Description

Product Description
The 2 in 2 out combiner box is designed for solar installations where two PV strings need to be connected and protected separately rather than combined into a single output. Each input is paired with its own output, allowing independent control and protection of each string, which is particularly useful for dual MPPT inverter configurations.

This configuration enhances system flexibility and performance by allowing each string to operate independently, reducing mismatch losses and improving energy yield in installations with different orientations or shading conditions.

The combiner box includes essential protection components such as DC isolators, fuses, and surge protection devices for each string. These components protect the solar system from overcurrent, short circuits, and voltage surges caused by lightning or grid disturbances.

The enclosure is typically weather resistant and suitable for outdoor installation, making it ideal for residential and small commercial solar systems. It simplifies wiring and ensures a clean, organized installation while maintaining safety compliance.

Technical Specifications

• Product Type: Solar PV combiner box
• Configuration: 2 inputs 2 outputs
• Application: Dual string solar systems with separate 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: 2 independent PV string inputs
• Output Channels: 2 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 for each output
• 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 gland entries for PV and output cables
• Mounting Type: Wall mounted
• Compliance: IEC standards for solar PV systems
• Installation Type: Indoor or outdoor installation
• Application:
  • Residential solar systems with dual MPPT inverters
  • Small commercial PV systems
• Key Features:
  • Independent string control and protection
  • Improved system performance with dual MPPT
  • Integrated safety components
  • Durable weather resistant enclosure
  • Simplified wiring and installation