Specifications of Indoor Distribution Box

Indoor distribution boxes are modular enclosures designed for safe electrical or telecommunication connections, typically made of steel or ABS, with IP20–IP65 protection, lockable doors, and flexible mounting options.

Materials and Construction

Indoor distribution boxes are commonly made from lightweight steel, ABS, or polycarbonate, often halogen-free for safety . Steel boxes are usually painted grey (RAL 7032 or RAL 7035) and may include stainless steel backmount frames for supporting modules . ABS or PC versions provide robust, lightweight enclosures with UV protection for durability . The boxes feature removable and lockable doors with 180-degree access, and some allow door hinging on either side depending on installation requirements .

Protection and Standards

• Ingress Protection (IP): Indoor boxes typically have IP20, while some models designed for harsher environments reach IP65 .
• Impact Resistance: Certain enclosures comply with IEC 62262 IK10, providing high mechanical protection .
• Compliance: Many boxes adhere to low voltage directives (2014/35/EU) and DIN standards for electrical safety .

Capacity and Modularity

• Boxes are available in various module capacities, e.g., 4, 6, 8, 12, 18, 24, 36, and 54 modules for electrical MCBs or LSA-PLUS® telecommunication modules .
• LSA-PLUS® boxes support 100-, 200-, 400-pair modules, with jumper rings for organized cable management .
• Electrical distribution boards allow incoming devices such as Switch Disconnectors, MCCBs, MCBs, RCCBs, or direct cable connections .
• Modular DIN rails (TH35x7.5) are standard for mounting protection devices and components .

Mounting and Installation

• Boxes can be wall-mounted or installed in compact frames, with adjustable studs and nuts for easy pan assembly removal .
• Doors are removable for installation and can be hinged left or right .
• Some enclosures provide top/bottom gland plates for cable entry and exit, with bend radius protection and tie positions for strength members in fiber applications .
• Generous wiring space and self-aligning features simplify installation and maintenance .

Additional Features

• Lockable doors for security, sometimes keyed alike across multiple boxes .
• Document storage inside doors for installation records .
• Overvoltage protection options for telecommunication boxes .
• Factory-fitted or installer-configurable incoming devices for electrical boards . These specifications ensure that indoor distribution boxes provide safe, flexible, and modular solutions for residential, commercial, and infrastructure electrical or telecommunication installations.