Controllers

Your Professional Controllers Manufacturer!

Hangzhou Ruifeng Environmental Protection Technology Co., Ltd. is a diversified high-tech enterprise integrating research and development, manufacturing, sales and service. The company's main sewage pump, integrated prefabricated pump station, integrated sewage treatment equipment, catering oil and water separation equipment and integrated sewage upgrading equipment.

Why Choose Us

Quality Control

We operate under strict ISO 9001 quality management standards, ensuring every product goes through complete performance testing before delivery, guaranteeing stable and dependable quality.

Production Equipment

We are equipped with a full set of advanced processing and manufacturing equipment, this includes surface grinders, lathes, power milling machines, universal lift table milling machines, universal lift table milling machines and other processing equipment. These equipment enable us to strictly control each production link to ensure the delivery of qualified and high-performance products.

OEM & ODM Services

For OEM and ODM projects, once you share your specific needs, our experienced engineering team will promptly develop tailored solutions for you.

Patents & Certifications

We hold multiple certifications and patents, including environmental management, quality management, occupational health and safety systems, as well as design and utility model patents.

Product Specification

Control Box Amp Ratings	40, 41, 42, 43, 44, 45
Control Box Voltage	230 Volt (3-Phase)
Number Of Pumps Controlled	1
Control Box Operations	On, Off
Pump's Voltage (@ Control Box Use)	230
Control Box Internal Thermal Overload Protection	Yes
Control Box Voltage Overload Protection	Electronic
Circuit Breaker Protection	40.2~45.5 Amps, Running Amps 43.0, Heater Size K74
Power Spike Control	Yes
Watertight Outer Housing	Yes
Watertight Float Switch Cable Outlets	Yes

Product advantages

01/

Fully Enclosed, Dust-Proof Control Cabinet
The sealed control box design protects internal components from dust and moisture, ensuring stable long-term performance in harsh environments.

02/

Durable Stainless Steel Detection Electrodes
Stainless steel sensing elements extend service life and provide reliable level detection even in corrosive or dirty water applications.

03/

Manual and Automatic Operation Modes
Operators can switch freely between manual and automatic control, allowing flexible use for testing, maintenance, or continuous unattended operation.

04/

Adjustable Liquid Level Control
The system allows users to set the water level points according to site conditions, ensuring accurate and efficient pump operation.

05/

Comprehensive Protection Functions
Built-in protection includes overload, short-circuit, phase loss, leakage detection, motor over-temperature, and pump leakage alerts—Maximizing equipment safety and reducing downtime.

06/

Supports Single-Pump and Multi-Pump Control
The controller offers multiple operating modes, including lead/lag switching, duty/standby rotation, and various starting configurations for different pumping requirements.

Applications Of Submersible Pump Controllers

Residential Water Systems

Used for automatic control of household wells, sump pumps, and small drainage systems, ensuring safe and efficient water management for daily use.

Agricultural Irrigation & Water Supply

Ideal for wells, irrigation networks, and farm water distribution. The controller provides stable pump operation and protects equipment from overload or dry-run conditions.

Commercial Buildings & Facilities

Supports booster pumps, drainage pumps, and water supply systems in office buildings, hotels, and public facilities, providing reliable automated control and system protection.

Industrial Water & Wastewater Systems

Widely used in factories, process plants, and industrial pumping stations for managing cooling water, wastewater, sewage, and circulation systems with high safety and fault-monitoring requirements.

Customization Options

Application-Based Configuration
We design each cabinet according to the customer's specific application—Industrial automation, HVAC, water treatment, or building systems—to ensure optimal performance and reliability.

Customized Electrical Parameters
Power rating, voltage level, and control mode of the frequency converter are selected to match the site's technical requirements and operational load.

Environmental Adaptation Design
Cabinets can be tailored for different installation environments, including high temperature, high humidity, heavy dust, or outdoor exposure, ensuring long-term stability.

Special Protection Options
We offer explosion-proof, waterproof, and corrosion-resistant designs for demanding industrial conditions, ensuring compliance with safety standards.

Application of Water Pump Accessories

Agricultural & Construction Water Systems

Our accessories support irrigation systems, construction water supply, and general water projects, ensuring stable flow control and reliable operation in outdoor and on-site environments.

Water Treatment & Pool Systems

Widely used in water treatment plants, swimming pool systems, and wastewater processes, delivering consistent performance in clean-water and dirty-water applications.

Industrial Fluid Transfer

Ideal for automotive, ceramics, chemical, and food & beverage industries, enabling smooth transfer of paints, slurries, acids, ingredients, and process fluids.

Printing, Packaging & Paper Production

Compatible with ink, glue, solvent, adhesive, and pulp transfer, supporting continuous operation in printing, packaging, and paper-making lines.

Paint & Coating Manufacturing

Used for mixing, loading, unloading, and transferring acrylics, pigments, solvents, and additives through different production stages, ensuring safe and efficient handling.

Certificate

FAQ

Q: What is a submersible pump controller?

A: A submersible pump controller is a smart control device that manages pump speed, pressure, and flow to ensure efficient and stable pump operation.

Q: How does a submersible pump controller work?

A: It receives signals from level, pressure, or flow sensors and automatically adjusts the pump speed to maintain consistent operating conditions.

Q: What are the key benefits of using a pump controller?

A: It reduces energy consumption, stabilises pump performance, extends pump life, and helps prevent downtime.

Q: What protection functions does the controller offer?

A: Standard protections include overload, short-circuit, phase-loss, dry-run, over-temperature, leakage detection, and motor safety shutdown.

Q: Can the controller support both manual and automatic operation?

A: Yes, it supports manual control for onsite adjustments and automatic control for daily operation.

Q: What input voltages are available?

A: We offer 1-phase AC220V ±15% and 3-phase AC380V ±15% to match different installation environments.

Q: What is the efficiency of the controller system?

A: The controller operates at ≥97% efficiency, helping reduce long-term energy costs.

Q: What output frequency range is supported?

A: The controller supports 0–500Hz output frequency for wide application flexibility.

Q: What control modes are available?

A: It supports sensorless vector control, vector control with encoder feedback, and V/F control.

Q: Can the controller integrate with SCADA or remote systems?

A: Yes, the system supports serial communication and can connect to SCADA for 24/7 remote monitoring and diagnostics.

Q: Does the controller support multi-pump operation?

A: Yes, it offers single-pump and multi-pump control with automatic duty/standby switching.

Q: What is a frequency conversion water supply control cabinet?

A: It is an intelligent cabinet that uses a frequency converter (VFD) to regulate pump motor speed, ensuring constant pressure water supply in residential, commercial, and industrial systems.

Q: How does the frequency conversion control cabinet maintain constant pressure?

A: It reads signals from pressure and level sensors, compares them with preset values, and automatically adjusts pump speed through the VFD.

Q: What technical features are included in the VFD system?

A: Features include PID control, multi-speed operation, torque control, automatic voltage regulation, soft start/stop, and up to 16-segment PLC logic.

Q: What input/output options are available?

A: The cabinet includes 7 programmable digital inputs, 2 analog inputs, relay outputs, analog outputs (0/4–20mA or 0–10V), and high-speed pulse ports for flexible system integration.

We are one of the most experienced controllers suppliers in China, featured by quality products and good price. Please rest assured to wholesale high-grade controllers made in China here from our factory. Contact us for quotation.