3 Phase Corrosion Resistant Controller with 4kV Surge Protection & Modbus

The 3S IP55 corrosion-resistant and salt spray-proof intelligent pump control panel is specifically designed for coastal areas, saline-alkali land, chemical plants, or corrosive environments. It adopts a stainless steel shell + anti-corrosion coating + three-proof PCB, which can resist salt spray, sea breeze, and chemical corrosion, ensuring the long-term stable operation of the water pump system.

Shell Material: High-strength stainless steel, providing a solid foundation for corrosion resistance.

Surface Protection: Anti-corrosion coating treatment to resist sea breeze, salt spray, and chemical corrosion.

Internal PCB Protection: Three-proof paint + self-developed waterproof and anti-corrosion coating, enhancing the salt spray resistance of electronic components.

Sealing Design: The 3 phase intelligent motor protector box adopts a fully sealed design, with a special-shaped waterproof lock for the lock hole to prevent moisture and corrosive substances from entering.

Core Components: Top-brand components with high corrosion resistance and high-temperature resistance (CHINT: MCB / AC Contactor; HONGFA: relay; ST: chip).

Weather Resistance: -20℃~+55℃, 95%RH (no condensation), particularly suitable for humid and corrosive coastal environments.

Protection Rating: IP55.

Wide Voltage Design: 3-phase AC 220-415V, 440-490V optional, stably adapting to voltage fluctuations in complex power grids.

Coastal Agricultural Irrigation Systems: The salt spray-proof design of 3 phase intelligent motor protector box ensures the long-term stable operation of water pumps.

Coastal Pump Stations / Seaside Water Towers: Stable and reliable in rainy, humid, and salt spray environments.

Chemical Plants, Pharmaceutical Factories, Food Factories: Suitable for long-term use in dusty and corrosive environments, reducing maintenance frequency.

Sewage Treatment / River Pump Stations: The 3 phase intelligent motor protector box adapts to humid, hot, and corrosive environments, ensuring urban water supply and drainage systems.

Exclusive for High-Corrosion / High-Salt Spray Environments.

All protection parameters can be flexibly set to meet the working conditions of different pump stations, truly realizing reliable protection of the pump system.

Dry Running Protection: 

When coastal pump stations are affected by tides or pipeline network fluctuations, if the water source at the pump inlet is insufficient or the pipeline network is cut off, the IP55 corrosion-resistant and salt spray-proof intelligent pump control panel automatically shuts down to avoid dry running and motor burnout.

Locked Rotor / Blockage Protection:

 River pump stations are often blocked by floating objects or sediment. The controller real-time detects motor locked rotor and shuts down for protection, preventing motor damage due to overload.

Signal Delay Start/Stop (Preventive Type): 

In coastal or river environments, water level/pressure signals often have instantaneous fluctuations. The controller can set a 0–120-second delay, and only execute start/stop after the signal is stable, actively avoiding frequent start/stop of the pump due to instantaneous fluctuations.

Frequent Start/Stop Protection (Passive Type): 

If the pump has abnormal frequent start/stop, the 3 phase intelligent motor protector box immediately detects and triggers protection, avoiding premature damage to the motor and relay.

Overcurrent / Undercurrent Protection: 

When current is abnormal due to corrosion or pipeline abnormalities, it automatically shuts down to protect the motor and pump body.

Overvoltage / Undervoltage Protection: 

Copes with lightning strikes, power grid fluctuations, or unstable voltage in long-distance power supply common in coastal areas, ensuring system safety.

Short Circuit Protection: 

Prevents equipment damage or safety accidents caused by electrical short circuits.

Signal Loss Protection: 

In high-salt spray and corrosive environments, probes/sensors are prone to poor contact or failure. The IP55 corrosion-resistant and salt spray-proof intelligent pump control panel can immediately alarm or shut down, avoiding blind operation of the pump without monitoring.

Fault Self-Reset / Automatic Alarm (Self-reset time adjustable):

Suitable for unmanned  pump stations, automatically resumes operation after the abnormality is eliminated, or prompts maintenance through remote alarm.

Historical Fault Record: 

Automatically saves operation and fault data, facilitating the analysis of pump station working conditions and environmental impacts.

Supports RS485, Ethernet, 4G/3G, WiFi and other communication methods, and can be connected to PLC, BMS, SCADA systems to achieve remote monitoring and control.

To ensure the IP55 corrosion-resistant and salt spray-proof intelligent pump control panel operates reliably for a long time in high-corrosion and high-salt spray environments such as coastal areas, chemical plants, and river pump stations, our products have passed multiple environmental and electrical safety tests:

Salt Spray Test:

Simulates the high-salt spray environment by the sea, verifies the corrosion resistance of the shell, stainless steel fasteners, and electrical components, ensuring no rust or failure during long-term use.

Temperature & Humidity Cycling Test:

Cyclic verification in -20℃to +70℃, 95%RH high-humidity environment, ensuring the 3 phase intelligent motor protector box still operates stably in extreme climates with humidity and alternating hot and cold.

IP55 Waterproof & Dustproof Test:

Comprehensive waterproof and dustproof, ensuring the controller operates safely in outdoor rain, surge, and dust environments, suitable for long-term exposed installation.

Dust & Sand Test:

Simulates dust and sand carried by strong winds, verifies the protection capability of the controller shell and sealing structure, ensuring internal circuits are not contaminated.

4kV Lightning Surge Test / 8/20μs, 5kASimulation Lightning Impact Test:

Simulates real lightning strikes and high-energy surge impacts, ensuring the equipment is still safe and reliable in lightning-prone scenarios such as coastal pump stations and open areas.

Electromagnetic Immunity Test (EFT Burst Test / ESD Test):

Verifies the stability of the controller when subjected to±4kV electrostatic shock and 2kV electromagnetic pulse interference, avoiding misoperation caused by environmental static electricity and power grid fluctuations.