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Huawei Backup Box B1 for Three Phase Systems
Huawei Backup Box B1 for Three Phase Systems
Huawei Backup Box B1 for Three Phase Systems
Huawei Backup Box and SmartGuard — Grid-tied to off-grid and back, automatically — matched to the inverter, not to the house.
A Huawei residential system switches between grid-tied and off-grid through a Backup Box. When the grid fails the inverter goes off-grid and supplies the backup loads; when it returns, the inverter switches back. Detection and switchover are automatic.
Please read before ordering
About the Huawei Backup Box and SmartGuard
The two Backup Boxes are matched to inverter lists rather than to the property. The B0 serves the single-phase L1 range and the B1 the three-phase M1 range, and the model numbers on those lists are the check to make before ordering.
The SmartGuard is a larger idea. Rather than backing up a set of circuits, it switches the entire house connection, so the whole property continues to be supplied during a power failure. It mounts on the house supply line and carries an integrated EMMA smart meter, which is what makes dynamic tariffs and other intelligent loads usable.
What does this fit?
This is the box that switches a Huawei system between grid-tied and off-grid.
Match the box to the inverter. The B0 is for the single-phase SUN2000-2/3/3.68/4/4.6/5/6KTL-L1; the B1 is for the three-phase SUN2000-3/4/5/6/8/10KTL-M1. The SmartGuard is a different product: it switches the whole house connection and carries an integrated EMMA smart meter.
The products it is ordered with:
What the job needs
The details that decide whether this suits the system:
- Backup Box B0: single phase, for SUN2000-2/3/3.68/4/4.6/5/6KTL-L1.
- Backup Box B1: three phase, for SUN2000-3/4/5/6/8/10KTL-M1.
- Check the inverter model against the compatibility list before ordering — these are not interchangeable.
- SmartGuard-63A-T0: three phase, mounted on the house supply line, switching the complete house connection, with an integrated EMMA smart meter and four AC mains connections.
- Detection and switchover are automatic on all three.
Where this earns its place
The box is chosen by the inverter it serves.
Things worth knowing about this listing
- Compatible with the following Huawei inverters: SUN2000-3/4/5/6/8/10KTL-M1.
Huawei Backup Box B1 technical data
Questions we get asked about this inverter
Which Backup Box do I need?
The B0 for a single-phase SUN2000 L1 inverter, or the B1 for a three-phase SUN2000 M1. Check the model against the list — they are not interchangeable.
What is different about the SmartGuard?
It switches the entire house connection rather than a set of backup circuits, and it carries an integrated EMMA smart meter.
Is the switchover automatic?
Yes. All three detect a grid failure and switch over automatically, then switch back when the grid recovers.
Where does the SmartGuard go?
On the house supply line.
Documents, advice and trade pricing
Every datasheet, certificate, installation manual and warranty document we hold for this product is in the Documents tab below. See the rest of our storage range, our hybrid inverters and our batteries, or email sales@clearraysolar.com if you would like us to check a pairing before you order.
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Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.
