4LSC-H Plastic Impeller Solar Pump

Model Interpretation:
4: Represents a pump body diameter of approximately 4 inches (about 100mm), which is more robust and has a larger flow channel than the 3LSC-H.
LSC: Represents "Vertical (L)", "Deep Well (S)", and "Plastic Impeller (C)".
H: Usually represents "High Head" or "Hybrid" (referring to its controller's support for multiple input types).

Core Form: Multi-stage centrifugal submersible pump.
Key Differences: Compared to the 3LSC-H, the 4LSC-H not only has a larger diameter, but its motor power is usually higher, and it is often designed for both AC and DC power, allowing it to be powered by solar energy or directly from the mains.
Core Working Principle: Multi-stage centrifugal pressurization + hybrid power supply
The 4LSC-H series operates on the principle of "high power, high pressure":
Large Flow Channel Design: The 4-inch pump body allows for more impeller stages and a larger diffuser casing, thus generating immense pressure at high rotational speeds.
Hybrid Power System: This is a major highlight of this series. It is usually equipped with a smart controller with MPPT function, supporting DC solar input and also compatible with AC mains input.
Advantages: Uses solar energy when available, and automatically or manually switches to mains power on cloudy days or at night, ensuring uninterrupted water supply.
Advantages of Plastic Impellers: Although the impellers are made of plastic, they use high-strength engineering plastic (such as PPO), which is lightweight, corrosion-resistant, and has low friction loss, making it ideal for long-term high-speed operation.
Core Features: High flow rate, high head, hybrid power supply

Feature Detailed Description
Ultra-high Pressure/High Flow Rate Core advantage. This series is designed for long-distance water transfer. Depending on the configuration, it can easily reach a head of 150 meters or more while maintaining a large flow rate (e.g., 10-20 tons per hour), which is difficult for the 3LSC-H to achieve.
AC/DC Hybrid Power Supply Supports both solar and mains power input. This makes it suitable not only for remote areas but also for homes or farms that require high water supply stability.
Corrosion-resistant, Maintenance-free The plastic impellers never rust, and the operation noise is extremely low. The motor typically uses high-temperature resistant copper wire, combined with oil or water cooling systems, resulting in a lifespan of tens of thousands of hours.
Widely applicable, it is suitable for both household water supply and sprinkler and drip irrigation systems in medium-sized farms.

Typical Application Scenarios
The 4LSC-H series is the main equipment for water supply in medium-sized farms and villages, and for long-distance water transfer:
Deep Well Water Extraction (50-150 meters):
Specifically designed for deep wells, it can pump deep groundwater to the surface.
Long-Distance Agricultural Irrigation:
Due to its high pressure, it is ideal for transporting water to farmland hundreds of meters or even kilometers away, or to orchards that require water to be pumped over small hills.
Household/Small Community Water Supply:
Used in centralized water supply systems for villa complexes and small villages, pumping water into elevated water towers.
Emergency Backup Pump:
Because it supports both mains power and solar power, it is often used as an emergency water supply device during power outages.

Selection and Usage Recommendations
Matching Well Diameter:
The 4LSC-H is a 4-inch pump and must be installed in a well with a diameter of 4 inches or larger. If your well is only 3 inches, this pump will not fit.
Strictly Prohibited for Pumping Sand:
Although it is a "heavy-duty" pump, the impeller is still made of plastic. It is not wear-resistant, and if the well water contains a large amount of sand, the impeller will wear out quickly, resulting in insufficient pressure.
Recommendation: Only use in clean water environments. For turbid or sandy water, please choose an industrial-grade pump with a full stainless steel impeller.
Cable Configuration:
Due to its high power (usually above 1kW-2.2kW), long-distance power transmission loss is significant. It is recommended to use a waterproof cable with a sufficiently large cross-sectional area (such as 2.5 square or 4 square millimeters) and ensure proper grounding protection.
Controller Maintenance:
Because it uses hybrid power, the controller structure is relatively complex. It is recommended to install it in a well-ventilated, cool, and rain-protected place.

The 4LSC-H series is the "all-rounder heavy hitter" among solar water pumps. It is more powerful and has a longer range than the 3LSC-H, and also features dual power backup functionality. If your requirement is to "pump water from a deep well and deliver it to a distant location," and the well water is clean, then the 4LSC-H series is a highly cost-effective option.