Electrical & Instrument Junction Boxes for Safe Field Connections

A junction box is an enclosure used to safely terminate and distribute power, control or instrumentation wiring at cable junction points. It provides protection, organisation and easier troubleshooting for field circuits.

Use a junction box when you need to extend wiring, add connection points, or route multiple conduits into one location, while keeping terminations protected and compliant.

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Materials
SS316 • MS
Protection
IP65
Junction box enclosure for electrical and instrumentation wiring

Built for indoor and outdoor use

Custom sizes and layouts for cable entry, terminal blocks, nameplates and mounting, aligned to your site requirements.

What we provide

Design, Manufacture and Supply of Junction Boxes

iEngineering can manufacture and supply electrical and instrument junction boxes in stainless steel 316, mild steel and other materials, with IP65 protection for harsh environments.

Junction boxes serve as connection points for power, control and instrumentation wiring and help make fault detection and repair easier by centralising terminations and labelling.

  • Custom sizes and layouts for site wiring
  • Electrical and instrument junction box variants
  • Material options: SS316 and mild steel
  • IP65 protection for indoor and outdoor installations
IP65 protection
Terminal blocks and wiring
According to AS/NZS standards
Power, control and instrumentation
Product range

Junction Box Types

Choose the right junction box based on circuit purpose, environment and internal arrangement.

Electrical

Electrical Junction Boxes

Designed for power and control wiring terminations. Built to suit indoor and outdoor installations with protection and layout matched to your site requirements.

Power and control Custom build
Read more
Instrumentation

Instrument Junction Boxes

Designed for instrument signal wiring and field device terminations. Suitable for outdoor signal wiring with practical internal wiring and termination arrangement.

Signal wiring Field terminations
Read more

Type 1

Electrical Junction Boxes

Electrical junction boxes are used as safe connection points for power and control wiring. They help with cable routing, branching circuits, isolation coordination and easier fault finding by centralising terminations.

  • Used for power and control wiring terminations
  • Custom enclosure size and gland entry layout
  • Designed for indoor and outdoor installations
  • Options for terminals, labels and internal wiring arrangement
Enquire about Electrical JB
Electrical junction box with cable glands and terminal blocks
Instrument junction box for field device signal wiring

Type 2

Instrument Junction Boxes

Instrument junction boxes are used for signal wiring and field device terminations. They are commonly used across industrial facilities to bring multiple instrument cables into one organised, labelled termination point.

  • Used for instrument signal wiring and field terminations
  • Supports clean layout for multiple field devices
  • Suitable for outdoor signal wiring when correctly sealed
  • Options for terminals, labels, internal wiring and mounting
Enquire about Instrument JB

How we work

Junction Box Delivery Workflow

We follow a structured process to make sure your junction boxes arrive site-ready with the correct layout, terminations and protection level.

Share your wiring philosophy, I O list, cable schedule, gland requirements and installation location. We will align the enclosure design to your environment and maintenance needs.

  1. 1

    Requirements and Environment

    Confirm indoor or outdoor location, cable entry direction, number of cores, terminals, labels, and IP rating expectations.

  2. 2

    Enclosure Design and Layout

    Select material (SS316 or mild steel), size, gland plate arrangement, terminal blocks and internal wiring layout.

  3. 3

    Manufacture and Assembly

    Fabrication, finishing, drilling and fitment of hardware including hinges, latches, bolts and accessories. Assembly of terminals and identification as required.

  4. 4

    QA and Supply Coordination

    Basic checks for enclosure sealing, fit, labeling and delivery readiness, followed by packing and dispatch to site.

Past Project Experience

Project 2 Description 2020

Supply of 60 × Stainless-Steel Junction Boxes

Location : NSW Australia

Scope of Work: Supply of fully customised SS junction boxes integrated with prewired electrical panels for harsh-environment applications.

Supply & installation 2 x 11 KV Junction Boxes 2024

Supply & installation 2 x 11 KV Junction Boxes

Location : Nauru

Scope of Work: Supply installation of 2 x 11 KV Outdoor Junction boxes to utility.

Installation notes

Where Junction Boxes Are Typically Located

Common placement depends on duct runs, instrument field distribution and accessibility for maintenance.

Duct and Conduit Intersections

Installed at intersections of duct runs to provide a safe termination and routing point.

Across Process Facilities

Used to connect multiple field instruments to control systems and distributed panels.

Aligned to Baselines and Routing

Locations are coordinated along routing baselines so duct patterns remain consistent and maintainable.

Outdoor Signal Wiring Points

Outdoor instrument signal wiring JBs should be fully installed with mounting, hardware, nameplates, terminal blocks and wiring.

Maintenance Access Areas

Placed where technicians can isolate, test and repair circuits without disturbing upstream cables.

Indoor and Outdoor Use

Junction boxes are used both indoors and outdoors as connection points for power, control and instrumentation.

About us

About us – where vision meets execution!

iEngineering is your trusted partner for advanced electrical and energy solutions across Australia, Fiji, and India. We deliver high-quality hardware products backed by expert engineering, reliable installation and dedicated local support.

Our Mission

Our mission is to enhance efficiency, ensure quality control, and deliver customer satisfaction through practical engineering solutions aligned to global standards and sustainable outcomes.

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Our Vision

To be a trusted engineering partner across Australia, Fiji, India and the Pacific, delivering resilient and low-carbon infrastructure for utilities, industry and the built environment.

Strategic vision graphic

Our Values

We operate with integrity, safety and accountability, focusing on clear communication and long-term partnerships so every delivery is maintainable and dependable.

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Our Journey

Founded in 2013, iEngineering Australia delivers a comprehensive range of high-quality electrical and energy hardware solutions tailored for Australian and Pacific conditions. From design and engineering to manufacturing, testing, and commissioning support, we ensure every product—whether switchboards, transformers, oil filtration machines, solar systems, or EV chargers—is safe, reliable, and built to last.

Where We Operate

iEngineering Australia operates across Australia, Fiji, and India, delivering reliable technology and asset management solutions to organisations of all sizes—from local enterprises to large multinational companies.

India – Pune

Phone: +91 9168627258

Email: shila@iengaust.com.au

Navale IT Zone, Office No. 501, 5th Floor, A-Wing, Near Navale Bridge, Mumbai-Bangalore Highway, Narhe, Pune – 411041.

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