--- product_id: 408494269 title: "4 String PV Combiner Box with 15A Rated Current Fuse, Metal Box" brand: "powgrow" price: "€ 275.60" currency: EUR in_stock: true category: "Pow Grow" url: https://www.desertcart.it/products/408494269-4-string-pv-combiner-box-with-15a-rated-current-fuse store_origin: IT region: Italy --- # 50A air circuit breaker Durable metal lockable box Built-in surge protection 4 String PV Combiner Box with 15A Rated Current Fuse, Metal Box **Brand:** powgrow **Price:** € 275.60 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your solar game with unmatched safety and style! ## Quick Answers - **What is this?** 4 String PV Combiner Box with 15A Rated Current Fuse, Metal Box by powgrow - **How much does it cost?** € 275.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/408494269-4-string-pv-combiner-box-with-15a-rated-current-fuse) ## 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 - • **4x 15A Rated Fuses:** Individual overload protection for each PV string, maximizing reliability - • **Robust 50A Air Circuit Breaker:** Instant short-circuit fault protection for ultimate system safety - • **IP65 Waterproof Metal Enclosure:** Rugged, lockable design built to withstand harsh outdoor environments - • **Integrated Surge Protective Device:** Lightning arrester with clear status indicator to safeguard your investment - • **Pre-Wired with Premium Solar-Grade Cables:** Plug-and-play setup reduces installation time and optimizes system efficiency ## Overview The PowGrow 4 String PV Combiner Box is a professional-grade solar power accessory designed for on/off-grid photovoltaic systems. Featuring a rugged IP65 metal enclosure with lock, 4 individual 15A fuses, a 50A air circuit breaker, and built-in surge protection, it ensures reliable, safe, and efficient solar energy management. Pre-wired with high-quality solar cables and equipped with a ground wire connector, this combiner box optimizes system output while simplifying installation and maintenance. ## Description desertcart.com: PowGrow 4 String PV Combiner Box with 15A Rated Current Fuse, Metal Box | Surge Protective Device and 50A Air Circuit Breaker for On/Off Grid Solar Panel System, Pre-Wired Cable : Patio, Lawn & Garden ## 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 | #154,280 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,017 in Solar & Wind Power Parts & Accessories | | Customer Reviews | 4.6 4.6 out of 5 stars (232) | | Item Weight | 9.24 pounds | | Manufacturer | PowGrow | | Package Dimensions | 13.98 x 13.23 x 6.54 inches | ## Images ![4 String PV Combiner Box with 15A Rated Current Fuse, Metal Box - Image 1](https://m.media-amazon.com/images/I/61dRMDFDw9L.jpg) ![4 String PV Combiner Box with 15A Rated Current Fuse, Metal Box - Image 2](https://m.media-amazon.com/images/I/41HjIpQcLjL.jpg) ![4 String PV Combiner Box with 15A Rated Current Fuse, Metal Box - Image 3](https://m.media-amazon.com/images/I/41V2f8tspdL.jpg) ![4 String PV Combiner Box with 15A Rated Current Fuse, Metal Box - Image 4](https://m.media-amazon.com/images/I/51TqzfCyO3L.jpg) ![4 String PV Combiner Box with 15A Rated Current Fuse, Metal Box - Image 5](https://m.media-amazon.com/images/I/51yLVzzd73L.jpg) ## Available Options This product comes in different **Size** options. ## 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. ## 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 - BougeRV Solar Crimper Tool Kit - Crimper, 6 Pairs Connectors, Spanner Wrench for Solar Panel Cable Assembly and Installation - BougeRV 44PCS Solar Connector with Spanners IP67 Waterproof Solar Panel Cable Connectors Male/Female 22Pairs(10AWG) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/408494269-4-string-pv-combiner-box-with-15a-rated-current-fuse](https://www.desertcart.it/products/408494269-4-string-pv-combiner-box-with-15a-rated-current-fuse) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-10-04*