Suntree SHLX-PV8/1 DC 8 Way 1 Output DC Combiner Box (1000V 20A Fuse 160A Disconnect)

The SUNTREE SHLX-PV8/1 DC Combiner Box is a high-performance photovoltaic solution designed to combine the DC output of up to 8 solar panel strings into a single output. Built for durability and safety, it integrates advanced protection components including DC fuses, surge protection devices (SPD), and circuit breakers, making it ideal for both residential and commercial solar installations in demanding environments like Tanzania.

Its rugged IP65-rated enclosure, flexible configuration, and optional intelligent monitoring system ensure efficient, safe, and simplified solar power distribution.

Features & Benefits

• High-efficiency DC combiner design: Combines multiple solar PV strings into a single output, reducing wiring complexity and improving system organization.
• Advanced circuit protection: Equipped with DC fuses, surge protection device (SPD), and circuit breakers to safeguard solar systems from overloads, short circuits, and lightning surges.
• Durable weatherproof enclosure: IP65-rated box ensures protection against dust, rain, and harsh outdoor conditions, making it ideal for long-term use.
• Simplified installation & wiring: Pre-configured internal layout allows quick connections, saving installation time and reducing labor costs.
• High voltage compatibility: Supports up to 1000V DC systems, suitable for residential, commercial, and industrial solar applications.
• Reliable disconnection mechanism: Integrated DC isolator switch enables safe maintenance and emergency shutdown of the system.
• Wide temperature tolerance: Designed to operate efficiently in extreme environmental conditions, ensuring stable performance year-round.
• Space-saving compact structure: Optimized enclosure design reduces installation footprint while maintaining easy access for maintenance.
• Enhanced system safety compliance: Built according to international standards to ensure safe and reliable solar power distribution.
• Low maintenance operation: High-quality components minimize wear and reduce the need for frequent servicing, lowering long-term costs.

Use Cases

• Residential solar power systems: Combines multiple rooftop PV strings into a single output, simplifying home solar installations and improving safety.
• Commercial solar installations: Ideal for offices, malls, and warehouses to manage multiple panel arrays efficiently and reduce system complexity.
• Industrial solar projects: Supports large-scale solar setups in factories and plants, ensuring reliable power distribution and protection.
• Off-grid solar systems: Used in remote areas to combine solar inputs for battery charging and standalone energy systems.
• Hybrid solar systems: Integrates with inverters, batteries, and generators to manage mixed energy sources effectively.
• Solar-powered telecom towers: Ensures stable and protected solar input for uninterrupted communication infrastructure.
• Agricultural solar applications: Powers irrigation pumps and farm equipment by organizing multiple solar panel connections.
• Solar street lighting systems: Combines inputs for centralized control and protection in public lighting projects.
• Mini-grid and rural electrification: Supports community-level solar distribution systems for villages and remote regions.
• Backup power systems: Enhances solar backup setups by safely managing multiple PV inputs for consistent energy supply.

Value Propositions

• Reduced installation cost & time: Combines multiple PV string inputs into one output, significantly reducing cabling, labour requirements, and overall solar system installation time, making EPC deployment faster and more cost-efficient.
• Enhanced system safety: Integrated DC fuses, surge protection device (SPD), and DC isolation switch provide multi-layer protection against overcurrent, lightning surges, short circuits, and electrical faults.
• Improved system reliability: Protects critical downstream equipment such as inverters and battery systems, ensuring stable DC input performance and reducing risk of system downtime.
• Optimized system efficiency: Structured DC input aggregation reduces wiring losses and ensures cleaner current distribution from solar strings to the inverter, improving overall energy yield consistency.
• Lower maintenance effort: Organised internal layout and labelled connections simplify inspection, fault tracing, and servicing, reducing long-term operational effort and downtime.
• Scalable system design: Supports expansion of PV arrays with additional strings without requiring major redesign of the electrical architecture, ideal for modular solar projects.
• Durability in harsh environments: IP65-rated enclosure ensures protection against dust, water ingress, UV exposure, and high humidity, enabling reliable outdoor performance in tropical and semi-arid climates.
• Flexible configuration options: Compatible with monocrystalline, polycrystalline, and thin-film solar modules, with adaptable protection component ratings based on system design requirements.
• Cost-effective protection solution: Combines fuses, SPD, and disconnect functionality in a single enclosure, eliminating the need for multiple separate protection devices and reducing system BOM cost.
• Supports long-term investment: Enhances the lifespan of the entire solar installation by protecting against electrical stress, environmental exposure, and grid-side disturbances, ensuring long-term return on investment.

Local Market Positioning in Tanzania

• Strong demand in off-grid and mini-grid solar sector: Tanzania has a large rural population with limited grid access, making off-grid and hybrid solar systems the dominant deployment model where combiner boxes are essential for PV string management.
• High adoption in commercial and industrial solar projects: Growing use of rooftop solar in Dar es Salaam, Arusha, Dodoma, and industrial zones drives demand for reliable DC combiner boxes to ensure safe inverter feeding and system stability.
• Ideal fit for rural electrification and mini-grid programs: Government and donor-funded rural energy projects (schools, clinics, villages) rely on modular solar systems where 8-string combiner boxes simplify field deployment and maintenance.
• Designed for harsh Tanzanian environmental conditions: IP65-rated protection makes it suitable for high heat, dust-heavy inland regions, and humid coastal areas such as Zanzibar and Dar es Salaam.
• Supports PAYGO and decentralized solar business models: Widely used in distributed solar home systems and PAYGO installations where reliability, low maintenance, and fast deployment are critical.
• Preferred in EPC and installer-driven markets: Tanzanian EPC contractors value pre-integrated protection (fuse + SPD + isolator) to reduce installation time and labor costs in competitive project bidding environments.
• Cost-sensitive but reliability-focused market fit: Tanzania prioritizes affordable solar solutions, but long-term durability and reduced failure rates are key buying factors—favouring robust metal enclosure combiner boxes over low-cost plastic alternatives.
• Strong fit for agricultural solar applications: Increasing use of solar for irrigation, cold storage, and agro-processing requires stable DC power distribution systems like combiner boxes for reliable farm energy infrastructure.
• Supports donor-funded and government electrification programs: Standardized design aligns with procurement requirements for international development projects focused on rural electrification and energy access expansion.
• Competitive positioning vs low-cost imports: Positioned as a mid-to-premium reliability product—competing against basic imported combiner boxes by offering better protection, durability, and system safety integration.

Technical Specification