Wilo-Rexa MINI3 | Wilo

Wilo-Rexa MINI3

The reliable wastewater and sewage pump for household and groundwater drainage.

Your advantages
Wilo-Rexa MINI3

The reliable wastewater and sewage pump for household and groundwater drainage.

The Wilo-Rexa MINI3 is the ideal submersible pump for standard sewage in site drainage and domestic situations. Its 40mm free ball passage makes it suitable for pumping wastewater and sewage free of faeces. The pump can be used flexibly for both stationary and portable wet well installations. If the pump is installed in the DrainLift WS 50 pump chamber, sewage with faeces can be pumped: the system has an approval according to EN 12050-1. The optimised hydraulics provide high levels of reliability for universal application in the pumping of a diverse range of fluids. Its compact design means it can even be installed in narrow drainage pits. The oil-filled sealing chamber and a double seal allow for longer maintenance intervals. Direct access to the most important components makes carrying out maintenance work very convenient.

Your advantages

  • High efficiency and operational reliability thanks to the optimised hydraulics
  • Easy installation – even in narrow drainage pits – thanks to its lightweight, compact design with integrated condenser and threaded flange
  • Reliable use in a variety of drainage applications thanks to the corrosion-free impeller and sealed cable inlet
  • Longer maintenance intervals thanks to the high-volume sealing chamber and double seal
  • Quick maintenance facilitated by direct access to the sealing chamber and pump housing

Wilo-Rexa MINI3_Feature_1_EN
Wilo-Rexa MINI3_Feature_2_EN
Series description
Wilo-Rexa MINI3


Submersible sewage pump for intermittent operation for stationary and portable wet well installation.


Pumping of

  • Sewage not containing faeces
  • Wastewater

Note: Sewage containing faeces can be pumped when the pump is installed in the DrainLift WS 50 pump chamber. The system has been approved in accordance with EN 12050-1.


  • Connection cable with
    • Plug (version P)
    • Plug and float switch (version A)
    • Bare cable end (3~)
  • Self-switching thermal motor monitoring

Scope of delivery

Pump with connection cable and

    • Plug (version P)
    • Plug and float switch (version A)
    • Bare cable end (3~)

Installation and operating instructions

Type key


Wilo-Rexa MINI3-V04.11/M06-523/A-5M


Submersible sewage pump




Vortex impeller


Nominal diameter of pressure connection G 1½


Max. delivery head in m


Mains connection version:

M = 1~

T = 3~


Value/10 = motor power P2 in kW


Frequency (5 = 50 Hz, 6 = 60 Hz)


Rated voltage code


Additional electrical equipment:

  • Without = with bare cable end
  • P = with plug
  • A = with float switch and plug


Connection cable length

Technical data

  • Mains connection: 1~ 230 V, 50 Hz or 3~ 400 V, 50 Hz
  • Submerged operating mode: S1
  • Non-immersed operating mode: S3 15%
  • Protection class: IP68
  • Insulation class: F
  • Fluid temperature: 3 ... 40 °C
  • Free ball passage: 40 mm


  • Pump housing: grey cast iron
  • Impeller: composite
  • Cover plate on suction port: stainless steel
  • Motor housing: stainless steel
  • Shaft: Stainless steel
  • Seal on the motor side: NBR
  • Seal on the fluid side: SiC/SiC
  • Static seal: NBR


Submersible sewage pump as submersible monobloc unit for portable wet well installation in intermittent operation.


Pump with vortex impeller and a free ball passage of 40 mm. Pressure connection as a vertical threaded connection.


Surface-cooled motor in single-phase version (with built-in operating capacitor) and three-phase current version for the direct starting. The waste heat is given off directly to the surrounding fluid via the motor housing. These motors can be operated immersed in continuous duty (S1) and non-immersed in intermittent operation (S3).

The motor is equipped with automatic thermal motor monitoring. This means that the motor is switched off if it overheats and is automatically switched on again once it has cooled down.

The connection cable has a length of 5 m or 10 m and is available in the following versions:

  • With bare cable ends
  • With plug
  • With float switch and plug


The seal is created on the fluid side by a mechanical seal, and on the motor side by a rotary shaft seal. A sealing chamber with a white-oil filling is located between the gaskets.


Installation and operating instructions

Wilo-Rexa MINI3

Article Number 3099171
Edition 2021-01
Page format 209.9 x 297.0 mm
Number of pages 32
PDF (4 MB)

Installation and operating instructions (digital)

Rexa MINI3

HTML (56 MB)

General overview (Documents)

General overview 2021 International version

Edition 2020
Page format 209.9 x 297.0 mm
Number of pages 74
PDF (10 MB)

Certificate REACH (Documents)

REACH regulation

Edition 2020-08
Page format 209.9 x 297.0 mm
Number of pages 2
PDF (158 KB)