---
product_id: 67009834
title: "380mm x 300mm x 120mm Large Junction Box IP56 Weatherproof Waterproof Enclosure with Plain Sides"
brand: "esr"
price: "€ 103.50"
currency: EUR
in_stock: true
reviews_count: 13
category: "Esr"
url: https://www.desertcart.hr/products/67009834-380mm-x-300mm-x-120mm-large-junction-box-ip56-weatherproof
store_origin: HR
region: Croatia
---

# IP56 water & dust resistance Reinforced ribbed structure Customizable plain sides 380mm x 300mm x 120mm Large Junction Box IP56 Weatherproof Waterproof Enclosure with Plain Sides

**Brand:** esr
**Price:** € 103.50
**Availability:** ✅ In Stock

## Summary

> 🔒 Secure your connections, rain or shine — the pro’s choice for weatherproof power!

## Quick Answers

- **What is this?** 380mm x 300mm x 120mm Large Junction Box IP56 Weatherproof Waterproof Enclosure with Plain Sides by esr
- **How much does it cost?** € 103.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/67009834-380mm-x-300mm-x-120mm-large-junction-box-ip56-weatherproof)

## Best For

- esr enthusiasts

## Why This Product

- Trusted esr brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rust-Free Convenience:** Plastic screws prevent corrosion, maintaining integrity in any environment.
- • **Built to Last with PVC Power:** Robust, halogen-free PVC construction ensures impact resistance and fire safety.
- • **Ultimate Weatherproof Shield:** IP56 rating defends against dust and powerful water jets for unmatched durability.
- • **Spacious & Adaptable Interior:** Generous 380x300x120mm size fits complex wiring with room to customize cable entries.
- • **Effortless Access & Installation:** Innovative hinge design allows quick lid opening with just two screws.

## Overview

This large 380x300x120mm junction box combines IP56-rated protection with durable, halogen-free PVC construction. Its plain sides enable tailored cable entry, while reinforced internal ribbing ensures structural strength. Designed for indoor and outdoor use, it features rust-resistant plastic screws and an easy-access hinge, making it ideal for professional-grade electrical installations in demanding environments.

## Description

Keep your electrical connections safe with this IP56 Weatherproof Junction Box. Made from halogen-free PVC, our waterproof junction box ideal for indoor and outdoor use, offering protection against dust, water jets, and corrosion. Designed for durability and flexibility, it features plain sides for custom cable entry, internal ribbing for strength, and plastic screws to prevent rust – perfect for residential, commercial, or industrial setups.Features:IP56 Rated: Protects against dust and high-pressure water jetsLarge Size: 380 x 300 x 120mm for spacious internal capacityDurable PVC Construction: Strong, impact-resistant, and weatherproofHalogen-Free Plastic: Safer in case of fire, low smoke emissionPlain Sides (No Knockouts): Customize cable entry exactly where neededReinforced Internal Ribbing: Enhances structural strength and stabilityRust-Free Plastic Screws: Prevent corrosion over timeEasy-Access Hinge Option: Open lid easily by fixing just two screwsVersatile Application: Suitable for electrical controls, cable joints, switchesIndoor & Outdoor Use: This adaptable enclosure ideal for homes, offices, factories, and more

Review: Good strong waterproof box - Exactly what I needed.
Review: Good quality plastic box - Excellent quality plastic box nice and sturdy what more can I say 👍🏻

## Features

- 𝐃𝐮𝐫𝐚𝐛𝐥𝐞 𝐏𝐕𝐂 𝐂𝐨𝐧𝐬𝐭𝐫𝐮𝐜𝐭𝐢𝐨𝐧: Our waterproof electrical junction box is made from robust Polyvinyl Chloride (PVC), this adaptable enclosure offers excellent resistance against water and harsh weather conditions. Ideal for both indoor and outdoor use, providing long-lasting protection.
- 𝐂𝐮𝐬𝐭𝐨𝐦𝐢𝐳𝐚𝐛𝐥𝐞 𝐃𝐞𝐬𝐢𝐠𝐧: With generous internal dimensions (380 x 300 x 120mm) and external dimensions (400 x 320 x 130mm), our IP56 junction box accommodates complex wiring setups. It’s plain-sided design allows manual drilling for tailored cable entries and panel customization.
- 𝐈𝐏𝟓𝟔 𝐑𝐚𝐭𝐞𝐝 – 𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐏𝐫𝐨𝐭𝐞𝐜𝐭𝐢𝐨𝐧: ESR large junction box engineered with an IP56 rating, this weatherproof box safeguards internal components from dust and powerful water jets, making it perfect for demanding environments where safety and reliability are critical.
- 𝐑𝐞𝐢𝐧𝐟𝐨𝐫𝐜𝐞𝐝 𝐃𝐞𝐬𝐢𝐠𝐧: Our weatherproof junction box featuring reinforced ribbing on interior walls for structural rigidity, this halogen-free grey PVC enclosure includes plastic screws and a simple hinge function for easy access, just partially secure two screws to create a functional lid hinge.
- 𝐖𝐢𝐝𝐞 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧: This indoor-outdoor junction box is suitable for a variety of electrical connections including CCTV camera installations, LED strip setups, solar panel wiring, garden lighting, and road signage.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B66ZH1G |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 21,326 in DIY & Tools ( See Top 100 in DIY & Tools ) 57 in Surface Mounted Junction Boxes |
| Colour | Grey |
| Customer Reviews | 4.6 4.6 out of 5 stars (535) |
| Date First Available | 2 Mar. 2018 |
| Finish | Painted |
| Installation method | Screw-In |
| Item Weight | 1.42 kg |
| Item model number | 5060416802075 |
| Manufacturer | ESR |
| Material | Polyvinyl Chloride |
| Part number | ESR |
| Product Dimensions | 40 x 32 x 13 cm; 1.42 kg |
| Specification met | IP56 |
| Style | Protection |

## Product Details

- **Brand:** ESR
- **Colour:** Grey
- **Finish type:** Painted
- **Material:** Polyvinyl Chloride
- **Style:** Protection

## Images

![380mm x 300mm x 120mm Large Junction Box IP56 Weatherproof Waterproof Enclosure with Plain Sides - Image 1](https://m.media-amazon.com/images/I/817sRdMKqZL.jpg)

## Questions & Answers

**Q: Is there anywhere I can purchase replacement screws?**
A: they not available on it own

**Q: Is the grid at the back some sort of standard fixing mechanism? Are there specific things that can attach to the back?**
A: Four plastic retaining screws. I've got a six gang adaptor in mine. Run six water features from it. Very pleased with it. Very sturdy and watertight

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good strong waterproof box
*by B***Y on 18 September 2025*

Exactly what I needed.

### ⭐⭐⭐⭐⭐ Good quality plastic box
*by C***G on 15 November 2019*

Excellent quality plastic box nice and sturdy what more can I say 👍🏻

### ⭐⭐⭐⭐⭐ Larger than expected
*by J***S on 8 April 2021*

Being larger is actually no detriment, it allows me to mount a backing board inside and space out components, the main thing is to remember not to overtighten the lid screws they engage on a single spiral of thread which I imagine could easily strip if overtightened. As far as being weatherproof only the mounting screws to the wall look to be possible points of entry for water, something to keep an eye on. Along with the cable glands purchased at the same time it looks a very professional set-up , very pleased

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.hr/products/67009834-380mm-x-300mm-x-120mm-large-junction-box-ip56-weatherproof](https://www.desertcart.hr/products/67009834-380mm-x-300mm-x-120mm-large-junction-box-ip56-weatherproof)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-23*