Series description

Your advantages

  • Energy saving thanks to high efficiency motors IE
  • Easy installation and start thanks to self-priming capacity
  • Protecting against frequent start & stop (…-S…A versions)
  • On/off-automation for a high operational safety (…-S…A versions)


Peripheral pump


  • Water supply from water tank
  • Sprinkling from water tank
  • Irrigation and spraying from water tank
  • Rainwater utilization from water tank


  • Directly flanged motor
  • Thermal motor protection switch for 1~230V version
  • Pressure switch and pressurized tank for automation and protection of versions PW-…S…A

Scope of delivery

  • Peripheral product
  • Installation and operating instructions

Type key



PW for Pump Wesco

Pump type

… for self-priming, N for non self-primingS with flow switch

Structural properties

S for plastic, C for coating

Functional or material characteristics

20*10 = 200 W

Delivery rate/10

2 for the third generation

Series number

S for small, N for normal and L large

Tank size

E for 50 Hz, M for 60 Hz


A for automatic

Automatic unit

Technical data

  • Mains connection 1~230 V, 50 Hz (for …E versions)
  • Mains connection 1~220 V, 60 Hz (for …M versions)
  • Connection (pressure and suction side): from 1’’ up to 1 ½ ‘’ - Depending on the models
  • Fluid temperature from +5°C to +40°C
  • Fluid temperature from 5°C to +60°C [for PB-…S…A]
  • Ambient temperature from 0°C to +40°C
  • Storage temperature from -20°C to +60°C
  • Max. inlet pressure: From 0.7 bars up to 1.4 bars – Depending on the models
  • Max. outlet pressure: From 2.9 bars up to 5.0 bars – Depending on the models
  • Switch-on pressure: 1.1 bars (only for PW-175SEA)
  • Switch-off pressure: 1.8 bars (only for PW-175SEA)
  • Switch-on pressure: 1.6 bars (only for PW-252SEA)
  • Switch-off pressure: 2.4 bars (only for PW-252SEA)
  • Protection class 1~: IP X4


  • Pump housing: EN-GJL-200
  • Impeller: Brass
  • Terminal box cover: ABS
  • Impeller cover: Brass
  • Shaft: Stainless steel 1.4006
  • Mechanical seal: Carbon/ Ceramic


REACH regulation

Edition 2019-10
Page format 209.9 x 296.7 mm
Number of pages 4

PDF (853 kB)


PDF: Wilo-PW


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