# Huawei Backup Box-B1 backup power switch box, 3-phase

> Backup power switching unit for selected Huawei SUN2000-M1 three-phase inverters, providing single-phase backup power in the event of a grid outage.

## Product identity
- **Brand:** Huawei
- **SKU:** Backup\_Box-B1
- **MPN:** Backup Box-B1
- **GTIN:** 2000001256534

## Description
The Huawei Backup Box-B1 is a backup power switching unit designed for selected Huawei SUN2000-M1 three-phase inverters. In the event of a grid power failure, it automatically disconnects from the public grid and provides single-phase backup power; the specified switching time is less than three seconds.

The backup power output parameters are 220/230 V, up to 3300 VA and 15.2 A, and the enclosure protection class is IP65. Compatibility is specified with SUN2000-3/4/5/6/8/10KTL-M1 inverter models; please check your selected system configuration and installation conditions in the manufacturer's datasheet.

## Specifications
- **Dimensions:** 400 x 350 x 130 mm
- **Ac Daznis:** 50/60 Hz
- **Warranty:** 2 metai
- **Paskirtis:** Automatinis atsarginio maitinimo perjungimas
- **Protection Class (IP):** IP65
- **Santykine Dregme:** 0–100 % RH
- **Perjungimo Laikas:** < 3 s
- **Max Regimoji Galia:** 3 300 VA
- **Tinklo Prijungimas:** Trifazis
- **Operating temperature:** −20 °C iki +45 °C
- **Max Isvesties Srove:** 15,2 A
- **Vardine Tinklo Itampa:** 380/400 V AC
- **Suderinami Inverteriai:** SUN2000-3/4/5/6/8/10KTL-M1
- **Tinklo Itampos Diapazonas:** 342–440 V AC
- **Atsargines Isvesties Fazes:** Vienfazė
- **Atsargines Isvesties Itampa:** 220/230 V AC

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