Industrial Sewage Pump Controller PCB Support Float, Electrode And 4-20 Level Sensor

3S-31-PA 3 Phase Intelligent Water Pump Control Panel
Industrial-Grade Core · Flexible Integration · 17 Safety Protections
A bare-board control core tailor-made for system integrators and professional maintenance teams, specifically optimized for submersible and sewage pumps.

3S-31-PA is a pure control panel module (bare-board design) that requires installation in a user-prepared protective cabinet. As a professional smart pump control starter, it delivers complete controller functionality specifically engineered for submersible pump and sewage pump applications in industrial settings, equipment maintenance replacement, and space-constrained scenarios.

Key Differences from Single-Phase Panels

17 Industrial-Grade Electrical Safety Protections
The 3 phase intelligent water pump control panel is equipped with 17 industrial-grade electrical safety protections, accurately guarding against common risks in industrial power grids and effectively reducing submersible and sewage pump failure rates.

Motor damage prevention: Overcurrent, undercurrent, locked rotor, dry running, motor water seepage, motor overheating, frequent start-stop, anti-rust

Power grid/electrical issue prevention: Overvoltage, undervoltage, phase loss, three-phase unbalance, phase sequence, short circuit

Control abnormality prevention: Signal loss, sensor error

Compact Bare-Board, Flexible Integration

This compact bare-board design of the smart pump control starter allows easy compatibility with various explosion-proof, waterproof control cabinets and customized enclosures, thanks to its compact size of only 186*66*121mm.

It integrates multiple signal input terminals, natively supporting 10 types of common on-site signal devices such as float switches, electrode probes, pressure switches, electro-contact pressure gauges, pressure/liquid level/temperature sensors, flow switches, and remote pressure gauges—no additional expansion modules needed.

Intelligent Operation & Maintenance · Cost Reduction
The smart pump control starter features a high-brightness LCD screen that displays real-time current, voltage, status, and fault names, enabling fast and intuitive diagnosis for submersible and sewage pump systems.

With a separated design of the panel and enclosure, only the panel needs replacement when the old controller's enclosure is intact, significantly reducing maintenance costs.

Adaptability to Harsh Environments

The 3 phase intelligent water pump control panel adopts a wide-temperature design (-20℃ to +55℃), adapting to harsh industrial environments common in deep well and sewage applications.

When matched with a cabinet with IP55 or higher protection rating, it can withstand challenges in underground wells, humid workshops, and other tough conditions.

Multiple Flexible Control Modes

The smart pump control starter supports liquid level control (float switch), timing, and manual modes, meeting diverse control needs of submersible pump and sewage pump systems in industrial sites.

Industrial Maintenance: Precisely replace core panels in existing submersible pump control cabinets while retaining the cabinet

System Integration: Seamlessly integrate into customized PLC cabinets as dedicated control units for drainage or sewage systems

Municipal Projects: Serve as reliable control cores in limited spaces of underground drainage and sewage pump stations

Install the 3 phase intelligent water pump control panel in a well-sealed protective cabinet (IP55 or higher recommended)

After wiring, securely fasten the panel using original factory-configured fixing devices to prevent vibration-induced loosening

Always verify correct phase sequence after wiring the 3-phase power supply to avoid equipment protection shutdowns

Q1: How to confirm panel compatibility with existing submersible pump control cabinets?
A1: This 3 phase intelligent water pump control panel is compatible with over 95% of submersible pump control cabinets; simply measure the original control panel dimensions.

Q2: Can functions be expanded if customer needs exceed default capabilities?
A2: This 3 phase intelligent water pump control panel supports certain function expansions. Contact technical personnel to evaluate additional control logic or signal interface requirements.

You are welcome to contact us or authorized distributors to obtain technical documents, compatible model lists and quotations, helping you implement flexible and efficient water pump control solutions.