The SUNWAY SWHL-4 PV Combiner Box is specifically designed for photovoltaic (PV) grid-connected and off-grid power generation systems. It serves as a central convergence point for multiple PV arrays, optimizing system structure and enhancing reliability while providing comprehensive protection for PV panels and inverters.
- Convergence of PV Arrays
- Efficiently combines inputs from up to 4 PV arrays, streamlining connections to the inverter.
- Three-Layer Protection System
- Lightning & Surge Protection: Equipped with a dedicated high-voltage lightning arrester to safeguard against transient voltage spikes.
- Short Circuit & Overcurrent Protection: Integrates DC fuses (15A per array) and a 63A circuit breaker to prevent damage from fault currents.
- Overvoltage Protection: Monitors and mitigates voltage surges to protect downstream equipment.
- System Optimization
- Reduces cable connections, simplifies maintenance, and ensures the PV system operates at peak efficiency.
| Parameter | Value |
| Model | SWHL-4 |
| Max. Number of Connected PV Arrays | 4 |
| Max. Input Current per Array | 15A |
| Total Input Current | 63A |
| Max. Input Voltage per Array | 500V |
| Max. Output Voltage | 500V |
| Protection Grade | IP65 (dust-tight and water-resistant) |
| Operating Temperature | -30°C to +70°C |
| Relative Humidity | 0–95% (non-condensing) |
| Cooling Method | Natural cooling |
| Lightning Protection | Yes (surge protection module) |
| Dimensions | 8.66×6.69×4.33 inches |
- Connectors:
- Input: Solar MC4 connectors for PV arrays.
- Output: Sealed connectors for connection to the inverter.
- Protection Devices:
- Independent fuses (15A) for each PV array.
- 63A circuit breaker for main output.
- 1000V-rated lightning protection module.
- Enclosure:
- Waterproof lock buckle and IP65-rated housing for outdoor installation.
- Ground wire inlet for safe earthing.
- Mounting holes for easy installation on walls or frames.
- Suitable for: Outdoor PV systems in residential, commercial, and industrial setups.
- Wiring Optimization: Reduces cable clutter and improves system cleanliness, as shown in the before-and-after installation comparison.
- Complies with international standards for PV system protection and environmental durability.
- Designed to minimize maintenance needs while ensuring long-term reliability in harsh weather conditions.
High Voltage Lightning Arrester The combiner box for solar systems is built witha professional high voltage lightning arrester toprovide lightning and rain protection. Bothpositive and negative with thunder proofprotection.
IP65 Protection Level The lP65 protection level ensures protectionfrom dust, moisture, water, rain, snow, oil, etc, Itkeeps all your electrical equipment dry andensures even more security on constructionsites.
Thoughtful Design The Py combiner features 6 x 15A fuses forgood current limiting characteristics andbreaking high ability 125A circuit breaker cancut off and connect the load circuit, providingshort-circuit fault protection.
simple & Straightforward Connection All wires are pre-wired in the solar breakercomblner box. very sturdy to comblne your solarpanels, making your solar panel systemconnection easier, It comes with complete mounting accessories to be installed anywhere.
Premium ABs Material The board wall distributor features ABS materlalwith high impact strength, good weatherresistance, and strong wear resistance, Inaddition, the plastic coating protects againstwater and dirt.
Extensive Application The solar breaker combiner box is ideal forphotovoltaic grid.connected and off-grid powergeneration systems, It is mainly used with solarpanels in office buildings, industrial factories.residential buildings, carports, etc.
Q1:Are you a factory or trade company? We are a factory who has more than 10 years experience in manufacturing; strong aftersale service team and technical support. Free design according to client requirements. Q2:Whats the MOQ? We have stock and semi-finished products with enough base materials for new sampleand order for all models, So small quantity order is accepted, it can meet your require.ment very well.
Q3:Why others price much cheaper? We try our best to ensure our quality to be the best one in the same level price products. We believe safety and effectiveness are the most important.
Q4:Can I have a sample for testing?
Yes, you are welcome to test samples before quantity order; Sample order will be sentout 2-3 days generally.
Q5:Can Iadd my logo on the products?
Yes,OEM and ODM are available for us. But you should send us the Trademark authori-zation letter.
Q6 :Do you have inspection procedures?
100% self-inspection before packing.
