Knowledge Base › Backup Switching Devices
Huawei SmartGuard-63A-S0
Official manufacturer GLOBAL verified Sept. 20, 2026
Unresolved safety-relevant conflict
Two sources give different figures for a value on this product and nobody has resolved it. The specifications below are shown as recorded, but this product must not be treated as verified for engineering purposes until the conflict is closed.
Two sources give different figures for a value on this product and nobody has resolved it. The specifications below are shown as recorded, but this product must not be treated as verified for engineering purposes until the conflict is closed.
Identity
| category | backup_switching_devices |
| datasheet_variant_grouping | Huawei publishes one specification table jointly for SmartGuard-63A-S0 and SmartGuard-63A-AUS0. |
| device_function | grid/backup AC changeover, islanding and load-management unit |
| generation | — |
| manufacturer | Huawei |
| marketing_name | SmartGuard-63A-S0/AUS0 |
| model | SmartGuard-63A-S0 |
| phase_support | Single-phase (L/N + PE) |
| predecessor | — |
| product_family | HUAWEI SmartGuard (Smart Guard / Whole Home Backup) |
| product_status | active |
| region | GLOBAL |
| region_note | S0 is the general/global single-phase variant. Huawei publishes S0 and AUS0 under one joint specification table. |
| region_scope | Global (non-Australia) |
| series | SmartGuard-63A |
Electrical
| ac_frequency | — |
| ac_voltage_nominal | 220 / 230 / 240 V L/N + PE |
| backup_capacity_claim | Support 63A of the whole house when on grid and may vary according to inverter capacity when off grid |
| bypass_operation_mode | Manual |
| dg_mode | — |
| low_voltage_ride_through | Supported |
| max_current_from_to_grid_a | 63 |
| max_current_from_to_inverter_a | 60 |
| max_current_to_backup_load_a | 63 |
| max_current_to_non_backup_load_a | 63 |
| measurement_current_range | <= 63 A |
| measurement_energy_accuracy | +/- 1% |
| measurement_voltage_range | 1P (L-N): 85 - 299 V AC |
| official_manual_url |
https://support.huawei.com/enterprise/en/doc/EDOC1100325386
SmartGuard-63A-(S0, AUS0) User Manual - Huawei — search-index listing (query: Huawei SmartGuard-63A-S0 T0 user manual); document located, not fetched
|
| official_product_url |
https://solar.huawei.com/en/products/huawei-smartguard/specs/
SmartGuard-63A-S0/AUS0 Specs (product page) — inventory record source_url
|
| phase_count | 1 |
| pole_count | 3 |
| rated_current_a | 63.0 |
| rated_voltage_v | 400.0 |
| self_consumption_w | 10 |
| switching_time_ms | 50.0 |
| switchover_time | <= 20 ms (in Seamless Mode) |
Physical / mechanical
| cooling | Natural Convection |
| dimensions_w_h_d_mm | 355 mm x 485 mm x 150 mm |
| enclosure_colour | — |
| mounting | Wall-mounted |
| noise_emission | <= 29 dBA |
| weight_kg | <= 14 |
Installation
| bypass | Manual bypass switch; provides manual backup support if the contactor fails |
| circuit_modification | — |
| generator_integration | — |
| installation_position | Between grid connection point, inverter, backed-up and non-backed-up load groups |
| load_management | 'Automatically switch off the less demanding loads and feed power to the preferential appliances you've set'; built-in SmartAssistant for scheduling and appliance control via Shelly sockets |
| max_devices_managed | {'smart_energy_controllers': 'up to 1', 'smart_chargers': 'up to 2', 'heat_pump': 'up to 12 (specs page) / up to 13 (datasheet) - see data_conflicts', 'shelly_device': 'up to 20'} |
Environment
| max_operating_altitude | 4000 m (derated over 2000 m) |
| operating_temperature_range | -25 °C - 50 °C |
| relative_humidity_range | 5% - 95% RH (non condensing) |
| storage_temperature_range | — |
Interfaces & connectors
| app | FusionSolar app (SmartAssistant functions) |
| bluetooth | — |
| cellular | — |
| dg_do_port | — |
| digital_input | x 2, <= 20 m |
| digital_output | x 2, <= 20 m |
| lan | 10 / 100 Mbps, <= 100 m |
| power_output | 9.5 - 13.2 V @ 100 mA, <= 3 m |
| rs485 | 9600 / 19,200 / 115,200 bps, x 2, <= 50 m |
| wan | 10 / 100 Mbps, <= 100 m |
| wlan | AP Mode, 802.11b/g/n (2.412 GHz - 2.484 GHz) |
Protection
| anti_islanding | Implicit in grid/backup changeover function; no explicit standard cited in the fetched documents |
| degree_of_protection | IP55 |
| fire_class | — |
| overcurrent_protection | — |
| residual_current_protection | — |
| surge_protection | — |
Certifications
| grid_codes | — |
| notes | No certification list appeared on the fetched pages or in the fetched datasheet. |
| 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. #}
SmartGuard-63A-S0 Quick Guide (EDOC1100321606) — located, not retrieved
rev UNKNOWN
user-manual
SmartGuard-63A-(S0, AUS0) User Manual - Huawei
user_manual
{# Located but never retrieved: listed, but deliberately not linked, and it
backs no stored value. #}
SmartGuard-63A-S0 User Manual (EDOC1100325386) — located, not retrieved
rev UNKNOWN
Recorded conflicts
environment.operating_temperature_range Review required
25 °C - 50 °C — https://solar.huawei.com/en/products/huawei-smartguard/specs/
-25 °C - 50 °C — https://solar.huawei.com/admin/asset/v1/pro/view/e3397de6d77c49ce903bea8a2dda7d06.pdf
installation.max_devices_managed.heat_pump Review required
up to 12 — https://solar.huawei.com/en/products/huawei-smartguard/specs/
up to 13 — https://solar.huawei.com/admin/asset/v1/pro/view/e3397de6d77c49ce903bea8a2dda7d06.pdf
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. |