ODM services for large electrical junction boxes.
Maximum Protection
IP65/IP67 rated for complete dust and water ingress protection. NEMA 4/4X certified for indoor/outdoor industrial use. Corrosion-resistant materials for harsh environments.
Full Customization
Tailored dimensions, materials, cut-outs, and mounting options. Integrated internal component layouts with our ventilation, wiring, and thermal management systems.
Global Certifications
UL listed, CE, ATEX, IECEx, NEMA compliant. Meets international standards for safety and performance across North America, Europe, and global markets.
One-Stop Integration
Complete cabinet solutions with pre-installed fans, filters, terminal blocks, and wiring ducts. Simplified procurement from a single trusted manufacturer.
Technical Specifications
Our large electrical enclosures are engineered to meet the most demanding industrial requirements with precision and reliability.
| Parameter | Specification | Options / Availability |
|---|---|---|
| Material Construction | PC-ALLOY Composite / Stainless Steel 304/316 | Fiberglass Reinforced Polyester, Aluminum |
| Protection Rating | IP65, IP66, IP67 (Standard) | IP68, IP69K (Available) |
| NEMA Equivalent | NEMA 4, 4X, 12 | NEMA 6, 6P (Optional) |
| Temperature Range | -40°C to +85°C | -60°C to +120°C (Special Order) |
| Standard Sizes | 500x400x200mm to 2000x1800x800mm | Fully Customizable Dimensions |
| UV Resistance | Excellent (Outdoor Rated) | UV-Stabilized Materials Standard |
| Color Options | RAL 7032, 7035 (Standard Gray) | Any RAL Color Available |
| Mounting Options | Wall, Pole, Floor, Rack | Custom Brackets & Hardware |
Industry Applications
Our large electrical enclosures protect critical systems across diverse industries with specialized solutions for each application.
Wind Power Generation
Vibration-resistant enclosures for turbine control systems, designed for extreme temperature fluctuations and corrosive coastal environments.
Solar & Photovoltaic
UV-resistant enclosures for inverters and combiner boxes, with optimized thermal management for prolonged sun exposure.
EV Charging Stations
Robust outdoor enclosures for charging controllers and payment systems, with security features and vandal resistance.
Certificate
OurLarge Electrical Junction Box meets CE, UL, and ISO standards for global compliance.
Linkwell Factory
Linkwell combines 15+ years of engineering expertise with strict quality control. We deliver durable, efficient, and Large Electrical Junction Box backed by global certification and dedicated technical support for your industrial needs.
What are the Benefits of Large Electrical Junction Box?
- Customizable box dimensions and depth
- Multiple cable entry points and knockout sizes
- Support for high wire-fill capacity
- Internal mounting plates, DIN rails, or terminal supports
FAQ of Large Electrical Junction Box
What is considered a “large” electrical junction box?
A large electrical junction box is defined by its expanded internal volume and wiring capacity, not just its external dimensions. It is designed to accommodate multiple conductors, larger cable diameters, terminal blocks, and complex branch circuits where standard junction boxes are insufficient.
In industrial applications, a junction box is typically considered “large” when it:
Supports high wire-fill requirements
Provides sufficient bending radius for power and control cables
Allows safe separation of multiple circuits
Large junction boxes are commonly used inside control cabinets, distribution panels, and machinery wiring systems.
What are large electrical junction boxes commonly used for?
Large electrical junction boxes are widely used in:
Industrial automation and control panels
Power distribution and branch circuit management
Machine and equipment wiring integration
Commercial building electrical systems
Outdoor electrical installations requiring protection
Their main purpose is to centralize connections, improve wire organization, and enhance electrical safety in systems with high wiring density.
What materials are available for large electrical junction boxes?
Large electrical junction boxes can be manufactured in several materials depending on the application environment:
Steel: High strength and excellent grounding, ideal for industrial control cabinets
Stainless Steel: Superior corrosion resistance for harsh or outdoor environments
Aluminum: Lightweight with good corrosion resistance
Engineering Plastic: Non-conductive, lightweight, and corrosion-resistant for indoor or low-voltage systems
Material selection directly affects durability, weight, grounding performance, and compliance requirements.
How do large junction boxes improve electrical safety?
Large junction boxes enhance safety by:
Preventing overcrowding of conductors
Maintaining proper cable bend radius
Reducing heat buildup from tightly packed wiring
Providing secure grounding and bonding points
Protecting connections from dust, moisture, and mechanical damage
Adequate internal space significantly reduces the risk of overheating, insulation damage, and code violations.
Are large electrical junction boxes customizable?
Yes. Large electrical junction boxes are often customized to meet specific project requirements. Customization options typically include:
Box dimensions and depth
Number, size, and position of knockouts or cable entries
Internal mounting plates or DIN rails
Material type and surface treatment
Branding, labeling, and packaging
Customization is especially important for OEM projects, panel builders, and system integrators.
