VOPV600-2/2 Solar Combiner Box

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