Huawei SmartGuard-63A-S0

Name: Huawei SmartGuard-63A-S0
Brand: Huawei
Author: JouleSpecs

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Data from official source

Sheet curated by JouleSpecs — We check every spec sheet against the manufacturer's own documentation: each value carries its source and the date we read it. Published Oct. 18, 2026 · Last updated Oct. 24, 2026

The Huawei SmartGuard-63A-S0 is a highly integrated box with communication, measurement and management functions, designed to be wall-mounted. It extends backup from partial loads to the whole house, with no extra switchboard needed to separate backup and non-backup loads. The changeover from grid to backup power is seamless, so connected appliances keep running. As the state of charge drops, it allocates power according to the priorities you set and sheds less important loads. It is a single-phase model and includes the SmartAssistant for scheduling and usage priorities.

01 · Verified data

Technical specifications

Phases Single-phase

Parameter	Value	Source
Dimensions	35.5 × 15 × 48.5 cm (14.0 × 5.9 × 19.1 in)	manufacturer website
Weight	14.0 kg (30.9 lb)	manufacturer website
Phases	Single-phase	Compiled by editorial team
Switchover time	20 ms	Compiled by editorial team
Ingress protection	IP55	Compiled by editorial team
Mounting	Wall mounted	Compiled by editorial team
Maximum temperature	50 °C	Compiled by editorial team
Noise level	29 dB	Compiled by editorial team

03 · Summary

Pros and cons

In favour

Extends backup to the whole house, with no extra switchboard for backup and non-backup loads. source
As the state of charge drops, it sheds less important loads and prioritizes the appliances you choose. source
A spare manual bypass lets you connect loads if the contactor fails. source

Worth knowing

When off grid, whole-house support may vary with inverter capacity. source
It is a single-phase model: in a house with a three-phase installation it serves only one phase.

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