Specifications and Models of Primary Distribution Box for Construction

Primary distribution boxes for construction sites are robust, pre-wired or modular units designed to safely distribute electricity with IP-rated enclosures, multiple outlets, and integrated protection for both equipment and personnel.

Key Specifications

Current Capacity: Construction site distribution boxes typically handle currents from 16 A to 63 A, accommodating both light and heavy-duty tools, machinery, and lighting systems. Voltage and Outlets: They provide 230 V single-phase and 400 V three-phase outlets, often using CEE industrial sockets compliant with IEC 60309 standards. Red sockets are used for three-phase power, while blue sockets are for single-phase connections.

Protection Features: Most units include individual circuit breakers, RCD (Residual Current Device) protection, and main fuses to isolate faults without shutting down the entire system. Emergency stop buttons are also common in outdoor models for rapid power disconnection. Environmental Protection: Enclosures are designed for harsh conditions, with IP65 or higher ratings, making them dust-tight and water-resistant.

Materials include technopolymer or thermoplastic for lightweight, fire-resistant, and reusable cabinets. Impact resistance is often rated IK08 to IK10, ensuring durability on busy construction sites. Mounting and Mobility: Distribution boxes can be wall-mounted, floor-standing, or mobile units on elevated stands.

Pre-wired assemblies allow quick installation and relocation between sites. Common Models and TypesENERGYBOX ACS Series: Pre-wired, wall-mounted or support-mounted technopolymer cabinets, suitable for civil building sites, outdoor events, and temporary installations. They are reusable and fire-resistant.

E-abel Outdoor Distribution Boxes: IP-rated enclosures with organized internal wiring, CEE socket layouts, emergency stop buttons, and project-specific customization for outdoor construction and event sites.

BLOC

K Series Assemblies: Thermoplastic enclosures with pre-wired options, high customization, and compliance with EN IEC 61439-1 and 61439-4 standards. Available with IP65/IP67 protection and IK08/IK10 impact resistance. Modipro Units: Mobile or fixed distribution boxes with multiple outlets, RCD protection, and high current capacity, designed for workshops, temporary installations, and construction sites.

Additional Features

Ease of Connection: Cross-divided inlet/outlet openings and folding strain relief clamps reduce installation time by up to 50%. Metering and Fuse Access: Flip-up covers allow safe access to fuses and meters without removing the entire cover. Temperature Range: Designed to operate in typical outdoor construction environments, often supporting 50/60 Hz frequency.

These specifications and models ensure that construction site distribution boxes provide safe, flexible, and reliable power distribution, protecting both workers and equipment while complying with international safety standards.