Description

Product Description
The 18kW three phase AC combiner box is designed for larger residential estates, commercial buildings, and light industrial solar or backup power systems where a high capacity three phase inverter requires safe and compliant AC distribution. It provides a central interface between the inverter output and the main distribution board, ensuring stable and protected power delivery across all phases.

The unit integrates essential protection components including three phase circuit breakers, earth leakage protection devices, and surge protection devices. These components safeguard the system against overloads, short circuits, phase imbalance, earth faults, and voltage surges caused by lightning or grid disturbances, ensuring long term reliability and safety.

Suitable for three phase hybrid and grid tied inverter systems up to 18kW, the combiner box simplifies installation by combining all required AC protection into a single enclosure. Its durable construction allows for indoor or outdoor installation depending on enclosure rating, making it suitable for demanding residential, commercial, and light industrial applications.

Technical Specifications

• Product Type: AC combiner box
• System Type: Three phase AC protection and distribution unit
• Rated Power: Up to 18 kW
• Rated Voltage: 380 to 415 V AC
• Frequency: 50 Hz
• Phase: Three phase
• Input: Inverter AC output
• Output: Main distribution board connection
• Protection Components:
  • Three phase AC circuit breaker MCB or MCCB
  • Three phase earth leakage breaker RCD or RCBO
  • Surge protection device SPD Type 2
• Overcurrent Protection: Yes via MCB or MCCB
• Earth Leakage Protection: Yes via RCD or RCBO
• Surge Protection: Yes for transient voltage protection
• Isolation: Three phase manual isolator switch or breaker
• Enclosure Material: ABS plastic or powder coated metal
• Protection Rating: Typically IP65 for outdoor or IP54 for indoor
• Mounting Type: Wall mounted
• Cable Entry: Top or bottom gland entries
• Operating Temperature Range: Approximately minus 10 degrees C to 55 degrees C
• Compliance: IEC standards for low voltage three phase electrical distribution
• Installation Type: Indoor or outdoor depending on enclosure rating
• Application:
  • Large residential estates
  • Commercial buildings
  • Light industrial installations
  • Three phase hybrid inverter systems up to 18 kW
• Key Features:
  • High capacity three phase AC protection
  • Integrated safety and isolation components
  • Compact and durable enclosure design
  • Simplified installation and maintenance
  • Suitable for demanding multi phase systems