Product Overview
VIOX Electric is a leading manufacturer of renewable energy electrical equipment, specializing in high-quality solar photovoltaic solutions for the global market. Our VOPV600-2/2 Solar Combiner Box represents an advanced solution for medium to large-scale solar installations, offering dual-string capability with comprehensive protection and reliability.
The VOPV600-2/2 is a professional-grade DC combiner box designed for solar PV systems operating at DC600V. This versatile 2-input, 2-output configuration provides essential protection and connection functions for medium to large-scale solar installations, enabling efficient power distribution from multiple solar strings to inverters while maintaining independent circuit protection.
Key Features & Benefits
- Dual-String Capability: 2 independent input strings with 2 separate outputs for enhanced system flexibility and scalability
- Comprehensive Protection: Integrated DC switch disconnector, dual surge protection devices, and individual fuse protection for each string
- High Current Rating: 45A-rated switch disconnector suitable for high-power solar installations
- Robust Construction: IP65-rated ABS enclosure (VOAT-13) provides excellent protection against dust and water ingress
- Larger Capacity: Accommodates more components with optimized internal layout for easy maintenance
- Easy Installation: Wall-mountable design with clear labeling and accessible terminal blocks
- Certified Quality: Complies with EN50539 Type 2 standards for photovoltaic applications
- Independent Circuit Protection: Each string has dedicated fuse protection for enhanced safety and troubleshooting
- Space-Efficient Design: Compact dimensions (296 x 230 x 120mm) despite dual-string capability
- Maintenance-Friendly: Quick-access design allows easy inspection and component replacement
Technical Specifications
General Data
| Parameter | Specification |
|---|---|
| Model | VOPV600-2/2 |
| Rated Voltage | DC600V |
| Configuration | 2 Inputs / 2 Outputs |
| Degree of Protection | IP65 |
| Operating Temperature | -25°C to +60°C |
| Standard Compliance | EN50539 Type 2 |
| String Capacity | 2 independent PV strings |
Enclosure Specifications
| Parameter | Value |
|---|---|
| Model | VOAT-13 |
| Material | ABS (Acrylonitrile Butadiene Styrene) |
| Protection Rating | IP65 |
| Dimensions (H x W x D) | 296mm x 230mm x 120mm |
| Mounting Type | Wall-mounted |
| Color | Light Gray |
| Fire Rating | Self-extinguishing, flame-retardant material |
| Cable Entry Points | Multiple M20/M25 knockouts |
PV Switch Disconnector
| Parameter | Specification |
|---|---|
| Model | VOD1-63/4A |
| Type | 4-Pole DC Load Break Switch |
| Rated Voltage | DC600V |
| Rated Current | 45A |
| Number of Poles | 4-pole (2P per string) |
| Breaking Capacity | According to EN50539 |
| Operation | Manual operation with clear ON/OFF indication |
| Mounting | DIN rail compatible |
| Handle Type | Red/Green rotary handle with padlock facility |
DC Surge Arrester (SPD)
| Parameter | Specification |
|---|---|
| Model | VO-PV600 |
| Type | Type 2 DC Surge Protection Device |
| Maximum Continuous Operating Voltage (Uc) | DC600V |
| Nominal Discharge Current (In) | 20kA (8/20μs) |
| Voltage Protection Level (Up) | ≤2.5kV |
| Configuration | 2 units (one per string) |
| Poles per Unit | 2-pole + PE |
| Response Time | <25ns |
| Status Indication | Visual indicator window |
| Standard | EN50539 Type 2 |
| Mounting | DIN rail compatible |
DC Fuse Holder & Fuse
| Parameter | Specification |
|---|---|
| Model | VOPV-32 |
| Fuse Type | gPV (Photovoltaic fuse) |
| Rated Voltage | DC600V |
| Rated Current | 15A |
| Breaking Capacity | 20kA @ DC600V |
| Fuse Size | 10 x 38mm |
| Number of Fuse Holders | 4 units (2 per string: positive and negative) |
| Fuse Links Included | 4 pieces (15A DC fuse) |
| Mounting | DIN rail compatible |
| Standard | IEC 60269-6 |
| Indicator | Fuse status indicator |
Electrical Configuration
The VOPV600-2/2 features a professional dual-string electrical design optimized for safety, flexibility, and performance:
Input Configuration:
- Two independent string inputs (String 1 and String 2)
- Each string has positive (+) and negative (-) terminals
- Integrated fuse protection on both poles for each string
- Quick-connect terminal blocks rated for 4-6mm² cable per string
Protection Sequence (Per String):
- Primary protection: DC fuses (15A gPV type) on both poles
- Secondary protection: Type 2 DC surge arrester (VO-PV600)
- Isolation: 4-pole DC switch disconnector (45A rated) for simultaneous disconnection
Output Configuration:
- Two independent outputs to inverter(s) with clear polarity marking
- Each output corresponds to one input string for dedicated circuit management
- Terminal blocks rated for 4-10mm² cable per output
- Common PE (Protective Earth) connection provided for entire system
Schematic Features:
- Clear circuit separation between String 1 and String 2
- Visual representation of protection devices in sequence
- Color-coded wiring diagram (Red: Positive, Black: Negative, Yellow/Green: PE)
- Easy-to-follow layout for installation and troubleshooting
Bill of Materials
| Item No. | Component | Model/Specification | Quantity |
|---|---|---|---|
| 1 | ABS Enclosure | VOAT-13, 296x230x120mm, IP65 | 1 |
| 2 | DC Switch Disconnector | VOD1-63/4A, 4P, 45A, DC600V | 1 |
| 3 | DC Surge Arrester | VO-PV600, Type 2, 20kA, DC600V | 2 |
| 4 | DC Fuse Holder | VOPV-32, 2P, 15A, 10x38mm | 4 |
| 5 | DC Fuse Link (gPV) | 15A, DC600V, 10x38mm | 4 |
| 6 | Input Terminal Block | 4-6mm², Red/Black | 4 |
| 7 | Output Terminal Block | 4-10mm², Red/Black | 4 |
| 8 | PE Terminal Block | 4-10mm², Yellow/Green | 1 |
| 9 | DIN Rail | 35mm standard | 2 |
| 10 | Cable Glands | M20/M25, IP65 rated | 8 |
| 11 | Mounting Brackets | Stainless steel | 2 |
| 12 | Warning Labels | Multilingual safety labels | 1 set |
| 13 | Busbar | Copper, tin-plated | As required |
| 14 | Installation Manual | English/Multi-language | 1 |
Applications
The VOPV600-2/2 Solar Combiner Box is ideal for various medium to large-scale photovoltaic applications:
Residential Solar Systems
- Dual-string rooftop installations (6-10kW systems)
- Large residential solar projects with multiple roof orientations
- Grid-tied residential PV systems requiring string-level monitoring
Commercial Installations
- Medium commercial rooftop arrays (15-30kW)
- Building-integrated photovoltaic (BIPV) systems with multiple zones
- Distributed solar generation projects across multiple buildings
- Industrial facility solar installations
Specific Use Cases
- Multiple string connection point to single or dual inverters
- Systems with east-west facing arrays requiring separate MPPT inputs
- Protection hub for DC circuits in multi-string solar systems
- Isolation and switching point for maintenance of individual strings
- Surge protection for valuable inverter equipment in high-lightning areas
- String-level monitoring and troubleshooting applications
System Architecture Benefits
- Enable independent operation of two solar strings
- Allow for future system expansion without major rewiring
- Provide flexibility for connecting to dual-input inverters
- Support phased installation projects
Quality & Compliance
Certifications & Standards:
- EN50539 Type 2 – Photovoltaic (PV) systems – DC connectors and combiner boxes
- IEC 60269-6 – Low-voltage fuses for photovoltaic applications
- IEC 61643-31 – Surge protective devices for photovoltaic installations
- IEC 60947-3 – Low-voltage switchgear – Switches, disconnectors, switch-disconnectors
- IP65 – Ingress Protection (dust-tight and water jet protected)
- RoHS Compliant – Restriction of Hazardous Substances
- REACH Compliant – EU chemicals regulation
Quality Assurance:
- 100% factory testing before shipment
- High-voltage withstand testing (DC1000V for 1 minute)
- High-temperature aging tests (72 hours at 60°C)
- Mechanical stress testing (vibration and impact)
- Insulation resistance verification (>100MΩ)
- Contact resistance measurement (<50μΩ)
- Surge protection device testing per IEC 61643-31
Manufacturing Excellence:
- ISO 9001:2015 certified manufacturing facility
- Strict quality control procedures at each production stage
- Premium component selection from certified suppliers
- Automated and manual assembly processes for optimal quality
- Comprehensive final inspection and functional testing
- Traceability system for all components and assemblies
Installation & Maintenance
Installation Guidelines:
- Mount in a well-ventilated location away from direct sunlight and rain exposure
- Ensure minimum clearance of 100mm on all sides for ventilation and maintenance access
- Use appropriate mounting hardware for wall material (concrete, metal, wood)
- Ensure proper cable entry sealing with appropriate glands to maintain IP65 protection
- Follow color-coded terminals: Red (+), Black (-), Yellow/Green (PE)
- Connect String 1 and String 2 inputs to their corresponding outputs
- Verify all connections are tight and secure before energization (torque: 1.2-1.5 Nm)
- Label all cables clearly for future maintenance and troubleshooting
- Perform insulation resistance test before commissioning
Safety Precautions:
- Always disconnect DC power from both strings before opening the enclosure
- Use appropriate personal protective equipment (PPE) including insulated gloves and safety glasses
- Be aware that capacitive charge may remain in cables even after disconnection
- Follow local electrical codes and regulations (NEC, IEC, etc.)
- Ensure proper grounding of the system PE terminal
- Never exceed the rated voltage and current specifications
- Do not operate the switch disconnector under load without proper training
- Keep the area around the combiner box clear of flammable materials
Maintenance Recommendations:
- Visual inspection every 6 months for signs of damage or overheating
- Check surge arrester indicator status (green = OK, red = replace)
- Verify all connections remain tight (annual retorque check)
- Clean enclosure exterior with damp cloth as needed
- Inspect cable glands for proper seal integrity
- Test switch disconnector operation annually
- Replace fuses only with identical specifications (15A gPV, DC600V, 10x38mm)
- Keep detailed maintenance log for warranty and safety records
- Professional inspection recommended annually for commercial installations
Troubleshooting:
- If one string is not producing: check fuses for that string first
- Overheating: verify cable sizing is adequate and connections are tight
- Frequent fuse failure: check for short circuits or excessive string current
- SPD indicator shows fault: replace SPD unit immediately
- Switch won’t operate: ensure no load current when switching
Why Choose VIOX Electric?
Global Expertise: With years of experience in international markets, we understand the diverse requirements of solar installations worldwide and provide solutions that meet multiple regional standards.
Quality First: Every product undergoes rigorous testing to ensure it meets or exceeds international standards. Our commitment to quality is reflected in our certifications and customer satisfaction.
Technical Support: Our experienced engineering team provides comprehensive pre-sales consultation, installation guidance, and after-sales technical assistance in multiple languages.
Competitive Pricing: As a manufacturer, we offer competitive pricing without compromising quality, ensuring the best value for your investment.
Fast Delivery: Efficient production planning and logistics partnerships ensure timely delivery to your project site anywhere in the world.
Customization Available: We can customize products to meet specific project requirements, including different current ratings, additional monitoring capabilities, or special enclosure colors.
Comprehensive Product Line: The VOPV600 series includes multiple configurations (1/1, 2/2, 4/4, etc.) to match your specific project needs.
Environmental Commitment: Our products are designed for long service life, reducing environmental impact and total cost of ownership.
Technical Comparison: VOPV600-2/2 vs VOPV600-1/1
| Feature | VOPV600-2/2 | VOPV600-1/1 |
|---|---|---|
| String Inputs | 2 | 1 |
| String Outputs | 2 | 1 |
| Enclosure Size | 296x230x120mm | 290x190x110mm |
| Switch Rating | 45A (4-pole) | 32A (2-pole) |
| SPD Units | 2 | 1 |
| Fuse Holders | 4 | 2 |
| Ideal System Size | 6-30kW | 3-5kW |
| Applications | Medium-Large Scale | Small-Medium Scale |
Get in Touch
Ready to enhance your solar installation with the VOPV600-2/2 Solar Combiner Box? Contact VIOX Electric today for:
- Detailed technical specifications and drawings
- Pricing and MOQ (Minimum Order Quantity) information
- Custom configuration options for your specific project
- Technical support and pre-sales consultation
- Sample orders for testing and evaluation
- Bulk order quotations with competitive pricing
- Delivery timeline and logistics support
- Installation training and documentation
