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PDS33 4T250 Solar Pump Controller

Quick Overview

In order to satisfy the demands of various pumping applications in rural and remote areas and areas lack of power-supply, solar pump controller arises at the right moment. The controller adopts Max Power Point Tracking and proven motor drive technology to maximize power output from solar modules.


BrandMax Power
Product CodePDS33-4T250
Warranty2 Years
User GuideDownload PDF
SKU: PDS33-250K Categories: ,

Technical Specification

PV Source
Max Input Voltage(Voc) [V]800V DC
Recommended Voltage, at MPPT500V DC – 700V DC
PV Array Power [kW]300~400
Alternative AC Generator
Input Voltage380V AC(±15%), Three Phase
Max Amps(RMS) [A]468
Power and VA capability [kVA]355
Output Data
Output Power, rated [kW]250
Output Voltage, rated380V AC(±15%), Three Phase
Max Amps(RMS) [A]465
Output Frequency0-50Hz/60Hz
Surge protectionIntegrated
Overvoltage protectionIntegrated
Undervoltage protectionIntegrated
Locked pump protectionIntegrated
Open circuit protectionIntegrated
Short circuit protectionIntegrated
Overheated protectionIntegrated
Dry run protectionIntegrated
Communication portStandard isolater RS-485, Modbus protocol
General Data
Ambient Temperature Range-20℃~60℃, >45℃,Derating as required
Cooling MethodFan Cooling
Ambient Humidity≤ 95%RH 5
Dimensions(H*W*D) [mm]1464.5*579*405.2
Gross Weight [kg]175
Standard Warranty [month]18
CertificatesIEC/EN 61800-5-1,IEC/EN 61800-2:2004,IEC/EN 61800-3:2004,CE




  • Compatible with any IEC three-phase asynchronous motors
  • Compatible with popular solar arrays
  • Grid main supply optional


  • Self-adaptive maximum power point tracking technology with upto 99% efficiency
  • Automatic regulation of pump flow
  • Seif-adaption to the drive used in the installation

Cost Effectiveness

  • Plug-and-play system design
  • Embed pump functions
  • Battery-free for most applications
  •  Effortless maintenance


  • 10-year market proven experience of leading motor and pump drive technology
  • Soft start feature to prevent water hammer and increase system life
  • Smart igbt module integrated to simplify system design, reduce board space and simplify the manufacturing process
  • Built-in overvoltage, overload, overheat and dry-run motor protection

Remote Monitoring

  • Standard RS485 interface equipped for each solar pump controller
  • Optional GPRS RJ485 modules for remote access
  • Spots value of solar pump parameters monitoring available from anywhere
  • History of solar pump parameters and events lookup support, Android/iOS monitoring App support or PC


  1. According to the light conditions in different regions, the PV array power can be 1.2-1.6 times to the pump power.
  2. Use the deep well pump or the output power wire for a long occasion, the controller needs to enlarge one step.


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