Hunan, China
Business Type:
Manufacturer/Factory, Trading Company, Other
Management System Certification:
ISO 9001, ISO 14001
OEM/ODM Service
Sample Available
MEI Awards

Controller, Pump Controller, Single Pump Control Panel manufacturer / supplier in China, offering AC380V Single Pumpe Controller (L931) with Open Phase Protection, Water Pump Control Panel L932, Three Phase Single Pump Controller (M931) Which Has Phase Unbalance Protection and so on.

Diamond Member Since 2012
Audited Supplier
Supplier Homepage Products Three phase single pump AC380V Single Pumpe Controller (L931) with Open Phase Protection

AC380V Single Pumpe Controller (L931) with Open Phase Protection

Min. Order: 10 Pieces
Port: Ningbo, China
Production Capacity: 10000 Sets Per Month
Payment Terms: L/C, T/T, Western Union, Paypal
Task: Program
Structure: Closed-Loop
Mathematical Model: Linear
Signal: Continuous
Function: Automatic Control
Certification: ISO: 9001, CE

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Basic Info.

Model NO.
Leading or neutral
Transport Package
small size
HS Code
NO.1 About Product

AC380V Single pumpe controller(L931) with Open phase protection

L931 is applied for automatic liquid level control / pressure control and effective protection for duplex pumps of with AC380V, 50hz, single phase output power 0.75KW-15KW (1HP-20HP),direct start, including stainless steel or cast iron submersible pump,centrifugal pump, sewage pump etc.

Parameter form
General details
Main technical data
Start typeDirect on line
Qty of controlled pumpSingle pump
Rated input voltageAC380V Three phase
50HZ/ 60HZ
Rated output power0. 37kw-4kw (1hp-5.5hp)
5.5kw-11kw (7.5hp-15hp)
15kw (20hp)
Protection function 

Over load protection
Pump stalled protection
Dry run protection with sensor free
Under voltage protection
Over voltage protection
Repeat start protection
Phase unbalance protection
Phase reversal protection
Open phase protection
Application &
Control characteristic
Control and protect general pump
Using water level sensor , float switch or pressure switch or level/pressure transmitter to control pump start and stop
Applied for water supply by liquid level control through float switch or liquid probe
Applied for water supply by pressure control through pressure switch and pressure tank
Applied for drainage by liquid level control through float switch or liquid probe
Other featuresPump last five faults record displaying
Pump accumulative running time displaying
Pump shaft anti-rust
Present one dry contact point(BA port)
LCD screen locked function under anto state
Present RS485 port
Present user remote monitor
Push button calibration
Main installation data
Working temperature
Working humidity
Degree of protection
Install position
Unit dimension (L x W x H)
-25ºC-- +55ºC
20%--90%RH, no drips concreted
Wall mounting

Typical Application Example
AC380V Single Pumpe Controller (L931) with Open Phase Protection
Typical usage scenarios include
    -Holidays houses
    -Water supply from wells
    -Irrigations of greenhouses, gardens, agriculture

    -Rain water reuse
    -Industrial plants
    -Waste water tank / Sewage sink

NO.2 About us

1)Company Information 
     Brief Introduction
Since 2001, Leading Science & Technology company has been providing pump control and protection solutions to pump users.
Today Leading Science & Technology offers a wide range of pump control panel & pump control accessories for the pump control and protection market.

Our products: Intelligent Pump Controller, Sewage Pump Controller, Booster Pump Controller, Deep Well Pump Control Box, Submersible Pump Controller, Pump Motor Starter,Programmable Logic Controller, IOT Pump Controller, Reverse Osmosis Controller.

For more information, please visit: 

    Our office & Team
AC380V Single Pumpe Controller (L931) with Open Phase Protection

Leading company has three major departments:
1. Sales Team
2. R&D Team
3. Production Team
Sales team collect the information and technical requirements from pump manufacturers, pump distributors, pump users etc and report to our R&D team. According to the information, R&D team will evaluate firstly and start to research,develop and test the pump controller. Finally once the pump controller is workable, our production team will produce.

With our team members' close cooperation, Leading company has been developing many unique control and protection technology for pump industry.

2)Our trading fair&Communication&Feedback
AC380V Single Pumpe Controller (L931) with Open Phase Protection
AC380V Single Pumpe Controller (L931) with Open Phase Protection

NO.3 Our production capacity

AC380V Single Pumpe Controller (L931) with Open Phase Protection
Welcome to our factory field trip.

N0.4 FAQ       
Can i have some samples ?
Yes ,we can send you samples for testing,contact us for details 
What's delivery time ?
For standard pump control panel ,it usually takes about 7 working days;
For non-standard,it usually takes 15-20days ,please contact us for details;

Can I do OEM or ODM ?
Yes,we have our own engineering team and we do accept OEM and ODM,but there is ordering quantity requirement;
How does your factory do the quality control ?
Our production process follow up the ISO standard and we control the product quality from the raw materials to the finished product,each of our control panel will be fully assembled and strictly tested before packing and shipping ;
What is the approximate life time for your control panel ?
The designed life time of control panel is 8 years ;
What is your after sales service policy ?
According to the ordering quantity,we will give some free spare parts or controller for maintenance or replacement and we will give technical training;
How can i trust you ?
We have being developing the pump control panel manufacturing and selling for 15 years ,now many pump supplier from China and overseas are using our controller to control and protect their pump and motor.

Where is your location and transportation guide?
From Guangzhou to Changsha takes 1hour by air, 2.5hour by high speed train
From Shanghai to Changsha takes 1.5hour by air, 5hour by high speed train
From Beijing to Changsha takes 2.5hour by air
From Hong Kong to Changsha takes 2hour by air

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