Nastec HMA Automatic Power Switch
Keep your water flowing whatever the weather. The HMA automatically switches your solar pump between solar power and mains or generator backup.
Why choose the HMA
Automatic switching
Moves between solar (DC) and mains or generator (AC) power on its own, based on the rules you set.
Five ways to switch
Manual, timed, by digital input, by flow or by how much sun there is.
Safe by design
Two interlocked contactors mean only one power source can ever be connected at a time.
Runs your generator
Can start and stop a backup generator as needed, and watch for generator faults or low fuel.
Works with the Nastec range
Compatible with MultiPower models of MIDA Solar and VASCO Solar, plus 4HS and SUND.
Connected
Bluetooth for the Nastec NOW app and Modbus connectivity.
HMA models
| Model | Max current | Suits |
|---|---|---|
| HMA 218 | 18 A | 4HS, SUND, MIDA Solar 203 to 207 MP |
| HMA 430 | 30 A | VASCO Solar 212 MP, 409 to 430 MP |
| HMA 485 | 85 A | VASCO Solar 438 to 485 MP |
| HMA 4118 | 118 A | VASCO Solar 4100 to 4118 MP |
| HMA 4268 | 268 A | VASCO Solar 4158 to 4268 MP |
IP54 enclosure, -10°C to 50°C operating range.
Brochures and manuals
Enquire about the HMA
Pricing depends on your site and the system you need. Send us a few details and we'll come back to you with a recommendation and a price.
Not sure of the numbers? Just give us what you know and we'll help with the rest.
Phone: 09 423 8061
Email: sales@watertechplus.co.nz
Monday to Friday, 8am to 4pm
