Wilo-Sub TWU 3

Series description

Special features/product advantages

  • Parts that come in contact with fluids are corrosion-free
  • Integrated non-return valve
  • Maintenance-friendly, rewindable motor

Design type

Multistage 3" submersible pump in jacketed construction for vertical or horizontal installation


  • For private water supply from boreholes, wells and rainwater storage tanks
  • For domestic water supply, sprinkling and irrigation
  • For pumping water without long-fibre and abrasive constituents


  • Multistage submersible-motor pump with radial impellers
  • Integrated non-return valve
  • NEMA coupling
  • Single-phase or three-phase AC motor
  • Integrated thermal motor protection for single-phase motor

Scope of delivery

  • Hydraulics + motor fully assembled
  • 1.8 m connecting cable approved for drinking water (cross-section: 4x1.5 mm2)
  • Single-phase version including switchbox with capacitor, thermal motor protection and On/Off switch
  • Installation and operating instructions

Type key


Wilo-Sub TWU 3-0115


Submersible pump


Diameter of the hydraulic unit in inches ["]


Nominal volume flow [m3/h]


Number of hydraulic stages

Technical data

  • Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
  • Immersed operating mode: S1
  • Fluid temperature: 3-35 °C
  • Minimum flow rate at motor: 0.08 m/s
  • Max. sand content: 50 g/m3
  • Max. number of starts: 30 /h
  • Max. immersion depth: 150 m
  • Protection class: IP 58
  • Pressure connection: Rp 1


  • Hydraulic housing: 1.4301 stainless steel
  • Impellers: polycarbonate
  • Hydraulics shaft: 1.4104 stainless steel
  • Motor housing: 1.4301 stainless steel
  • Motor shaft: 1.4305 stainless steel


Submersible-motor pump for vertical or horizontal installation.


Multistage submersible-motor pump with radial impellers with sectional construction. Integrated non-return valve. All parts in contact with the fluid are made of corrosion-free materials.


Corrosion-free single-phase or three-phase motor for direct starting, with rewindable motor, oil-filled, self-lubricating bearing.


The motor is cooled by the fluid. The motor must always be operated in submerged state. The limit values for the max. fluid temperature and the minimum flow rate must not be exceeded. Vertical installation is possible optionally with or without cooling jacket. Cooling jacket is required for horizontal installation.

Duty chart



REACH Regulation

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

PDF (581 kB)


Wilo-Sub TWU 3

Article Number 6080452
Edition 1608
Version number 01
Page format A4
Number of pages 11

PDF (514 kB)


Wilo-EMU D/DCH/K/KD/KM/NK/SCH / Wilo-Sub TWI/TWU / Wilo-Zetos K8

Article Number 6080455
Edition 1702
Version number 02
Page format A4
Number of pages 71

PDF (1 MB)



Article Number 6080454
Edition 1702
Version number 01
Page format A4
Number of pages 8

PDF (427 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-Sub TWU 3..., TWU 3-...-P&P

Article Number 2059966
Edition 2017-02
Version number 03
Page format 209.9 x 297.0 mm
Number of pages 360

PDF (3 MB)



PDF: Wilo-Sub TWU 3


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