380V borehole pump — 4SD3 4-inch Three-Phase Submersibles
We supply 380V borehole pump sets for deeper lifts and larger flows. Three-phase motors deliver balanced loads and long service life.
EEZI PUMPS is the authorised South African agent for Olbin.
Select a 380V borehole pump below — 4″ submersible sets for farms, estates and commercial sites.
About the 380V borehole pump (4SD3)
The Olbin 4SD3 series is a 4-inch submersible borehole pump line for three-phase power.
It is the right choice for higher heads, longer pipelines and continuous duty on farms and commercial estates.
Stainless-steel wetted parts improve corrosion resistance, while hydraulic stages in Noryl reduce load.
Compared with single-phase, a three-phase borehole pump runs cooler and more efficiently under heavy demand.
Installation tip: Specify supply cable size for 380V three-phase over the full drop and run length,
fit a non-return valve above the pump, and keep the unit fully submerged.
Add over-/under-voltage and dry-run protection for each 380V borehole pump.
fit a non-return valve above the pump, and keep the unit fully submerged.
Add over-/under-voltage and dry-run protection for each 380V borehole pump.
Browse our 380V borehole pump models — each is factory-matched and tested.
380V Borehole Pump Performance Curves (4SD3 Range)
Use the curve sheet and the cross-reference table below to match flow (L/min) to head (m) before selecting a model.
4SD3/13
Three-phase • 380V • Deeper bores and longer pipelines
Price Inclusive VAT : R2875.00
Three-phase borehole pump for deeper bores and long runs.
4SD3/17
Three-phase • 380V • Deep lift applications
Price Inclusive VAT : R3105.00
4-inch submersible borehole pump for estates and irrigation blocks.
4SD3/21
Three-phase • 380V • High head / long run pipelines
Price Inclusive VAT : R3680.00
Three-phase borehole pump for high static levels and elevation.
4SD3/26
Three-phase • 380V • Very high head duties
Price Inclusive VAT : R4370.00
4-inch submersible borehole pump for high-lift irrigation schemes.
Every 380V borehole pump is matched and tested for South African conditions.
What’s included — 380V borehole pump sets
Packages are supplied as pump + motor (no single-phase control box required for three-phase).
- Factory-matched pump + three-phase motor
- Wiring diagram & recommended protection settings
- Performance curve and quick-start guide
Key benefits of submersible borehole pumps
- 4-inch submersible form factor (fits 4″+ boreholes)
- Noryl thermoplastic impellers (durable, efficient)
- Stainless-steel wetted components
- Efficient 380V three-phase motors
Applications — three-phase borehole pumps
- Main farm supply to storage reservoirs
- Pivots, dragline and drip irrigation blocks
- Estates, lodges and multi-dwelling schemes
Sizing a 380V borehole pump
Send static level, drawdown, total run, friction losses and target pressure. Then we’ll confirm duty point, model and performance curve.
In addition, we’ll advise on cable gauge, overload settings and protection.
Installation notes
- Use correctly sized submersible cable for 380V (over full drop/run length)
- Fit a check valve above the pump and keep it fully submerged
- Route to a storage tank; use a booster set for building pressure
FAQ: When do I need three-phase?
Choose a 380V borehole pump for higher heads, long pipelines, or when balanced motor loads are required.
FAQ: Do I need a surface control box?
Three-phase systems use protection and starters sized to the motor. We’ll specify settings with your quote.
FAQ: Do you deliver countrywide?
Yes — we ship submersible borehole pump sets across South Africa with technical support and spares.
See also: 220V single-phase borehole pumps
| Learn more: submersible pump overview