North Asia Power Distribution Box Dimensions and Specifications

Power distribution boxes in North Asia typically range from compact 2RU rack-mounted units to large outdoor IP55/IP65 enclosures, with dimensions and specifications tailored to load capacity and installation environment.

General Specifications

Materials and Construction:

• Boxes are commonly fabricated from 2 mm galvanized steel or sheet steel with epoxy polyester coating, providing durability and corrosion resistance .
• Panels may include flame-retardant ABS for internal components .
• Outdoor boxes often feature slanted roofs with overhangs to prevent water ingress and double-door arrangements with secure locking systems . Protection Ratings:
• IP55 is standard for outdoor LT distribution boxes, ensuring protection against dust and water jets .
• IP65/IP66 enclosures are available for higher protection against dust and water, suitable for residential, commercial, and project-based installations . Electrical Features:
• Boxes accommodate MCCBs (4-pole or 3-pole) for incoming and outgoing feeders, with overcurrent and short-circuit protection .
• Bus bars are typically copper or electrolytic aluminum, mounted on epoxy resin insulators, with provisions for neutral connections .
• Rated capacities vary: for example, 63 KVA, 100 KVA, and 200 KVA LTDBs have incomer MCCBs rated from 100 A to 400 A, with bus bar sizes from 25x6 mm to 50x8 mm . Dimensions:
• Small rack-mounted units like the Power-D-Box® are 2RU (88.9 mm height) and compact for front or rear load connections .
• Outdoor LT distribution boxes for 100–200 KVA transformers typically measure:
  • Height (A): 1000 mm
  • Width (B): 800 mm
  • Depth (C): 500 mm
  • Clearances and mounting provisions (D, E): 170–250 mm .
• General panel boxes range from 200x200x150 mm to 1400x1200x300 mm, depending on capacity and configuration . Installation and Mounting:
• Options include plinth-mounted, DP structure-mounted, flush-mounted, or surface-mounted on non-combustible walls .
• Boxes are designed for vertical installation, with proper grounding and ventilation provisions . Customization:
• Manufacturers offer custom configurations based on way count, rated current, internal layout, and environmental conditions .
• Optional features include manual locking, gland plates with sealing gaskets, and adjustable internal component spacing . Environmental Conditions:
• Suitable for altitudes up to 2,000 m, ambient temperatures from -25°C to +40°C, and temporary exposure up to +60°C during installation . In summary, North Asia power distribution boxes are designed with robust materials, high protection ratings, and flexible electrical configurations, ranging from compact rack-mounted units to large outdoor enclosures, with dimensions and specifications tailored to transformer capacity, installation environment, and safety standards .