Knowledge Base ›
Backup Switching Devices
Official manufacturer
GLOBAL
verified Sept. 20, 2026
PRODUCT PHOTO · Huawei
Identity
category
backup_switching_devices
device_function
grid/backup AC changeover box for a three-phase residential hybrid inverter, supplying a single-phase backup load group
generation
Previous generation (superseded in Huawei's current line-up by SmartGuard-63A-T0)
manufacturer
Huawei
marketing_name
Backup Box-B1
model
Backup Box-B1
phase_support
Three-phase grid connection; SINGLE-phase backup load connection
predecessor
—
product_family
HUAWEI Backup Box
product_status
active
region
GLOBAL
region_note
Datasheets fetched were the EU/NZ and Italian editions.
region_scope
EU / NZ / Italy datasheets fetched
series
Backup Box
Electrical
ac_frequency
—
ac_output_voltage_range_on_grid
342 V ~ 440 V
backup_load_connection
Single Phase
backup_max_apparent_power_va
3,300
backup_max_output_current_a
15.2
backup_rated_voltage
—
grid_connection
Three Phase
grid_rated_voltage
380 V / 400 V
inverter_input_rated_voltage
380 V / 400 V
low_voltage_ride_through
—
max_pass_through_current_a
—
official_manual_url
https://support.huawei.com/enterprise/en/doc/EDOC1100179565
phase_count
1
pole_count
3
rated_current_a
125.0
rated_voltage_v
400.0
self_consumption_w
—
switching_time_ms
50.0
switchover_time
—
Physical / mechanical
cooling
—
dimensions_w_h_d_mm
400 x 350 x 130 mm
mounting
—
noise_emission
—
weight_kg
11
Installation
bypass
—
generator_integration
—
installation_position
Between grid, three-phase SUN2000 M1 inverter and a single-phase backed-up load group
load_management
—
max_devices_managed
—
Environment
max_operating_altitude
—
operating_temperature_range
-20 °C to +45 °C
relative_humidity_range
0 %RH ~ 100 %RH
storage_temperature_range
—
Interfaces & connectors
communication
—
digital_input
—
digital_output
—
lan
—
notes
The fetched datasheet contains no communication/interface section.
rs485
—
wlan
—
Protection
anti_islanding
—
degree_of_protection
IP 65
overcurrent_protection
—
residual_current_protection
—
surge_protection
—
Certifications
grid_codes
—
notes
No certification list in the fetched datasheets.
standards
—
Warranty & service
extension_options
—
standard_warranty
—
Documents
quick_guide
{# Located but never retrieved: listed, but deliberately not linked, and it
backs no stored value. #}
BackupBox-(B0, B1) Quick Guide (EDOC1100179565) — located, not retrieved
rev UNKNOWN
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
image_enrichment_pass 2026-09-11 manufacturer_legal_entity_as_printed Huawei Technologies Co., Ltd.
