Import 3-Phase Smart Double Water Pump Control Box 22kw — Buy in wholesale FOB from Supplier in China

Yueqing Haiyin Electric Co. Ltd. manufactures a 22kW three-phase smart dual-pump control box designed for water supply and drainage applications requiring automatic alternation, level monitoring, and motor protection. The unit integrates pressure control via electric contact pressure gauge or pressure switch, and water level control through probe or float switch inputs. Its multifunction display visualises supply voltage, motor current, tank status, and active alarm conditions. The control logic supports both upper tank water supply and lower tank drainage configurations, with an AUTO/MANUAL selector for operational flexibility.

The protection suite covers dry run, phase loss, overload, no-load, short circuit, over-voltage, under-voltage, pump stalled, anti-seizing, and pump shaft rust conditions. Anti-card protection initiates the pump automatically after 15 days of inactivity to prevent seizure. Overload and no-load current thresholds are user-configurable, with adjustable delay restart timing. The system automatically resumes normal operation when voltage recovers within nominal range following over-voltage or under-voltage events, and similarly restarts after power failure recovery. A programmable timer enables scheduled ON/OFF cycles, while push-button interface allows parameter adjustment without separate programming tools. Factory defaults restore by pressing both Overload and NO-Load buttons simultaneously for three seconds.

This control box targets municipal water works, building services contractors, agricultural irrigation operators, and industrial process cooling systems where continuous pumping with minimal human intervention is required. The 22kW rating suits medium-duty submersible or centrifugal pumps in commercial and light industrial settings. Importers should confirm with Yueqing Haiyin whether the enclosure carries an IP rating for outdoor or wet-well mounting, the exact input voltage tolerance band for over-voltage and under-voltage protection, and whether the unit is supplied with or without integrated contactors and thermal overload relays.

Yueqing Haiyin Electric Co. Ltd. is based at 2nd Floor, Unit 4, Liushi Town, Yueqing City, Wenzhou, Zhejiang Province 325604, China. Wenzhou is a recognised cluster for low-voltage electrical equipment manufacturing in China. The company holds harbor trust tier status with zero platform response rate and zero average response hours recorded. No factory size, production capacity, year of establishment, or revenue figures appear in the available data. The address format suggests a commercial or light industrial premises rather than a dedicated manufacturing campus.

The supplier specialises in pump control and motor protection equipment, with this listing representing a smart microprocessor-based control box rather than a simple contactor starter. The product incorporates programmable logic for fault tracking and automatic restart sequences that exceed basic electromechanical starter functionality. However, the profile omits information about ISO 9001 certification, CCC compulsory certification status for the product, or export experience to specific markets. Buyers should verify whether Yueqing Haiyin manufactures the PCB assemblies in-house or sources them from third parties, and whether the company holds type test reports from CQC or accredited laboratories for the 22kW rating class.