Country and language selection

International websites


Americas / Oceania

Africa and Middle East

Asia / Pacific

Amarex Submersible motor pump
Submersible motor pump


Vertical single-stage submersible motor pump for wet installation, with free-flow impeller (F-max) or open dual-vane impeller (D-max), stationary or transportable version. Single-stage, single-entry close-coupled pump sets which are not self-priming. ATEX-compliant version available.
See all documents and downloads

Main Applications

  • Waste water transport
  • Waste water management
  • Drainage systems
  • Waste water treatment plants
Show all applications

Technical Data

  • Max. head42 m
  • Min. head1 m
  • Max. allowed working pressure4 bar
  • Max. allowed fluid temperature40 °C

Your KSB contact: We’re here to support you

Do you need any assistance finding the right material number?
We’ll soon provide a list so you can directly place your purchase order.
Meanwhile please contact our support:

Your local contact

Your KSB contact : We’re here to support you


  • High efficiency thanks to enhanced power density (Wh/m3), overall efficiency of up to 69 %, lower total cost of ownership
  • Non-clogging (no clogging by wet wipes) with patented deflection technology and D-max impeller
  • Long service life with high operating reliability and durable bearings (100,000 operating hours)

Technical Data

  • FunctionPump
  • Connection typeFlange
  • Drive conceptWith electric actuator
  • Max. flow rate330 m3/h
  • Min. flow rate1 m3/h
  • Max. head42 m
  • Min. head1 m
  • Mains frequency50 Hz, 60 Hz
  • Mains voltage400 V, 460 V, 230 V, 575 V, 380 V, 415 V, 500 V, 690 V, 208 V
  • Casing materialEN-GJL-250/A48 CL 35B
  • Nominal pressurePN 16
  • Max. allowed working pressure4 bar
  • Suction behaviourNon-self-priming
  • Max. allowed fluid temperature40 °C
  • Min. allowed fluid temperature0 °C

Characteristic curves


TitleFormatSizeLast change
Amarex (2573.025_EN)PDF0.774/19/2021
TitleFormatSizeLast change
Amarex, 60 Hz (2573.460_US)PDF4.124/19/2021
Amarex, 50 Hz (2573.450_EN)PDF4.234/19/2021
TitleFormatSizeLast change
TitleFormatSizeLast change
Amarex, 50 / 60 Hz, CE (2573.820_EN)PDF12.114/19/2021
Amarex, 60 Hz (2573.830_US)PDF10.655/22/2021
AS5 (2317.8233_EN)PDF1.434/19/2021
Amarex, IEC-EX (2573.860_EN)PDF12.069/14/2021
TitleFormatSizeLast change
TitleFormatSizeLast change
Amarex, 50 Hz (2573.5_EN)PDF12.324/19/2021
LevelControl Basic 2 (4041.5_EN)PDF7.234/19/2021
Amarex, 60 Hz (2573.56_US)PDF51.547/10/2021
TitleFormatSizeLast change
Amarex D-max (2573.521_EN)RTF0.034/19/2021
Amarex F-max (2573.522_EN)RTF0.034/19/2021