Borehole Pumps under 3.7kW are specialized water pumps (water pump motors) designed in a long cylindrical shape, capable of operating fully submerged in water, typically lowered deep into boreholes or storage tanks to draw water up. With a capacity of under 3.7kW (equivalent to about 5HP), these borehole pumps stand out for their compact size, high efficiency in exploiting groundwater, and durable operation.
Borehole Pumps under 3.7kW
Applications of Borehole Pumps under 3.7kW
Borehole Pumps under 3.7kW are widely used thanks to their ability to operate effectively in deep borehole environments, providing a stable water source for various purposes.
Residential & household living
Family domestic water supply: The most popular solution for extracting water from deep boreholes, serving bathing, cooking, and daily activities continuously.
Residential clusters and rural areas: Provides an ideal groundwater extraction solution for small residential clusters and remote areas without a centralized tap water system, ensuring social security.
Household livestock utilities: Ensures a continuous clean drinking water and sanitation source for livestock in small and medium-scale farms, helping maintain the health of cattle and poultry.
Production & small-scale projects
Small-scale agriculture & irrigation: Suitable for orchards, small farms, or drip irrigation systems. The equipment helps provide accurate, economical water and optimizes crop development.
Civil construction: Used to pump water for mixing materials, cooling concrete, or supplying temporary domestic water for workers at small and medium-scale construction sites.
Light industrial production: Provides a stable water source for processing workshops and small-scale factories in equipment cleaning or cooling processes that do not require excessively large flow rates.
Applications of borehole pumps under 3.7kW
Advantages of Borehole Pumps under 3.7kW
Compact design: With a compact size, the borehole pump is easily installed in narrow-diameter boreholes, saving space and installation costs.
Low investment cost: Compared to other pump types of the same capacity, borehole pumps have a cheaper price, fitting the budgets of many users, especially households and small farms.
Stable operation: Borehole pumps are designed to operate continuously for long periods without major technical issues, ensuring a reliable and continuous water supply.
Easy maintenance: The simple structure of borehole pumps makes maintenance and repair easier than ever. Users can perform simple maintenance tasks themselves without professional technician assistance.
Suitable for moderate boreholes: Borehole pumps are specially designed to draw water from moderately deep boreholes, meeting the water usage needs of households and small farms in rural areas.
Advantages of borehole pumps under 3.7kW
Borehole Pump Prices under 3.7kW at Thanh Thai Motor
Below is the latest price list 10/2026 at Thanh Thai Motor, helping you easily choose the product that suits your usage needs.
Why do small borehole pumps under 3.7kW when lowered into boreholes often experience the phenomenon where turning on the power makes the motor hum while the impeller does not rotate?
The most common cause is sand or impurities tightly adhering to the multistage impeller system, causing the impeller to jam, or a voltage drop in the power supply (especially in agricultural areas with excessively long power lines). Customers need to pull the pump up to clean the impeller chamber, install a sand filter screen, and check whether the input voltage reaches a sufficient 220V (1-phase) or 380V (3-phase) upon startup.
Why do 1-phase 220V borehole pumps under 3.7kW strictly require the accompanying control capacitor box?
Unlike land-based motors, the submersible motor of a 1-phase borehole pump does not have a capacitor designed inside the body to ensure absolute water tightness. The external separate capacitor box contains the run/start capacitor and overload protection relay to assist the starting winding in generating initial rotational force. If connected directly to 220V power bypassing this capacitor box, the motor will not be able to spin on its own and will burn out the winding immediately.
When lowering a borehole pump dozens of meters deep underground, how do you know when the well is dry to turn off the pump and prevent burnout?
Because borehole pumps are cooled directly by the groundwater surrounding the pump body, if the well runs dry (dry running), the motor will overheat and burn out the mechanical seal/winding in just a few minutes. To protect pumps under 3.7kW, the optimal solution is to install an electrical control cabinet with a flow-sensing relay (or a borehole submersible float switch) so the system automatically cuts off power as soon as the output water flow is lost.
