Description

Product Description
The 4 in 4 out combiner box is designed for solar PV systems where four strings must operate independently and feed separate inputs on one or more inverters. This configuration is commonly used with advanced inverters that have multiple MPPT trackers, allowing each string to perform optimally under different conditions such as varying orientations or shading.

By keeping each string isolated, the system minimizes mismatch losses and improves overall energy production. This makes it suitable for more complex residential systems and commercial solar installations where efficiency and flexibility are important.

The combiner box includes essential protection components for each string such as DC fuses or circuit breakers, DC isolators, and surge protection devices. These components ensure protection against overcurrent, short circuits, and transient voltage surges caused by lightning or switching events.

Built with a robust weather resistant enclosure, the unit is suitable for both indoor and outdoor installation. It simplifies system wiring, enhances safety, and ensures compliance with solar installation standards.

Technical Specifications

• Product Type: Solar PV combiner box
• Configuration: 4 inputs 4 outputs
• Application: Four string systems with independent MPPT inputs
• Rated Voltage: Typically up to 600 V or 1000 V DC depending on model
• Rated Current: Typically 10 A to 32 A per string
• Input Channels: 4 independent PV string inputs
• Output Channels: 4 independent DC outputs to inverter
• Protection Components per String:
  • DC fuse or circuit breaker
  • DC isolator switch
  • Surge protection device SPD Type 2
• Overcurrent Protection: Yes per string
• Surge Protection: Yes lightning and transient protection
• Isolation: Individual DC disconnect switches per string
• Enclosure Material: ABS plastic or powder coated metal
• Protection Rating: IP65 suitable for outdoor installation
• Operating Temperature Range: Approximately minus 25 degrees C to 60 degrees C
• Cable Entry: Multiple cable glands for PV and output wiring
• Mounting Type: Wall mounted
• Compliance: IEC standards for solar PV systems
• Installation Type: Indoor or outdoor installation
• Application:
  • Residential solar systems with multiple MPPT inputs
  • Commercial PV systems
  • Complex solar installations with varied panel orientations
• Key Features:
  • Independent string control and protection
  • Improved system efficiency and flexibility
  • Integrated safety components
  • Durable weather resistant enclosure
  • Simplified installation and cable management