Main applications

  • Advanced treatment / 3.stage
  • Bio. treatment / 2.stage
  • Biogas
  • Breweries
  • Building services
  • Chemical industry
  • Cooling water and condensate
  • Drainage
  • Drainage pump stations
  • Energy
  • Flood / stormwater holding tanks
  • Watertreatment

Main applications

  • Flood control
  • Food and beverages
  • Industry engineering
  • Irrigation
  • Lake, Damwater extraction
  • Mech. treatment / 1.stage
  • Mining
  • Municipal waste water
  • Power Stations > 100 MW
  • Pressure Drainage
  • Process
  • Sea -& Riverwater Extraction

Main applications

  • Sewage treatment plants
  • Surface drainage
  • Suspended solids treatment
  • Systems
  • Waste water
  • Waste water / sewage
  • Waste water transport
  • Water
  • Water Extraction
  • Water treatment
  • Water works
  • Watertransport


Vertical single-stage submersible motor pump for wet installation, with cutter (S), free-flow impeller (F) or diagonal single-vane impeller (D), stationary or transportable version. Amarex N pumps are floodable, single-stage, single-entry close-coupled pump sets which are not self-priming. ATEX-compliant version available.


Pumping waste water, especially untreated waste water containing long fibres and solid substances, fluids containing gas or air, and raw, activated and digested sludge; for dewatering and water extraction, drainage of rooms and areas at risk of flooding.


  • Three-phase asynchronous squirrel-cage motor
  • Type of protection Ex db IIB (applies to explosion-proof pump sets only)
  • Enclosure: IP68 to EN 60529/IEC529

Desing Details

Shaft seal amarex N

Depending on the motor design:
▪ Two bi-directional mechanical seals in tandem
arrangement with liquid reservoir, with leakage chamber on some models
▪ Double cartridge seal with leakage chamber

Impeller type amarex n

▪ Various application-oriented impeller types (ð Page 14)

Bearings amarex n

▪ Various application-oriented bearings (ð Page 8)

Drive end:
▪ Grease-packed bearings sealed for life
▪ Maintenance-free

▪ Standard bearings
– Grease-packed bearings sealed for life
– Maintenance-free
▪ Reinforced bearings
– Grease-lubricated bearings
– Can be re-lubricated

Overview of technical data

Q (50Hz)0.0 – 190.0 (m³/h)
H (50Hz)0.0 – 49.0 (m)
Type of bearingRolling element bearings
DriveElectric motor
Drive frequency50 Hz /60 Hz
Type of driveElectric motor
Drive voltageHigh voltage
Connection to power supply400 V, 3~
Explosion protectionEX-SCHUTZ EEX D IIB, ATEX 100A
Type of installationClose-coupled
Type of couplingNone
Type of lubricationGrease lubrication
Pump set locationWet well
Shaft material (EN standard)1.4021
Casing material (EN standard)JL 1040
Free passage100.0 (mm)
Installation positionVertical
Shaft seal typeMechanical seal
Main applicationsWaste water / sewage, Industry and process engineering, Building services
Casing materialCast iron
Maximum drive rating4.2 (kW)
Type of installationStationary, Transportable