Huawei Backup Box-B1 Three-phase Backup Box for SUN2000

Product description

The Huawei Backup Box-B1 three-phase Backup Box is the essential component to provide emergency power to a Huawei residential solar installation with SUN2000 inverters and LUNA2000 batteries. Its main function is to activate single-phase backup mode when a grid failure is detected, ensuring energy continuity in less than 3 seconds. With a capacity of up to 3.3 kVA, this fast-switching solution is perfect for three-phase homes that require electrical backup for critical loads.

Main features

• Automatic switching in less than 3 s upon detecting grid failure
• Single-phase backup output: 220–230 V, up to 3,300 VA
• Direct compatibility with SUN2000 inverters and LUNA2000 batteries
• IP65 protection rating for outdoor installations
• Compact design: 400 × 350 × 130 mm and weight of 11 kg
• Operates in a wide temperature range: –20 °C to +45 °C

Advantages or benefits

• Activates backup mode without manual intervention
• Provides power supply to essential loads during grid outages
• Prevents loss of communication, lighting, or sensitive devices
• Designed for seamless integration with the Huawei ecosystem
• Increases the safety and reliability of the photovoltaic installation

Purpose or applications

The Huawei Backup Box-B1 is intended for residential three-phase photovoltaic installations where backup power is required. It is ideal for homes with Huawei LUNA2000 batteries that wish to keep critical loads such as lighting, refrigerators, medical equipment, communications, or sump pumps operational during power outages.

Technical specifications

Compatibilities

This product is compatible with: Huawei SUN2000L 3 kW High Current, Huawei SUN2000L 4 kW High Current, Huawei SUN2000L 5 kW High Current, Huawei SUN2000L 6 kW High Current, Huawei SUN2000L 8 kW High Current, Huawei SUN2000L 10 kW High Current, Huawei LUNA2000 5 kWh, Huawei LUNA2000 10 kWh, Huawei LUNA2000 15 kWh.

Huawei Backup Box-B1 three-phase Backup Box is a professional solution for energy continuity in solar installations. It ensures protection, autonomy, and control against unexpected grid outages.