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Huawei Backup Box-B1 emergency power supply module for SUN2000-M1 series three-phase inverters. Provides reliable backup power with automatic detection and switching in less than 3 s.
Huawei Backup Box-B1 is an emergency power supply (backup) module designed for Huawei SUN2000-3/4/5/6/8/10KTL-M1 series three-phase inverters. In the event of a grid power failure, it provides reliable backup power to loads through automatic detection and switching in less than 3 seconds. A simple and reliable solution increasing the energy security of the PV installation.
| Model | Backup Box-B1 |
| Grid connection (on-grid) | three-phase |
| Rated voltage (on-grid) | 380 V / 400 V |
| AC frequency | 50 Hz / 60 Hz |
| AC output voltage range (on-grid) | 342 V ~ 440 V |
| Max. pass-through current | 40 A |
| Backup output | single-phase, 220 V / 230 V |
| Max. apparent power (backup) | 3300 VA |
| Max. output current (backup) | 15.2 A |
| Switching time | < 3 s |
| Compatible inverters | SUN2000-3/4/5/6/8/10KTL-M1 |
| Dimensions (W × H × D) | 400 mm × 350 mm × 130 mm |
| Weight | 11 kg |
| Protection class | IP65 |
| Operating temperature | -20°C to +45°C |
Huawei Backup power module Huawei Backup Box-B1 for 3-phase M1 series inverters — backup m — B2B wholesale prices for installers and contractors. Check availability and terms of cooperation: contact us.
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