--- product_id: 645663128 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: "฿37515" currency: THB in_stock: true reviews_count: 5 category: "Pow Grow" url: https://www.desertcart.co.th/products/645663128-pv-combiner-box-4-string-metal-solar-combiner-box-15a store_origin: TH region: Thailand --- # 50A Air Circuit Breaker for ultimate short-circuit protection IP65 Metal Lockable Box for rugged outdoor durability Built-in Surge Protective Device for lightning defense 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:** ฿37515 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your solar game with pro-grade protection and seamless control! ## 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?** ฿37515 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/645663128-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 - • **50A Air Circuit Breaker Control:** Instant short-circuit fault interruption keeps your solar power system safe and reliable. - • **Advanced Surge Protection Indicator:** Visual green/red status alerts you to lightning arrester health, preventing unexpected failures. - • **Integrated 15A Fuses for Each String:** Individual overload protection maximizes system safety and longevity, reducing costly downtime. - • **Robust Metal Housing with IP65 Rating:** Weatherproof and lockable design ensures your solar setup stays secure and operational in any environment. - • **Pre-Wired with Premium Solar-Grade Cables:** Simplifies installation and maintenance while optimizing electrical performance. ## Overview The PowGrow PV Combiner Box is a heavy-duty, metal-encased solar combiner designed for on/off-grid photovoltaic systems. Featuring IP65 waterproofing, 4 individual 15A fuses, a 50A air circuit breaker, and a surge protective device with status indicator, it ensures enhanced safety, reliability, and ease of maintenance. Pre-wired with high-quality solar cables and equipped with a lockable enclosure, it optimizes your solar array’s output while safeguarding your investment against overloads, short circuits, and lightning strikes. ## Description Our PV Combiner Box is a PV product designed to reduce the connection line between PV modules and inverter, facilitate maintenance and improve reliability. Using PV Combiner Box, users can connect a certain number of PV modules with the same specifications in series to form a series of PV modules according to the DC voltage range of the inverter input, then connect several series to the PV Combiner Box. Review: Solid construction Review: Well made and 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 | | Item Weight | 4 kg 200 g | | Manufacturer | PowGrow | | Package Dimensions | 35.5 x 33.6 x 16.6 cm; 4.2 kg | ## 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) ![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 2](https://m.media-amazon.com/images/I/71XHIpQE+4L.jpg) ![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 3](https://m.media-amazon.com/images/I/71JpeFRiLOL.jpg) ![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 4](https://m.media-amazon.com/images/I/71PWuilc-uL.jpg) ![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 5](https://m.media-amazon.com/images/I/71x5qVndkhL.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 13 November 2024* ### ⭐⭐⭐⭐⭐ Well made and it works! *by S***E on 25 May 2025* ### ⭐⭐⭐⭐⭐ Good product *by S***D on 15 March 2026* ## 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.co.th/products/645663128-pv-combiner-box-4-string-metal-solar-combiner-box-15a](https://www.desertcart.co.th/products/645663128-pv-combiner-box-4-string-metal-solar-combiner-box-15a) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-23*