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Wilo-Sub TWU 3 | Wilo
Your advantages
Wilo-Sub TWU 3

Your advantages

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

Recommended services

Series description


Multistage 3" submersible pump in shroud design for vertical or horizontal installation


  • For domestic 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



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.

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


  • Motor versions for special voltages 3~230 V, 50 Hz; 1~230 V, 60 Hz; 3~380 V, 60 Hz


  • Cooling jacket pipes
  • Diaphragm pressure vessel
  • Cable kits for potable and process water
  • Float switch
  • Switchgears
  • Connection and installation material

General overview

General Overview 2023 - International version

Edition 2022
Page format 209.9 x 297.0 mm
Number of pages 74
PDF (24 MB)

Certification booklet


Article Number 6080454
Edition 1702
Page format A4
Number of pages 8
PDF (417 KB)

Wilo-EMU D/DCH/K/KM/SCH (w/o motor), Wilo-Sub TWI/TWU (w/o motor), Wilo-Actun ZETOS-K8 (w/o motor), Wilo-Actun ZETOS-K10 (w/o motor)

Article Number 6080455
Edition 2021-06
Page format 209.9 x 297.0 mm
Number of pages 72
PDF (7 MB)

Certificate REACH

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (262 KB)


Wilo-Sub TWU 3

Article Number 6080452
Edition 1608
Page format A4
Number of pages 11
PDF (502 KB)