ZKSJ 3-phase brushless DC Pump DC50B,The advantages of high precision and good wear resistance, sound very low.

  • Impeller: Closed Impeller
  • Max head: 8M(for T sub-series) or 13M(for S/A sub-series)
  • Weight: 480g
  • Rated voltage: 12Vdc
  • Max flow: 23L/MIN(for T sub-series) or 30L/MIN(for S/A sub-series)
  • Dimension: 100.5x95.5x69.6mm
Customer service:86-755-27811557
1Dimension and weight100.5mmx95.5mmx69.6mm;480g
2External diameter of outlet20mm
3External diameter of inlet20mm
4Driving mechanismBrush-less, magnetic isolated design
5Material of pump shellABS,PES/SPS/PPS/PA66+30%GF (Optional)
6Condition of useCan continuously work, submersible or land use (not self-priming)
7Suitable mediumWater, oil, or normal acid/ alkaline liquids
(Pre-test needed for special liquid)
8Max working temperature60℃(for T sub-series) or 100℃(for S/A sub-series)
9Power consumption2.5W~48W(for T sub-series) or 2.5W~86.4W(for S/A sub-series)
10Rated voltage12Vdc or 24Vdc
11Working voltage range5Vdc ~ 14Vdc or 5Vdc ~ 26Vdc
12Max load current2.0A (for T sub-series) or 4.5A(for S/A sub-series)
13Max horizontal flow rate23L/MIN(for T sub-series) or 30L/MIN(for S/A sub-series)
14Max static lift8M(for T sub-series) or 13M(for S/A sub-series)                                  
15Noise class<40dB
16Waterproof classIP68(suitable for submersible installation)
17Life span>30,000hrsIP68(suitable for submersible installation)
18Power supplySuitable solar panel, batteries, adapter or other power source
19Protection functionDry-run protection, lock protection(customized function)
20Power regulation functionSpeed adjustable by PWM signal, 0~5V analog signal or potentiometer (functions are optional for customization)
  • small size with high efficiency,maintenance-free

  • Use ceramics shaft and carbon fiber sleeve

  • Completely water proof (IP68)

  • Brush-less dc control without pollution, long life span

  • OEM and ODM service accept

  • Offer Pump related control system design


Electrical parameters (only for reference,parameters can be customized for specific requirements)
Model No.VoltageMax load currentMax static liftMax flow ratePower consumption

V(dc)A ML/Hw
  •  Information including continuous working time, working temperature and medium is required to be pre-confirmed with professionals; pump cannot work with high temperature or corrosive fluids.

  •  When pump is connected into circulation system, load current will be reduced to 70~85% of Max working current (opening outlet current).

  •  The head means the Max vertical lifting height of water,the flow is 0L/MIN@max head.

  • The max flow rate means flow rate with no lifting height(according to the curve bellow)


Difference between 2phase & 3phase brushless DC pump
(T sub-series)
 Hall sensor driving, circuit board should be placed inside pump body
(S/A sub-series)
  • NOTE that 3phase dc is completely different with 3phase AC; 3phase DC means 3 pairs of magnetic polarity & sensor-less, power supply  the same with common DC pump

  • Intelligent program-driving, sensor-less, circuit outside of pump body (main factor that pump can be high-temperature resistant)

  • Speed adjustable by PWM, 0~5V signal or potentiometer(optional)

  • Lock protection,reverse-connected protection, over-vol.&over-current protection,

  • Soft start, no current impact, can be contact directly with solar panel

Zhongke water pump

Potentiometer Speed adjusting connection:
Contact the red and black wire to both ends of potentiometer(variable resistor),then contact the yellow wire to the middle of potentiometer,Speed canbe changed by turning the potentiometer. Potentiometer speed adjusting is the same with VR speed adjusting(Remove the potentiometer and contact the speed adjusting wire like VR speed adjusting connection bellow).
PWM(50-800HZ/Amlitude 5V) or VR(0-5V) Speed adjusting connection:
Contact the yellow wire to the control system's speed control signal output interface(PWM or VR) and contact the black wire to the ground lead in the control system.hang the red wire on the air.

Dimensions of pump


Characteristics of three-phase water pump

1.DC Low voltage safe and reliable

2.Three phase brushless sine wave control technology

3.Eliminate high-frequency electromagnetic noise, smooth and silent

4.The pump body and the drive can be separated and resistant to high temperature

5.Magnetic isolation design, leakage proof, waterproof grade IP68.

6.Acid, alkali and salt corrosion resistance, oil resistance, organic solvents and other liquid media (consult in advance)

7.Constant power can be customized (for example, 12V 80W water pump, Constant Power 80W with voltage varying between 12v-24v)

8.Constant speed can be customized (keep the speed unchanged when the load changes)

9.Accurate dry run protection and Jam protection based on current detection (programmable protection mechanism)

10.Soft start eliminates the peak voltage and reduces the starting current

11.Suitable for Music fountain and other high-frequency start- stop application

12.MPPT function can be customized for solar power supply to avoid poor startup when the light is weak.

13.The pump and pump control system can be customized for various application environment requirements