Functions of Electrical Junction Box

The primary function of an Electrical Junction Box is to distribute electrical energy received from transformers, solar power systems, or LT panels to connected loads.

Key functions include:

• Safe distribution of electrical power using busbars and cables

• Protection of cable joints and electrical connections

• Organized routing of incoming and outgoing circuits

• Acting as a basic Array Junction Box (AJB) in solar power systems

• Supporting LT power distribution systems efficiently

Features

All AAVAD Electrical Junction Boxes undergo advanced surface pretreatment processes, including:

• Degreasing

• Water rinsing

• De-rusting

• Phosphating

After pretreatment, enclosures are finished with powder coating or synthetic enamel painting as per customer requirements. The manufacturing process follows a seven-tank treatment system, ensuring superior corrosion resistance.

Additional features include:

• High-quality busbars with uniform cross-section

• Internal wiring supported by SMC and DMC bases

• Dedicated earthing busbars running throughout the panel

These features make AAVAD Electrical Junction Boxes an essential part of electrical control panels and LT panels.

Basic of Electrical Junction Box (AJB)

An AJB (Array Junction Box) is an effective electrical enclosure used in low-voltage distribution applications. Mini AJBs play a vital role in almost all types of electrical panel boards by providing safe termination, protection, and distribution of electrical circuits.

Standards

AAVAD Electrical Junction Boxes are designed and manufactured in compliance with Indian and international electrical standards, ensuring safety and reliability:

• IEC 60947 Part I, II & III

• IS 60947 Part I, II & III

• IS 8623

• IEC 60529

All switches, circuit breakers, and connectors used in the junction boxes conform to the above standards.

Specifications

• Designed for ambient temperatures up to 45°C

• Suitable for environments with up to 80% humidity and dusty conditions

• Indoor Junction Boxes: Protection level IP54 or higher

• Outdoor Junction Boxes: Protection level IP65 or higher

• Robust MS / CRCA steel enclosure

• Powder-coated finish for corrosion resistance

Applications

AAVAD Electrical Junction Boxes are widely used in:

• Solar power systems (Array Junction Box – AJB)

• Transformer to LT panel cable distribution

• Industrial electrical installations

• Residential and commercial buildings

• Infrastructure and utility projects

• Electrical control panels and LT panels

In solar power systems, the Array Junction Box plays a crucial role in power collection and safe distribution. In LT systems, junction boxes help reduce cable length and improve system efficiency.