Shanghai 3S Global Company Limited

Industrial Single Pump Controller: Iron Enclosure & 17 Protections

Industrial Single Pump Controller: Metal enclosure pump controller,water pump starterfactory,dry run protection pump control box

Product Category

Industrial Single Pump Controller: Iron Enclosure & 17 Protections

Industrial Single Pump Controller: Iron Enclosure & 17 Protections

Product Category : Intelligent Pump Controller - Industrial-grade Pump Box

Model Range: 3S-I31-040 / 3S-I31-075 / 3S-I31-110 / 3S-I31-150 / 3S-I31-185 / 3S-I31-220 / 3S-I31-300

Applicable Power Range: 4.0kW ~ 30kW

Rated Voltage& Frequency: Three-phase AC220-415V; 50Hz & 60Hz

Core Components: ST microcontroller, Hongfa relays, CHINT MCB/AC contactor

Control Mode: Manual / Automatic / Timed / Remote RS485

Remote Control: RS485 (Modbus RTU), integration with PLC, BMS, SCADA, DCS, and HMI systems

Working Environment: -20℃~+55℃; 20 to 95% RH

Protection Degree: IP55, PCB moisture-protected, 360° water-resistant tested

IEC Standards Tested: 60529, 61000, 60068, 60950, 60335

Applications: Commercial buildings, Municipal drainage, Sewage treatment, Power plant circulation water, Fire fighting & sprinkler systems

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Core Application & Features

This series is tailor-made for industrial and municipal pump control systems, compatible with various three-phase electric pump control needs. This3 phase steel pump starter is particularly suitable for main pumps in factories, water supply in warehouse centers, and long-term operation under high-load environments.

Metal Iron Enclosure, Stable Protection

The 3 phase steel pump starter adopts a cold-rolled steel plate sprayed iron enclosure structure, featuring excellent dust and moisture resistance that meets installation requirements for indoor and semi-outdoor scenarios. Its compact design allows flexible wall-mounting in narrow spaces.

Wide Power Range Coverage, Strong Compatibility

The iron intelligent single pump control panel supports three-phase pump control from 4.0kW to 30kW, widely used in industrial and agricultural water supply, factory water distribution stations, cooling water return stations, and other working conditions. It is compatible with 220–415V three-phase power supply, matching power grid standards of different countries.

Industrial-Grade Safety

Top-in/bottom-out wiring improves layout and cooling, reduces dust buildup, enhancing system safety

Flame-retardant PVC ducts ensure organized, durable wiring and prevent short circuits, enhancing electrical safety

Optimized thermal path, supports large cross-section cable loads

Technical Specification Table

Parameter Item	Specification Description
Input Voltage	Three-Phase AC 220–415V
Supported Frequency	50Hz / 60Hz
Power Range	4.0–30kW
Control Modes	Automatic / Manual / Timed / Remote (optional)
Signal Input	Float switch, electrode, pressure switch, electro-contact pressure gauge, level/pressure sensor, temperature sensor, flow switch, etc.
Protection Mechanisms	17 intelligent protections: overcurrent, undercurrent, overvoltage, undervoltage, locked rotor, blockage, dry run, signal loss, sensor error, short circuit, phase loss, three-phase imbalance, anti-rust, phase sequence, frequent start-stop, water leakage, over-temperature protection
Communication Interface	RS485 (optional), Modbus RTU protocol
Enclosure Material	Cold-rolled steel plate with spray coating (iron enclosure)
Operating Temperature	-20°C to +55°C
Installation Recommendation	Wall-mounted installation; recommended grounding resistance < 4Ω

Typical Application Scenarios

Application Type

On-Site Pain Points

3S Controller Solution

Main Pump System in Factory Workshops

Traditional controllers’ rated current relies on manual setting, which easily causes recording/input errors during testing—leading to protection failure, increased energy consumption, or even motor burnout.

The 3 phase steel pump starter is equipped with a self-learning function, which automatically identifies and records the pump’s operating current into parameters (U03/U04) to avoid human errors.

It supports manual adapt to special working conditions, ensuring accurate and reliable protection.

Urban and Rural Water Works

Equipment is mostly in outdoor/semi-open environments with high humidity and dust, leading to enclosure aging and reduced long-term operation stability.

The cold-rolled steel spray-coated iron enclosure provides a durable structure, a high level of protection, and superior impact and aging resistance.

The iron intelligent single pump control panel has passed dust and sand protection and 95% relative humidity testing, ensuring reliable operation in complex outdoor environments and guaranteeing the long-term stability of the water supply system.

Frequently Asked Questions (FAQ)

Q1: Is the controller suitable for old pipe network renovation projects?

A1: Yes. The iron intelligent single pump control panel has a compact size and comprehensive functions, supporting multiple signal access and remote upgrades—ideal for old equipment replacement and system optimization.

Q2: Does it support linkage operation of multiple controllers in the same system?

A2: Yes. After accessing the main system through the RS485 interface, multiple pump station controllers can be managed in a unified manner, facilitating centralized control of large-scale projects.