Wall-mounted primary distribution boxes are designed to safely distribute electrical power to multiple circuits, offering modularity, high protection levels, and adaptability for indoor and outdoor use.

Key Specifications

• Voltage and Current Ratings: Typical rated voltage ranges from 400V to 1000V DC, with rated currents from 75A to 250A depending on the model and configuration (Selhot SHXC Series) .
• Protection Features: Overload long-delay protection, short-circuit instantaneous protection, and earth leakage safeguards are standard to prevent equipment damage and ensure user safety .
• IP and IK Ratings: Protection levels vary by model; for example, SHXC Series offers IP65 (waterproof and dustproof), PHBG Series IP44, and nVent HOFFMAN EPS enclosures IP66 with IK10 impact resistance .
• Material and Construction: Common materials include ABS, polycarbonate (PC), and mild steel with epoxy-polyester powder coating. These materials provide UV resistance, flame retardancy, and high mechanical strength .
• Environmental Adaptability: Suitable for indoor and outdoor installations, with operating temperatures typically ranging from -25°C to +80°C and humidity tolerance according to standards .

Models and Series

• SHXC Series (Selhot Electric): Features a 4-way modular design, supports DC circuit breakers up to 500V/250A, and includes options for isolation switches and surge protection devices. Transparent covers allow easy observation and maintenance .
• PHBG Series: Offers modular splicing design, customizable sizes, and high-impact polycarbonate enclosures. Suitable for industrial production lines, outdoor work areas, aerospace facilities, and research laboratories .
• CHINT Final Distribution Boards: Designed for residential, commercial, and industrial applications, equipped with circuit breakers, earth leakage protection, and overload safeguards. Modular design allows easy upgrades and maintenance .
• nVent HOFFMAN EPS Enclosures: Mild steel wall-mounted enclosures with modular sections, compatible accessories, and compliance with IEC 62208 and EN 61439 standards. Available in 600mm and 800mm widths, ideal for small power distribution panels .

Features and Advantages

• Modularity: Many models allow internal sections to be divided for different components, facilitating upgrades and maintenance .
• Safety: Finger-safe designs, flame-retardant materials, and protective devices minimize electrical hazards .
• Customization: Sizes, colors, and internal configurations can be tailored to specific project requirements .
• Durability: High-quality materials and IP/IK ratings ensure long-term performance in harsh environments .

Applications

• Residential and Commercial Buildings: Safe distribution of electricity to multiple circuits, with easy maintenance and monitoring .
• Industrial Facilities: Control and distribution of power for production lines, workshops, and outdoor installations .
• Specialized Environments: Aerospace, research laboratories, and outdoor infrastructure projects requiring high safety and environmental resistance . Wall-mounted primary distribution boxes provide a reliable, safe, and flexible solution for managing electrical power across various applications, with multiple models and specifications to suit different operational and environmental requirements.