---
product_id: 408494269
title: "PV Combiner Box, 4 String Metal Solar Combiner Box with 15A Rated Current Fuse, Surge Protective Device and 50A Air Circuit Breaker for On/Off Grid Solar Panel System, Pre-Wired Cable"
brand: "powgrow"
price: "€ 230.61"
currency: EUR
in_stock: true
reviews_count: 8
category: "Pow Grow"
url: https://www.desertcart.nl/products/408494269-pv-combiner-box-4-string-metal-solar-combiner-box-15a
store_origin: NL
region: Netherlands
---

# 50A Air Circuit Breaker Durable Metal Lockable Box IP65 Waterproof Rating PV Combiner Box, 4 String Metal Solar Combiner Box with 15A Rated Current Fuse, Surge Protective Device and 50A Air Circuit Breaker for On/Off Grid Solar Panel System, Pre-Wired Cable

**Brand:** powgrow
**Price:** € 230.61
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your solar game with rock-solid safety and sleek durability!

## Quick Answers

- **What is this?** PV Combiner Box, 4 String Metal Solar Combiner Box with 15A Rated Current Fuse, Surge Protective Device and 50A Air Circuit Breaker for On/Off Grid Solar Panel System, Pre-Wired Cable by powgrow
- **How much does it cost?** € 230.61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/408494269-pv-combiner-box-4-string-metal-solar-combiner-box-15a)

## Best For

- powgrow enthusiasts

## Why This Product

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

## Key Features

- • **Four 15A Rated Fuses:** Individual string overload protection for optimized panel performance
- • **Robust 50A Air Circuit Breaker:** Instant short-circuit protection for ultimate system safety
- • **Premium Metal Enclosure with Lock:** Weatherproof, tamper-resistant, and built to last outdoors
- • **Integrated Surge Protective Device:** Lightning arrester keeps your solar investment safe and sound
- • **Pre-Wired with High-Quality Solar Wires:** Plug-and-play setup reduces installation time and errors

## Overview

The PowGrow PV Combiner Box is a heavy-duty, IP65-rated metal enclosure designed for on/off-grid solar systems. Featuring a 50A air circuit breaker, four 15A fuses, and a built-in surge protective device, it ensures reliable overload, short-circuit, and lightning protection. Pre-wired with professional-grade solar cables and equipped with a lockable metal box, it offers easy installation, enhanced safety, and long-lasting outdoor durability.

## Description

desertcart.com: PowGrow PV Combiner Box, 4 String Metal Solar Combiner Box with 15A Rated Current Fuse, Surge Protective Device and 50A Air Circuit Breaker for On/Off Grid Solar Panel System, Pre-Wired Cable : Patio, Lawn & Garden

Review: Solid construction - The PowGrow PV Combiner Box is very well-made and durable. I always look for features such as ample inner spacing for components and connections. These are more expensive but also easier to maintain/or upgrade. They allow for better heat dissipation. Metal is just my personal choice, although some of the PEP types are quality units but just not as good as the steel especially when it comes to a truly solid surface mount. PowGrow has weather strip, tight closure with robust latch and hinges.
Review: Well built and waterproof unit - Well built combiner box but I still have to install and see if it works

## Features

- Professional PV combiner box is suitable for your Photovoltaic On/Off-Grid Solar Power Generation Systems. Which makes your solar panel system work reliably and safety. With multifunction: PV array input with first class combination, Quickly cut off circuit, anti-thunder protection, anti-reverse, overload, etc.
- Metal box with a lock. Waterproof class: IP65. Durable metal box makes it much more suitable for outside use and installation. It has a longer lasting time than the PVC plastic solar combiner box. The internal mount plate is also made of metal.
- High quality wires. All wires are pre-wired in the box. Our solar combiner box is used professional wires that are especially for solar system. Built-in with a ground wire connector, the ground wire installation is available. Please ensure the current and voltage of single PV array doesn’t exceed 10A/250VDC. Then you can connect solar panel to the combiner box.
- Built in with 4pcs individual 15A rated fuse(10x38mm). Max current of single PV input array is 10A. Their function is over load protection. The Combiner Box protects PV solar panel and inverter. Besides it will reduce the length of cable connect from panel to inverter, optimize system instruction makes the system more useful and maintenance. All in all. It will make the PV power system increase output power.
- 50A air circuit breaker. It can provide short circuit fault protection and controls the combiner box output. Here is a Surge Protective Device/Lighting Arrester provides lightning protection. The “Green” indicates Normal, once it changes into “Red”. Remember to replace the SPD with a new one.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09BT91PHN |
| Best Sellers Rank | #135,177 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #881 in Solar & Wind Power Parts & Accessories |
| Customer Reviews | 4.6 4.6 out of 5 stars (218) |
| Item Weight | 9.24 pounds |
| Manufacturer | PowGrow |
| Package Dimensions | 13.98 x 13.23 x 6.54 inches |

## Images

![PV Combiner Box, 4 String Metal Solar Combiner Box with 15A Rated Current Fuse, Surge Protective Device and 50A Air Circuit Breaker for On/Off Grid Solar Panel System, Pre-Wired Cable - Image 1](https://m.media-amazon.com/images/I/61dRMDFDw9L.jpg)

## Questions & Answers

**Q: Is this UL rated?**
A: No I always call the customer service.

**Q: What size wire goes from the combiner strip (at top) to the breakers? #10 = 30 total amps.or #8=55amps. which one?**
A: #10 30 AMP Max

**Q: Have three strings.  I need a 20 amp fuse for one of them, can I replace one of the 15 amp fuses with a 20 amp and keep the remaining fuses 15 amps?**
A: For your case, please ensure the three strings' total voltage are close or the same to each other.

**Q: My panels have 8.9Amp.Should that be protected by 10Amp fuse?**
A: This does not matter. 10Amp and 15 Amp are both can be used. We offered 15Amp.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid construction
*by J***D on November 13, 2024*

The PowGrow PV Combiner Box is very well-made and durable. I always look for features such as ample inner spacing for components and connections. These are more expensive but also easier to maintain/or upgrade. They allow for better heat dissipation. Metal is just my personal choice, although some of the PEP types are quality units but just not as good as the steel especially when it comes to a truly solid surface mount. PowGrow has weather strip, tight closure with robust latch and hinges.

### ⭐⭐⭐⭐⭐ Well built and waterproof unit
*by M***N on November 17, 2025*

Well built combiner box but I still have to install and see if it works

### ⭐⭐⭐⭐⭐ Nice
*by D***H on November 9, 2025*

Works like advertised

## Frequently Bought Together

- PowGrow PV Combiner Box, 4 String Metal Solar Combiner Box with 15A Rated Current Fuse, Surge Protective Device and 50A Air Circuit Breaker for On/Off Grid Solar Panel System, Pre-Wired Cable
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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-26*