Description

Product Description
The 3 in 3 out combiner box is designed for solar installations where three PV strings must be kept electrically independent, each feeding a separate input on an inverter or multiple inverters. This configuration is commonly used with inverters that feature three MPPT trackers, allowing each string to operate at its optimal performance level.

By maintaining independent inputs and outputs, the system reduces mismatch losses caused by shading, orientation differences, or panel variations. This improves overall system efficiency and energy yield, especially in more complex installations.

The combiner box integrates essential DC protection components for each string, including fuses or circuit breakers, isolators, and surge protection devices. These components protect the system from overcurrent, short circuits, and voltage spikes due to lightning or grid disturbances.

Housed in a durable weather resistant enclosure, the combiner box is suitable for both indoor and outdoor installations. It simplifies wiring, enhances safety, and ensures compliance with solar installation standards.

Technical Specifications

• Product Type: Solar PV combiner box
• Configuration: 3 inputs 3 outputs
• Application: Triple 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: 3 independent PV string inputs
• Output Channels: 3 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 systems with multi MPPT inverters
  • Commercial solar installations
  • Complex PV layouts with multiple orientations
• Key Features:
  • Independent string operation for optimal performance
  • Enhanced system efficiency
  • Integrated DC protection for each string
  • Durable weather resistant enclosure
  • Simplified installation and cable management