Engineered to handle extreme tropical ambient heat, moisture, and electrical fluctuations, our primary configuration models are standard-aligned for Metro Manila's C&I and residential developments.
With some of the highest retail electricity rates in Asia, Metro Manila and adjacent industrial hubs in Cavite, Laguna, and Batangas are accelerating solar PV integration. Driven by the Philippine Department of Energy's (DOE) revised Renewable Portfolio Standards and Net Metering frameworks, industrial estates are transitioning rooftops into solar assets. This rapid scaling demands electrical safety devices that can manage solar generation profiles without compromising the local grid.
A solar combiner box plays a critical role in this ecosystem. By grouping multiple PV string inputs into a single, cohesive DC output, it protects the inverter from short circuits, overcurrent, and transient lightning surges. For commercial operators in the Manila electric distribution territory (Meralco), robust string level combination is essential to ensure uptime and safeguard capital investments.
High relative humidity (averaging 80% year-round) and high ambient temperatures in Metro Manila accelerate the degradation of standard plastic enclosures. Choosing IP65/IP66 enclosures with high UV protection is essential to prevent micro-cracking and water ingress.
Being a coastal metropolis adjacent to Manila Bay, the capital region faces salt-spray exposure. This environment causes rapid oxidation of critical electrical connections, leading to thermal anomalies and arc faults inside typical junction boxes.
Our combiner boxes utilize high-quality materials including ABS and polycarbonate housings alongside flame-retardant enclosures. Every component is designed to withstand internal high-temperature build-ups. Engineered ventilation valves maintain internal pressure equilibrium while excluding external saline humidity, ensuring the system functions reliably in harsh coastal environments.
For utility scale solar power plants in Luzon and commercial rooftops across Makati, Bonifacio Global City (BGC), and Quezon City, our combiner boxes ensure continuous operation through major monsoon seasons and typhoons.
Selecting the correct electrical parameters ensures safety compliance under the Philippine Electrical Code (PEC) Part 1. Refer to the standard configurations optimized for local utility grids below.
| System Type | Typical DC Input Voltage | String Current Range | IP Protection Level Required | Recommended Protection Components |
|---|---|---|---|---|
| Residential Net-Metering (3kW to 20kW) | 500V - 1000V DC | 10A - 16A per string | IP65 / IP66 Outdoor Polycarbonate | DC Fuse, DC SPD Type II, DC Miniature Circuit Breaker (MCB) |
| Commercial & Industrial Rooftop (50kW to 1MW) | 1000V DC | 16A - 25A per string | IP66 Wall-Mount / Anti-UV ABS | High-breaking capacity DC Fuse, DC SPD Type II, Molded Case Circuit Breaker (MCCB) |
| Utility-Scale Solar Farms (> 5MW Luzon Grid) | 1500V DC | 20A - 32A per string | IP66 Double-Door Metal / GRP | 1500V DC Fuses, 1500V DC SPD Type I+II, Smart Monitoring System (Current & Temp) |
Each photovoltaic string is equipped with dedicated positive and negative DC fuses to isolate faulty arrays under back-feed current conditions, preventing module damage.
Due to high lightning density in the Philippines, our units feature custom-fit Type II/Class II SPDs (or Type I+II for utility scale) to safely shunt high-voltage transients to the ground.
Integrated DC circuit breakers or load isolation switches allow local maintenance teams to safely disconnect solar array zones without halting the entire solar inverter network.
Xiamen Jonas Energy Co., Ltd. is a professional provider of renewable energy solutions, headquartered in Xiamen, Fujian Province, China. Since its establishment, the company has been dedicated to the research, development, manufacturing, and global distribution of advanced photovoltaic and energy storage products.
With a strong commitment to innovation and sustainability, Jonas Energy offers a comprehensive portfolio of solar energy solutions, including solar panels, inverters, energy storage batteries, mounting systems, and complete solar power generation systems. Our products are designed to meet the diverse needs of residential, commercial, industrial, and utility-scale projects worldwide.
We work closely with internationally recognized manufacturers and technology partners to provide a wide range of reliable energy storage solutions, including wall-mounted batteries, all-in-one storage systems, rack-mounted batteries, and containerized energy storage systems (ESS). Through continuous innovation and strategic partnerships, we help customers achieve greater energy independence and efficiency.
As a high-tech enterprise, Jonas Energy operates modern production facilities equipped with advanced manufacturing and testing equipment. Our annual production capacity reaches several gigawatts, enabling us to efficiently serve customers across global markets including the Philippines and Southeast Asia.
Our experienced R&D team consists of highly qualified engineers and technical specialists who continuously focus on product innovation, performance optimization, and technological advancement in the renewable energy sector. By integrating cutting-edge technologies, we ensure that our solutions remain competitive, efficient, and future-ready.
All products undergo rigorous testing and strict quality control procedures to ensure long-term reliability. We comply with international standards including IEC, CE, TUV, ISO9001, and ISO14001.
Our manufacturing facilities utilize highly efficient and precise production and inspection equipment to maintain exceptional product consistency throughout the process.
Our team includes experts in photovoltaic technology, energy storage systems, engineering design, project management, and international business.
From project consultation and system design to product supply, installation guidance, and after-sales support, we tailor solutions to your needs.
Explore our streamlined production process, from precision plate making and UV coating protection to strict electrical testing and quality checks.
From residential protection boxes to multi-channel utility smart monitoring boxes, choose the model that fits your solar layout requirements.
Get in touch with Xiamen Jonas Energy's expert engineering team. We offer customized design configurations, complete compliance documentation, and rapid shipping options directly to the Port of Manila.
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