/ Internal Controller
Off-Grid Solar Water Pumps
0.3 HP-3 HP
The Heavy Duty 0.3HP - 3HP Solar Water Submersible Pump is a powerful and efficient waterpumping solution designed for home and commercial use. With a 3HP motor, it ensures strong water flow, while the solar-powered operation makes it an eco-friendly and cost-effective choice. The 1-year warranty guarantees long-term reliability.
Advanced Off-Grid Solar Water Pump Controller Production Line
(Innovative Technology-leading Solar Pump
Manufacturer, 0.3HP–3HP Range)
+ Modern Manufacturing Facility
State-of-the-art production line designed for high-efficiency off-grid solar water pumps.
+ Precision Testing and Equipment
Equipped with advanced testing systems, high-precision assembly machines, and quality inspection tools to guarantee performance and reliability.
+ Controlled Production Environment
Dust-free, temperature- and humidity-controlled workshop ensures consistent quality and durability of every pump.
+ Strong Production Capacity
With sufficient production capability and efficient operations, we ensure stable output, fast delivery, and consistent quality across all 0.3HP–3HP solar pump models.
0.3HP–3HP Off-Grid Solar Water Pumps
a Reliable and Energy-Efficient Water Solution
SAMKING 0.3HP–3HP Off-Grid Solar Water Pumps offer a reliable, energy-efficient, and eco-friendly water solution for homes, farms, and remote areas. Powered entirely by solar energy, these pumps deliver consistent water flow from wells, boreholes, or ponds—without electricity or fuel costs. Perfect for irrigation, livestock, and domestic use, they provide dependable performance even in off-grid environments.
/ Technical Snapshot
0.3-3hp Economic
Well Pump
Internal Controller
Maximum Power
3 Hp
Maximum Lift
325 m
Maximum Flow
49.6 m³/h
Operating Voltage
60-450 VDC, 150-240 VAC
Motor Type
Water-filled BLDC / PMSM
Certification
ISO / CE / RoHS Certified
/ Product Overview
What is a SAMKING Off-Grid Solar
Submersible Pump (0.3HP–3HP)?
A SAMKING Off-Grid Solar Submersible Pump is an advanced water pumping system designed to operate entirely on solar power, without the need for grid electricity or fuel. Using energy from a solar panel array, it drives a high-efficiency water-filled BLDC motor submerged in a well, borehole, or pond. The motor powers an impeller or screw that lifts water to the surface, ensuring a reliable, eco-friendly, and cost-effective water supply for homes, farms, livestock, and irrigation in off-grid or remote areas.
Available in 0.3HP to 3HP models, SAMKING pumps deliver strong water flow and high lift performance, making them ideal for both small-scale domestic use and medium agricultural applications where dependable water access is essential.
These pumps are ideal for:
+ Domestic water supply in homes and communities.
+ Agricultural irrigation for crops, greenhouses, and farms.
+ Livestock drinking water systems in rural areas.
+ Deep wells and boreholes for continuous water extraction.
Each SAMKING pump is designed with efficiency, reliability,
and low maintenance at its core.
/ Trust, Performance, Simplicity /
Why Choose Off grid Internal
Solar Water Submersible Pumps Controller?
+ Detachment from the Grid:
Off-grid solar pumps are ideal for farms, remote cabins, and rural residences. They provide a sustainable water source without relying on external power sources.
+ Renewable Energy Source
By using clean, sustainable energy, solar pumps help combat climate change and reduce environmental impact.
+ Reduced Operating Expenses
By utilizing free solar energy, these pumps have minimal operating costs, making them a popular and cost-effective choice.
+ No Emissions
Unlike diesel or electric pumps, solar pumps operate quietly and produce no pollutants, making them an eco-friendly solution.
+ Sustainable Water Management
Solar pumps ensure reliable water access for irrigation, livestock watering, and other uses, promoting sustainable water management practices.
+ Dependable Water Supply
Solar pumps provide a steady and reliable water source, ensuring continuous access to water, particularly in remote areas with unreliable electrical service.
+ Environmental Impact and Sustainability
Off-grid solar pumps reduce carbon footprints by harnessing renewable energy.
+ Ideal for Remote Locations
Off-grid solar pumps are especially suitable for distant, isolated areas where connecting to the electrical grid is costly or challenging.
+ Versatility
These pumps can be used for various applications, including household water supply, livestock watering, and irrigation.
+ Simple Installation
These pumps are easy to install and can be quickly deployed in various locations, making them a flexible solution for rural water pumping needs.
Internal Controller Solar
Pumps 0.3HP to 3 HP
An internal controller is a compact electronic device integrated and sealed within the submersible
pump motor housing.
Monitor-SK5000
(Optional)
Characteristics of internal controller
solar pumps 0.3Hp-3Hp
+ Common with 2-wire pumps
This setup is typically found on smaller, 2-wire
submersible pumps where the starting and running functions are built into the sealed motor unit.
+ Simpler installation
Because there is no separate control box to install and
wire, pumps with internal controllers offer a simpler installation process with a single power wire.
+ Lower upfront cost
Pumps with internal controllers are often less expensive
to purchase initially because they do not require the additional control box hardware.
+ Complex maintenance
When the controller fails, a technician must pull the
entire pump out of the well to service or replace it. This is a more complex and costly procedure.
+ Vulnerability to heat
The electronics in an internal controller are submerged
with the motor. While the surrounding water provides some cooling, the components are exposed to more heat
than an external controller.
/ Pump Advantages
Advantages of Solar Submersible
Pumps Internal Controller
Feature
/ High-efficiency BLDC motor:
/ Encapsulated water-filled motor:
/ Wide voltage & head range:
/ Smart controller with protections:
/ Stainless steel body & corrosion-resistant parts:
/ Fully automatic, no operator needed:
Benefit to You
+ 15–20% better energy use, lower solar panel cost
+ No oil leaks, longer life, safer operation
+ Works with diverse well depths and solar setups
+ Dry-run, over-current, over-voltage, and temperature safeguards
+ Durable in harsh environments
+ Set and forget — minimal maintenance
/ Motor of SAMKING
Permanent Magnet
BLDC Motor
● High-efficiency synchronous design improves performance by up to 20%.
● Reduces energy consumption and minimises the number of solar panels needed.
● Long service life with stable power output and soft-start control.
Advanced Motor & Winding System
● Magnet material of 40SH aluminum iron boron for superior temperature resistance up to 150°C.
● Cold-rolled silicon steel sheets for stator and rotor, ensuring minimal loss and vibration.
● 180°C copper enameled wire with insulation grade F.
/ Premium Quality
Superior Material
Construction
● 304 Stainless Steel Shaft prevents breakage and corrosion.
● 304 Stainless Steel or Copper Components for outlet, connection, and cylinder.
● Silicon Carbide + Graphite Mechanical Seal ensures high reliability and extended service life.
● Japanese NSK Bearings for reduced friction and improved axial load capacity.
● Double Bearing Rotor Support provides greater stability under deep-lift conditions.
/ Relevant Models
Hot-Selling Solar Submersible
Pump Series
DC Brushless Solar Submersible Pump
● Operates directly from solar power.
● Ideal for areas without grid connectivity.
● High-efficiency BLDC motor for consistent performance.
● Applications: Domestic water, irrigation, livestock supply.
● Max Lift: [158m] | Max Flow: [21.1m³/h] | Power: [1.3HP/1500W]
● Relevant Models: 3SPW1-11P, 4SPW2-7P
High Voltage DC Solar Submersible Pump
Single-Phase AC/DC Hybrid Submersible Pump
● Automatically switches between solar and grid when sunlight is low.
● Supports both AC 90–240V and DC input.
● Ensures continuous water supply in all weather conditions.
● Applications: Farms, households, institutions.
● Max Lift: [185m] | Max Flow: [51.6m³/h] | Power: [3HP/2200W]
● Relevant Models: 5SP25-2, 6SP20-1
Three-Phase AC/DC Hybrid Submersible Pump
● Designed for high-demand users and deep boreholes.
● Automatic switching between solar and grid, prioritizing solar.
● High lift, large flow, and heavy-duty construction.
● Applications: Agricultural irrigation, community water systems, industrial.
● Max Lift: [400m] | Max Flow: [115m³/h] | Power: [30HP/22000W]
● Relevant Models: A/D-4SPW6-15P
Internal
Controller
/ Quick Guide
How Solar Water Pump
Internal Controller Works
+ Battery Storage (optional component)
Its main purpose is to store the electricity produced by solar panels for
use later at night or whenever needed.
+ Solar Panels
They are responsible for capturing sunlight and
converting it to DC Power
+ Solar panel charge controller (depends on battery storage)
The MPPT solar charge controller’s main duty is to regulate the
electricity coming from solar panels and use it to charge the
lithium batteries safely.
+ Solar Inverter (required only if the solar pump is AC)
This converts DC power to AC power.
+ Electric Motor
This motor uses solar electricity to operate and draw water
from surrounding water bodies.
+ Piping and wiring
To connect multiple components so they can work together
seamlessly and transport water to the end destination.
/ Key Benefies
Benefits of SAMKING Solar Pump Kits
Zero Infrastructure
Install anywhere — even off-grid. No wiring, transformers, or grid dependency.
Low Operating Costs
Powered entirely by solar energy — zero fuel and near-zero maintenance.
Multi-Source Water
Draws water from wells, ponds, lakes, or tanks. even at low depths (≥1 m).
24-Hour Supply
Pairing with storage tanks ensures round-the-clock water availability.
Effortless & Secure
Smart controller handles auto start/stop, speed regulation / protection.
/ Check List
Installation & Commissioning
● Provide safety cable (stainless steel) & recommended poly pipe.
● Confirm borehole/well diameter and safe drop length.
● Mount the external controller in a shaded weatherproof box (IP65 recommended).
● Connect solar panels per controller voltage/current recommendations.
● Do a dry run and verify the controller display values (voltage/amp/watts).
● Connect solar panels per controller voltage/current recommendations.
/ Application /
Domestic Water Supply
Perfect for homes, villages, schools, and institutions that need a consistent and clean water source.
Agricultural Irrigation
Ideal for drip, sprinkler, or flood irrigation systems. Maintain crop health while cutting fuel costs.
Watering Livestocks
Reliable source for cattle, poultry, and dairy farms — even in remote grazing areas.
Community & Borehole
Used by NGOs, governments, and private enterprises to power rural water access programs.
/ Reviews & Feedback
Hear from Our Customers
Domestic Water
(Kenya)
Our family now enjoys a steady supply of water powered entirely by solar energy. The pump has been running for over a year…
Field Irrigation
(Zambia)
The pump delivers powerful flow even
on cloudy days. Maintenance-free and reliable just perfect for our small farm…
Herd Watering
(India)
No more diesel costs. The system runs automatically every morning. We can now focus on farming instead of managing…
/ Q&As
Solar Water Submersible
Pumps Questions &
Answers
Do I need a float or well switch?
Can SAMKING pumps run on both solar and grid power?
What type of motor is used?
How long do these pumps last?
Can I install it myself?
/ Downloads & Resources
/ Services
We Offer Reliable Support
Pre-Sales Support
· 24/7 availability, 1-hour responding.
· Comprehensive solutions for your needs.
· Support for Distribution, OEM, and ODM.
Contract Fulfilment
· Standardised service & inspection.
· Rigorous product checks.
· Order and logistics tracking.
Post-Sales Service
· 2 year warranty with 24-hour support.
· Installation, and maintenance assistance.
· Online training available.
/ Keywords
SAMKING, solar water pump, Manufacturer, Water-filled BLDC motor, Agricultural irrigation, Livestock drinking water, Domestic water, solar submersible pump, deep well solar pump, AC/DC hybrid solar pump, sustainable irrigation system.
