Series description


Submersible drainage pump

Type key

Example: Wilo-EMU KS 15 X
KSDrainage pump
15Code number for distinguishing between pumps
Possible versions:
ESingle-phase connection
ESsingle-phase connection + float switch
DThree-phase current
DSthree-phase current connection + float switch
DMSthree-phase current connection + motor protection + float switch
E0single-phase connection without plug (bare cable end)
D0three-phase current connection without plug (bare cable end)
Grey cast ironMotor housing in cast iron
CeramUnit with ceram coating
Zcentre pressure port
Hhigh-pressure impeller
Mmedium-pressure impeller
Nlow-pressure impeller


Pumping of

  • Wastewater

Special features/product advantages

  • Long service life
  • Heavy-duty design
  • Slurping operation possible
  • Suitable for continuous duty (S1)
  • Ready-to-plug

Technical data

  • Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
  • Protection class: IP 68
  • Max. submersion depth: 12.5 m
  • Fluid temperature: 3…40 °C
  • Cable length: 10 m/20 m
  • Free ball passage: 5…45 mm (depending on type)
  • Pressure port: G 1¼, G 2, G 2½, G 3, G 4 (depending on type)


  • Ready-to-plug
  • Thermal motor monitoring
  • Sheath current cooling (depending on type)
  • Connection cable detachable


Submersible drainage pump as submersible monobloc unit for portable dry and wet well installation.


The outlet on the pressure side is designed as a horizontal or vertical threaded connection. On models with a horizontal pressure connection, a 90° elbow is attached to make a vertical outlet possible. Open channel impellers with free ball passage of 5…45 mm are used as the impellers.


Surface-cooling or self-cooling motors in single or three-phase versions are used, depending on the type. The self-cooling motors are filled with oil; the surface-cooling motors have thermal motor monitoring and sheath current cooling. The Ex-rated units KS 5, KS 6 and KS 16 are equipped with a surface-cooled motor without sheath current cooling. All models can be used both immersed and non-immersed, in continuous duty. This also permits slurping operation.

A sealing chamber protects the motor from fluid ingress. The filling fluid used is potentially biodegradable and environmentally safe.

The cable is detachable, the cable length is 10 m or 20 m. The S version is equipped with float switches. All models are equipped with plugs. The DMS versions are equipped with a switchgear with integrated motor protection.


Sealing on the fluid side and on the motor side is achieved by a bidirectional mechanical seal.


  • Motor housing: aluminium or EN-GJL 250 (depending on type and version)
  • Pump housing: EN-GJL 250
  • Impeller: EN-GJL 250
  • Shaft: 1.4021
  • Sealing on motor side: mechanical seal in various material versions
  • Sealing on pump side: Mechanical seal SiC/SiC
  • Static gaskets: FPM

Scope of delivery

Pump ready for connection with 10 m connecting cable (starting from KS 24, 20 m) and single-phase or three-phase current plug, Storz or GEKA solid coupling, 90° bend if necessary for implementation of vertical pressure outlet, installation and operating instructions.

Duty chart

Duty chart





Open single-channel impeller

Vortex impeller

Open multi-channel impeller



Sealing chamber

Sealing by mechanical seal on motor side

Sealing by rotary shaft seal on motor side


Sealing by mechanical seal on fluid side

Seal for rotary shaft seal on fluid side


AC motor

Three-phase motor

Direct activation

Star-delta activation

FC operation

dry motor

Motor with oil cooling

Sheath current cooling

From KS 24


Wet well installation, stationary


Wet well installation, portable

Dry well installation, portable

Dry well installation, stationary



Explosion protection

KS 5, 6, 16 only

Hose connection

Float switch

Non-return valve


Capacitor box for 1~230 V

Connection cable detachable



Certification Booklet Wilo-EMU KS

Article Number 6080667
Edition 1606
Version number 01
Page format A4
Number of pages 8

PDF (331 kB)


General overview

Page format A4
Number of pages 72

PDF (46 MB)


Drainage and Sewage

Edition 2017
Page format A4
Number of pages 24

PDF (8 MB)


Wilo-EMU KS… / KS…Ex

Article Number 6061732
Edition 1607
Version number 03
Page format A4
Number of pages 26

PDF (2 MB)



Version number 3.0
Page format A4
Number of pages 69

PDF (854 kB)





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