The SUND 50 variable speed pool pump is a solar pump for circulating and filtering swimming pool water; it guarantees energy savings thanks to its photovoltaic power supply and variable speed operation. Installation is quick and simple thanks to the electronics integrated in the motor and smartphone control via the Nastec Now mobile app. The SUND 50 variable speed pool pump has been designed for silent operation and can be installed in damp and dusty environments thanks to its IP55 protection rating.
When the accessory (option) HMA is installed, it automatically manages switching from one energy source to the other according to numerous user-selectable logics: irradiation level, time of day, required daily flow reached, remote control via digital input.
Hydraulics:
- Quick-extraction inlet pre-filter.
- Carbon/ceramic mechanical seal.
- Pump body, impeller and diffuser in reinforced technopolymer.
- Glued discharge and suction fittings for PVC pipes of 50 mm external diameter.
- Operation guaranteed with sea water.
Integrated inverter:
- Motor interior entirely in aluminium with independent ventilation to ensure excellent thermal performance.
Motor:
- Three-phase asynchronous high-efficiency permanent magnet motor.
Integrated protection against:
- Overvoltage and undervoltage.
- Overload and no-load.
- Dry running.
- Overheating.
EMC compatibility for the domestic environment:
- Integrated PFC (P.F. 1) to comply with EN61000-3-2 legislation.
- Integrated filter for Category C1 (EN61800-3), Class B (EN55011)
| SUND 50 | |
|---|---|
| Supply frequency | 50 - 60 Hz (+/- 2%) |
| Maximum temperature of pumped liquid | 40°C |
| Working ambient temperature | -10 to 50°C |
| Maximum altitude at full load | 1000 m |
| Degree of protection | IP 66 |
| Maximum working pressure | 3 bar |
| Maximum suction head | 2.5 m |
| Digital outputs configurable N.O. or N.C. | 1. Motor running signal 2. Alarm signal |
| Analogue inputs (10 or 15 VDC) | 1. 4 – 20 mA 2. 4 – 20 mA 3. 0 – 10 VDC 4. 0 – 10 VDC |
| Digital inputs |
4 digital inputs, configurable as N.O. or N.C. for motor start and stop. |
| Communication |
RS485 MODBUS RTU, Bluetooth® SMART (4.0) |
| Model | Reference |
Voltage | Power P1 (w) |
Weight (Kg) | Ø External Suction and Discharge |
|---|---|---|---|---|---|
| SUND 50 |
610049 |
90 - 400 VDC 90 - 265 VAC |
800 | 10.7 | 50 mm |



Nastec Now App: an unmatched user experience.
- Monitor several operating parameters at the same time on a single large screen page.
- Carry out programming, save it in the archives, copy it to other devices and share it between several users.
- Obtain energy consumption statistics and view the alarm history.
- Remotely control a Nastec device via the Wi-Fi or GSM network, using a nearby smartphone as a modem.