Amarex NS

Submersible motor pump

Vertical single-stage submersible motor pump for wet installation, with cutter (S), 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.

Main Applications

  • Waste water management
  • Drainage systems
  • Waste water treatment plants
  • Sludge disposal
  • Drainage of rooms and areas at risk of flooding on municipal, commercial and industrial premises

Technical Data


  • Easy and fast installation/removal with polarised, absolutely watertight cable entry and KSB plug-type connection ensuring correct installation
  • Motor absolutely watertight, also in the event of damage to the cable sheath and core insulation, with individually stripped, tinned and resin-sealed conductors
  • High operating reliability with optimum motor selection for duty type S1, thermal class F, explosion-proof variant in “ATEX T4, FM/CSA Ex Class I, Division 1, Groups C & D, T4”
  • Long service life with shaft made of corrosion-resistant stainless steel
  • Zero maintenance, ideal for continuous duty, with long-life bearings sealed on both sides, grease-packed for life
  • Environmentally friendly, non-toxic, food-approved oil fill for lubricating the mechanical seal (liquid reservoir)
  • Energy-saving design with optimised hydraulic system and high efficiency
  • Reliable and non-clogging design with optimised cutter (S impeller)
  • Close-coupled pump design prevents risk of leakage (pump volute casing and motor housing cast as a single piece)
  • Stationary pump sets easy to install and remove with automatic, bolt-free connection; leakage prevented by elastic sealing elements
  • Ease of service with wetted hexagon socket head cap screws made of stainless steel which are easy to undo even after years of operation
  • Double safety by two bi-directional mechanical seals with oil reservoir filled with environmentally friendly oil
  • Well suited for mechanical seal with covered spring for abrasive and aggressive fluids
  • Only one set of spare parts for all pump sizes thanks to modular design system