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.
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    Main Applications

    • Waste water transport
    • Waste water management
    • Drainage systems
    • Waste water treatment plants
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    Technical Data

    • Max. flow rate330 m3/h
    • Max. head42 m
    • Max. allowed working pressure4 bar
    • Max. allowed fluid temperature40 °C


    • 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)

    Characteristic curves

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    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, 60 Hz (2573.830_US)PDF10.764/19/2021
    Amarex, 50 / 60 Hz, CE (2573.820_EN)PDF12.114/19/2021
    AS5 (2317.8233_EN)PDF1.434/19/2021
    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)PDF11.054/19/2021
    TitleFormatSizeLast change
    Amarex D-max (2573.521_EN)RTF0.034/19/2021
    Amarex F-max (2573.522_EN)RTF0.034/19/2021

    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

    KSB - one of the world's leading manufacturers of industrial valves and pumps

    Founded in 1871 in Frankenthal (Germany), KSB has been one of the leading suppliers of pumps and industrial valves for over 150 years. With more than 15,000 employees worldwide and its own sales and marketing, manufacturing facilities and service operations, KSB develops and produces custom-fit pumps for various applications.

    As an experienced pump manufacturer, its product portfolio includes building and industrial technology, water transport, wastewater treatment and power plant processes. Thanks to innovative research and development, KSB can meet the most diverse requirements of customers. Benefit from many years of experience and technical expertise as a renowned pump manufacturer.

    KSB pump manufacturers: the best solution for your plant
    Industrial pumps and valves from KSB cover a wide range of applications and are highly energy-efficient. Products convince with the most innovative technology as well as with systems that have been tried and tested for many years - including the Etanorm water pump. Achieving more than 1.5 million sales worldwide, Etanorm is the most successful standard water pump. With KSB spare parts and services.

    KSB ensures the operational reliability of its industrial pumps and valves. The KSB success formula for high-performance pumps lies in the technological strength in hydraulics, materials and automation.

    Competent service right from the start
    The numerous production facilities ensure that KSB as a pump manufacturer can guarantee customer proximity and first-class service. The experienced specialists are certified to ensure excellent quality and extensive experience. KSB Service takes care of the commissioning, inspection, servicing and maintenance of your pumps, valves and complete systems directly on site.  KSB also provide you with spare parts quickly. This means you get the best service directly from your pump manufacturer.