Economy MHIE 203N (3~380/400/440 V, FKM) | Wilo
Similar to figure

Economy MHIE 203N (3~380/400/440 V, FKM)

Technical data
Tender text

Multistage, non-self-priming, horizontal high-pressure centrifugal pump in block design with horizontal suction port and vertical pressure port and built-in, air-cooled frequency converter. The integrated frequency converter enables variable speed, pressure and PID control.

Speed control

  • "Speed control" : Manually with green button or via external signals
  • "Differential pressure, constant" : Pressure control with pressure sensor, setpoint adjustment via green button or via external signals
  • "PID control": other constant control variables (temperature, volume flow, pressure....) with sensor, setpoint adjustment with green button, by means of external signals

The electronic module provides various protective functions. They include overload protection, the detection of low water, mains undervoltage or overvoltage, high ambient temperature, missing phases, blocked pumps and short-circuits. Error messages are issued on the display.

Short-circuit-proof +24 V voltage output with max. contact strength of 30 mA is present on the electronic module. The module has potential-free contacts for SSM, red and green LED for ON/OFF signal.


  • In1: Input sensor signal 4-20 mA, 0-10 V, 0-20 mA or 2-10 V
  • In2: Input setpoint 0-20 mA, 0-10 V, 4-20 mA or 2-10 V


  • + 24 V voltage output with max. contact strength of 50 mA
  • Potential-free collective fault and run signals
  • External On/Off mode. IR communication
  • Plug-in position for Wilo IF-Modules Modbus, BACnet, CAN, PLR, LON for connection to the building automation

This pump has a compact design with a continuous motor pump shaft and a bidirectional mechanical seal.

The pump is suitable for water supply and pressure boosting, industrial recirculation systems, process water and cooling water circuits. It can also be used in fire extinguishing systems, washing systems as well as for irrigation.

Special features/product advantages

  • Space-saving, compact block design
  • All hydraulic parts which come into contact with the fluid, such as stage chambers, impellers, guide vane apparatuses and pump housings, are made of stainless steel.
  • Green-button technology and display enable particularly simple parameterisation and operation of the electronic module.
  • Drinking water approval (ACS, KTW, WRAS) for all components in contact with the fluid (EPDM version)

Scope of delivery

  • Wilo-Multivert MHIE high-pressure multistage centrifugal pump
  • Installation and operating instructions

Design notes

  • Optional plug-in IF-Modules
  • Sensors are available as accessories.
Product data
Min. fluid temperature Tmin -15 °C
Max. fluid temperature Tmax 90 °C
Max. ambient temperature Tmax 50 °C
Maximum operating pressure PN 10 bar
Maximum inlet pressure p inl 6 bar
Motor data
Mains connection 3~400 V, 50/60 Hz
Voltage tolerance 400/50:+/-10%, 380/60:+/-10%, 440/60:+/-6%
Rated power P2 0.75 kW
Rated current IN 3.2 A
Rated speed n 3500 1/min
Motor efficiency ηM 50% 73.4 %
Motor efficiency ηM 75% 76.5 %
Motor efficiency ηM 100% 77 %
Insulation class F
Protection class IP54
Pump housing Stainless steel
Impeller Stainless steel
Shaft Stainless steel
Shaft seal Q1BVGG
Gasket material FKM
Installation dimensions
Pipe connection on the suction side DNs Rp 1
Pipe connection on the discharge side DNd Rp 1
Ordering information
Brand Wilo
Product description Economy MHIE 203N (3~380/400/440 V, FKM)
Net weight, approx. m 16 kg
Article number 4171765

Installation and operating instructions

Wilo-Economy MHIE

Article Number 4090993
Edition 0416
Page format A4
Number of pages 34
PDF (3 MB)

Wilo-Economy MHIE

Page format A4
Number of pages 15
PDF (64 KB)

Wilo-Economy MHIE

Article Number 4090996
Edition 1609
Page format A4
Number of pages 21
PDF (1 MB)

Wilo-Economy MHIE

Article Number 4090993
Edition 2021-07
Page format 209.9 x 297.0 mm
Number of pages 150
PDF (10 MB)

Certificate REACH (Documents)

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (212 KB)


DWG (1 MB)


STP (1 MB)


DWG (19 KB)


DWG (19 KB)


DWG (19 KB)