DOYIN 4SDM3/10 0.75HP Single-Phase AC Submersible Pump — 1.25" Outlet

The DOYIN 4SDM3/10 is a dependable 0.75HP single-phase AC submersible pump with an ordinary impeller, built for domestic wells and shallow-to-mid boreholes. With a 1.25-inch outlet and a flow rate of 4.8m³/h (4,800 litres per hour), it delivers reliable performance for a recommended depth of up to 64 metres, with a maximum head of 72M — a compact, affordable option for smaller household water needs.

Running on standard single-phase AC power, the 4SDM3/10 is a practical option for properties without three-phase supply — common across many residential sites in coastal Kenya. It fits domestic wells, household water points, and general home water supply needs in Mombasa, Malindi, Diani, Kilifi, and Lamu. This model is also available with a factory-fitted 30m cable option for easier installation on suitable wells.

As a single-phase AC pump, the 4SDM3/10 requires a matching AC controller (DOYIN's DYM-S03 unit) sized to its 0.75HP rating for correct, protected operation. It is not solar-compatible in this configuration and is best suited to properties with stable single-phase grid or generator power.

CoastalSolar Africa supplies, sizes, and installs the 4SDM3/10 pump, including the correctly matched DYM-S03 controller, across the coastal region.

Specifications:

• Model: 4SDM3/10
• Power: 0.75HP, single-phase AC
• Impeller: Ordinary
• Outlet size: 1.25 inches
• Max flow: 4.8m³/h (4,800L/h)
• Max head: 72M
• Recommended depth: 0–64M
• Power source: Single-phase AC (grid or generator)
• Required controller: DOYIN DYM-S03 AC controller
• Cable option: Also available as 4SDM3/10+30m Cable variant
• Application: Domestic wells, household water points, home water supply

FAQs:

Does this pump run on solar power?
No — the 4SDM3/10 is a single-phase AC pump requiring standard grid or generator power. For solar-powered options, ask about DOYIN's DC or hybrid AD pump range.

What controller does this pump need?
It requires the DOYIN DYM-S03 AC controller, specifically matched to this model — CoastalSolar Africa can supply and fit this correctly.

Is there a version with the cable already included?
Yes, DOYIN offers a 4SDM3/10+30m Cable variant with a factory-fitted cable for easier installation.

How does this compare to the 4SDM3/13 (1.0HP)?
Both use the same DYM-S03 controller, but the 4SDM3/13 reaches greater depth (77M vs 64M recommended) at a higher 1.0HP rating — the 4SDM3/10 is the more economical choice for shallower wells.

Do you install this pump in Kilifi and Malindi?
Yes, CoastalSolar Africa supplies and installs the 4SDM3/10 pump with its matched controller across Mombasa, Malindi, Diani, Kilifi, Lamu, and the wider coastal region.