Wilo-Rexa UNI

Series description

Special features/product advantages

  • Excellent reliability due to corrosion-free hydraulics for universal application and various fluids
  • Easy installation thanks to its light weight, integrated capacitor at the single-phase motor and flange with integrated fixation
  • Optimum efficiency and operational safety thanks to its vortex hydraulics and smooth surfaces
  • Quick maintenance facilitated by direct access to the sealing chamber and pump housing
  • Long maintenance interval thanks to its double seal and a high volume sealing chamber

Design type

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


Pumping of

  • Sewage containing faeces in accordance with EN 12050-1
  • Wastewater


  • Winding temperature monitoring with bimetallic strip

Scope of delivery

  • Submersible sewage pump with 10 m cable
  • Operating and maintenance manual

Type key


Wilo-Rexa UNI V05/M05-540/P


Submersible sewage pump with centrifugal hydraulics


Series with copolymer hydraulics


Vortex impeller


Nominal diameter of the pressure connection:

05 = DN 50

06 = DN 50/65


Mains connection version:

M = 1~

T = 3~


Value/10 = motor power P2 in kW


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


Code for rated voltage


Additional electrical equipment:

No supplement = With bare cable end

P = with plug

A = with float switch and plug

Technical data

  • Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
  • Submerged operating mode: S1
  • Non-immersed operating mode: S2-15 min; S3 10 %
  • Protection class: IP68
  • Insulation class: F
  • Fluid temperature: 3 - 40°C, max. 60°C for 3 min
  • Free passage: 44 mm
  • Cable length: 10 m


  • Motor housing: 1.4301
  • Hydraulics housing: PP-GF30 (copolymer)
  • Impeller: PP-GF30 (copolymer)
  • Static gaskets: NBR
  • Sealing on pump side: SiC/SiC
  • Sealing on motor side: NBR (V05), C/MgSiO4 (V06)
  • Shaft end: Stainless steel 1.4401


Submersible sewage pump as submersible monobloc unit for stationary and portable wet well installation.


The outlet on the pressure side is designed as horizontal flange connection. The maximum possible dry matter is 8 %. Vortex impellers are used as the impeller shape. A pump support foot is integrated into the hydraulics housing.


The motors available are surface-cooled motors in single-phase version (with built-in operating capacitor) and three-phase version for the direct starting. The waste heat is given off directly to the surrounding fluid via the motor housing. These motors can operated immersed in continuous duty (S1) and non-immersed in short-time duty (S2) or intermittent periodic duty (S3).

Furthermore the motors are equipped with thermal motor monitoring. This protects the motor windings against overheating. For units with single-phase AC motors this is built-in and switches automatically. I.e. if the motor is switched off due to overheating and then cools down it is automatically switched on again. Bimetallic strips are used for this as standard.

The connection cable has a length of 10 m as standard and is available in following versions:

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


There is a sealing chamber between the motor and hydraulics. This is filled with medicinal white oil. The seal on the fluid side is provided by a mechanical seal.

Duty chart

Wilo-Rexa UNI


REACH Regulation

Edition 2018-10
Page format 209.9 x 296.7 mm
Number of pages 4

PDF (581 kB)


General overview 2018 International version

Article Number 2200591
Edition 2018
Version number 1
Page format 209.9 x 297.0 mm
Number of pages 72

PDF (11 MB)


Wilo-Rexa UNI

Article Number 6082109
Edition 2019-02
Version number 03
Page format 209.9 x 297.0 mm
Number of pages 776

PDF (10 MB)



PDF: Wilo-Rexa UNI


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