The Suntree SHLX-PV4/1 DC Combiner Box is a high-reliability photovoltaic (PV) distribution and protection unit designed for small to medium solar power systems using single MPPT inverters. It aggregates up to 4 PV string inputs into 1 output, ensuring safe current collection, protection, and streamlined wiring between solar panels and inverters.
Features & Benefits
- 4 PV String Input Capacity: Combines up to 4 solar strings into a single output, simplifying system wiring and reducing installation complexity.
- Single Output Design (1 Output Channel): Ensures clean, organized power flow to the inverter, improving system stability and efficiency.
- DC Fuse Protection (Per String): Protects each PV input line from overcurrent and short-circuit damage, increasing overall system safety.
- DC Surge Protection Device (SPD) Included: Shields the solar system from lightning strikes and voltage spikes, safeguarding inverters and PV modules.
- 63A DC Circuit Breaker / Isolation Switch: Enables safe maintenance and emergency shutdown, protecting technicians and equipment.
- High Voltage Compatibility (Up to 1000V DC): Suitable for modern high-voltage solar systems, ensuring compatibility with advanced inverter setups.
- IP65 Weatherproof Enclosure: Fully protected against dust, rain, and UV exposure, making it ideal for outdoor installations in harsh climates.
- Strong Environmental Resistance: Tested against high/low temperatures, impact, fire resistance, and UV radiation for long-term durability.
- Flexible PV Module Compatibility: Works with monocrystalline, polycrystalline, and thin-film solar modules.
- Simplified Installation Design: Pre-configured internal layout reduces wiring time, installation errors, and labor cost.
- High Reliability Electrical Protection System: Combines fuse, breaker, and SPD protection to ensure continuous safe operation of the solar system.
- Durable Engineering-Grade Enclosure: Built with robust materials designed for long service life in demanding environments.
- Compliance with International Standards: Designed according to CGC/GF 037:2014 photovoltaic junction equipment standards for quality assurance.
Use Cases
The Suntree SHLX-PV4/1 Combiner Box is ideal for:
- Residential solar systems
- Commercial rooftop solar installations
- Off-grid rural electrification projects
- Telecom tower solar backup systems
- Agricultural solar pumping systems
- Lodges, hotels and remote tourism facilities
- Industrial backup solar applications
Its robust weather-resistant construction makes it especially suitable for Tanzania’s hot, humid and dusty environments.
Value Proposition
- Enhances Solar System Safety: Provides professional-level protection for valuable solar inverters, panels and battery systems, reducing the risk of electrical faults.
- Improves Installation Efficiency: Combining multiple PV strings into one output simplifies cable management and reduces installation time and labour costs.
- Reduces Downtime: Integrated surge and overload protection helps maintain stable system performance and minimise unexpected failures.
- Cost-Effective Solar Protection: Offers an all-in-one DC protection solution that eliminates the need for separate external protection devices.
Local Market Positioning – Tanzania
As solar energy adoption continues to grow across Tanzania, demand for dependable DC protection equipment is increasing in both residential and commercial sectors. The Suntree SHLX-PV4/1 Combiner Box is positioned as a reliable mid-to-premium solar accessory for installers, EPC contractors and renewable energy providers seeking safe and durable solar distribution solutions.
Its 1000V capability, integrated protection features and outdoor-ready IP65 construction make it particularly attractive for Tanzania’s expanding off-grid and hybrid solar markets. Compared with lower-quality generic combiner boxes, Suntree products offer stronger reliability, improved safety and better long-term value for demanding solar installations.
Technical Specification
| Specification | Details |
|---|---|
| Model | SHLX-PV4/1 |
| PV Input Channels | 4 Inputs |
| Output Channels | 1 Output |
| Maximum System Voltage | 1000V DC |
| Maximum Input Current per String | 15A |
| Output Disconnect Switch | 63A DC |
| Fuse Type | DC PV Fuse |
| Surge Protection | Integrated DC SPD |
| Protection Rating | IP65 |
| Installation Type | Wall Mounted |
| Enclosure Material | PVC / Cold Rolled Steel Construction |
| Application | Solar PV Systems |
| Operating Environment | Indoor & Outdoor |
| MPPT Compatibility | Single MPPT Inverter |
| Safety Standards | CGC/GF 037:2014 Compliance |




