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Sub TWU 3.03-05-HS-ECP-B | Wilo
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Sub TWU 3.03-05-HS-ECP-B

Technical data
Tender text

Fully submersible, multistage submersible pump with radial impellers in sectional construction for vertical or horizontal installation, with built-in non-return valve.

Corrosion-free permanent magnet motor for direct starting for connection to the supplied frequency converter. Oil-filled motor with self-lubricating bearings, designed for high speeds up to 8400 rpm.

Operation with the frequency converter means the rotation speed of the unit is adapted to the current water requirements automatically. As a result, the submersible pump always delivers a constant pressure. The motor and the frequency converter are cooled by the fluid. Therefore, the unit must always be operated immersed. In cases of vertical installation, a cooling jacket must be provided depending on the diameter of the bore. In cases of horizontal installation, a cooling jacket must always be provided . For cooling, the frequency converter must be installed directly in the pipe outside the fluid (overflow-proof). For pumping water out of boreholes with a maximum immersion depth of 150 m and a max. sand content of 50 g/m³.

Scope of delivery

  • Hydraulics + motor completely assembled
  • Frequency converter
  • Connection cable approved for drinking water
  • Installation and operating instructions
Operating data
Max. delivery head H 90 m
Pipe connection on the discharge side DNd Rp 1
Maximum operating pressure p 40.0 bar
Max. sand content 50 g/m³
Protection class motor IP58
Max. immersion depth 150 m
Min. fluid temperature Tmin 3 °C
Max. fluid temperature Tmax 35 °C
Net weight, approx. m 5 kg
Motor data
Mains connection 1~230 V, 50/60 Hz
Rated power P2 0.9 kW
Rated speed n 8400 1/min
Rated current IN 10.4 A
Activation type Direct online (DOL)
Max. switching frequency t 30 1/h
Motor diameter DM 76 mm
Min. flow rate at the motor m/s 0.08 m/s
Connection cable length 1.8 m
Cable cross-section 4G1,5 mm²
Pump housing Stainless steel
Motor housing Stainless steel
Shaft Stainless steel
Impeller PC
Ordering information
Net weight, approx. m 5 kg
Brand Wilo
Product description Sub TWU 3.03-05-HS-ECP-B
Article number 6079400

Installation and operating instructions

Wilo-Sub TWU 3-...-HS (High Speed)

Article Number 6063546
Edition 2019-05
Page format 209.9 x 297.0 mm
Number of pages 192
PDF (7 MB)

Certificate REACH (Documents)

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (212 KB)


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