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Sub TWI 4.01-21-DM-E

Name: Sub TWI 4.01-21-DM-E
Brand: Wilo
SKU: 6101806

Submersible pump

Article number: 6101806

Series Sub TWI 4

Data sheet

Hydraulic data
Minimum efficiency index (MEI)	≥ 0.4
Maximum operating pressure PN	40 bar
Drinking water approvals	ACS (France) TrinkwV
Max. sand content	50 g/m³
Max. immersion depth	350 m
Max. volume flow Q_max	1.8 m³/h
Optimal volume flow Q_opt	0.9 m³/h
Max. delivery head H_max	117.6 m
Optimal delivery head H_opt	80.8 m
Min. fluid temperature T_min	3 °C
Max. fluid temperature T_max	30 °C
Number of stages	21

Motor data
Mains connection	3~400 V, 50 Hz
Rated power P₂	0.75 kW
Rated speed n	2865 1/min
Rated current I_N	2.05 A
Starting current I	10.6 A
Activation type	Direct On Line (DOL)
Power factor cos φ₁₀₀	0.77
Max. switching frequency t	20 rph
Motor diameter DM	95 mm

Cable
Connection cable length L	1.5 m
Cable cross-section	3x1,5 + 1G1,5

Materials
Pump housing	Stainless steel
Impeller	Stainless steel
Shaft	Stainless steel
Motor housing	Stainless steel

Installation dimensions
Pipe connection, discharge side DNd	Rp 1¼

Ordering information

Product data
Brand	Wilo
Product description	Sub TWI 4.01-21-DM-E
Article number	6101806
EAN number	4062679566665
Colour	Silver
Minimum order quantity	1
Date of sales availability	2026-09-25

Packaging
Packaging type	Cardboard box
Packaging property	Transport packaging
Pieces per pallet	1
Number per layer	1

Dimension, weight
Length with packaging	1150 mm
Length L	879 mm
Height with packaging	200 mm
Height H	98 mm
Width with packaging	200 mm
Width W	98 mm
Gross weight, approx. m	15 kg
Net weight, approx. m	13.1 kg

Fully submersible pump for vertical and horizontal installation.

For pumping in commercial areas of:

Drinking water
Process water with a max. sand content of 35 g/m³

Multistage hydraulics made of stainless steel with radial impellers in sectional construction. Motor connection in accordance with the NEMA standard. Discharge port with threaded flange and integrated non-return valve.

Three-phase current motor made of stainless steel for direct starting with varnish-insulated and resin-impregnated motor winding. The motor bearings are self-lubricating. Sealing on the fluid side is achieved by a mechanical seal. The motor is designed with a water-glycol coolant and has a hydraulic connection in accordance with the NEMA standard.

To ensure the motor is cooled, always operate the pump whilst it is immersed. Strictly adhere to the limit values for the maximum fluid temperature and the minimum flow velocity.

Depending on the minimum flow velocity, vertical installation is possible with or without a cooling shroud. Always use a cooling shroud for horizontal installation to ensure the required minimum flow velocity.

Scope of delivery

Submersible pump with connection cable
Installation and operating instructions

Operating data
Max. delivery head H_max	117.6 m

Unit
Minimum efficiency index (MEI)	≥ 0.4
Pipe connection, discharge side DNd	Rp 1¼
Maximum operating pressure p	40.0 bar
Max. sand content	50 g/m³
Protection class motor	IP68
Drinking water approvals	ACS (France) TrinkwV
Max. immersion depth	350 m
Min. fluid temperature T_min	3 °C
Max. fluid temperature T_max	30 °C
Net weight, approx. m	13.1 kg
Max. diameter D_max	98 mm

Motor data
Motor design	Submersible motor
Mains connection	3~400 V, 50 Hz
Rated power P₂	0.75 kW
Rated speed n	2865 1/min
Rated current I_N	2.05 A
Activation type	Direct On Line (DOL)
Max. switching frequency t	20 rph
Motor diameter DM	95 mm
Min. flow rate at the motor m/s	0.08 m/s

Cable
Connection cable length L	1.5 m
Cable cross-section	3x1,5 + 1G1,5

Materials
Pump housing	Stainless steel
Motor housing	Stainless steel
Shaft	Stainless steel
Impeller	Stainless steel

Ordering information
Net weight, approx. m	13.1 kg
Brand	Wilo
Product description	Sub TWI 4.01-21-DM-E
Article number	6101806

Mechanical accessories

Valves (7)
Shut-off valve
	Ball valve Rp 1¼	2663979	on request

Non-return valve
	Non-return valve RV/S R 1¼	2660840	on request

Pressure gauge
	Pressure gauge 0 - 6 bar	2028687	on request
	Pressure gauge 0 - 16 bar	2028692	on request
	Pressure gauge 0 - 10 bar	2033535	on request
	Pressure gauge 0 - 40 bar	2502048	on request
	Pressure gauge 0 - 25 bar	2660743	on request


Installation/setup (2)
Cable terminal
	Wire rope clamp (stainless steel) for stainless steel rope (Ø 3 mm)	21040	on request

Steel cable
	Stainless steel cable for lowering with 3 mm² cross-section	21039	on request


Motor cooling (2)
Cooling shroud, horizontal
	Cooling shroud 4H, 1.4301, 350, SH3 kit	6091817	on request

Cooling shroud, vertical
	Cooling shroud 4V, 1.4301, 350 kit	6091819	on request


Pressure control (6)
Pressure reducer
	Pressure reducer R ½	2531892	on request
	Pressure reducer R ¾	2531893	on request
	Pressure reducer R 1	2531894	on request
	Pressure reducer R 1¼	2531895	on request
	Pressure reducer R 1½	2531896	on request
	Pressure reducer R 2	2531897	on request


Pressurised expansion tanks (18)
Diaphragm pressure vessel DT5 junior
	Diaphragm expansion tank DT5 junior 60, PN 10	2515527	on request
	Diaphragm expansion tank DT5 junior 80, PN 10	2515528	on request
	Diaphragm expansion tank DT5 junior 100, PN 10	2515529	on request
	Diaphragm expansion tank DT5 junior 200, PN 10	2515530	on request
	Diaphragm expansion tank DT5 junior 300, PN 10	2515531	on request
	Diaphragm expansion tank DT5 junior 400, PN 10	2524232	on request
	Diaphragm expansion tank DT5 junior 500, PN 10	2515532	on request

Diaphragm pressure vessel type D
	Diaphragm pressure vessel type DD (12DD-PN16)	2515517	on request
	Type D (33D-PN10) diaphragm expansion tank	2534897	on request

Diaphragm pressure vessel type DE
	Diaphragm pressure vessel type DE (18DE-PN10)	2502038	on request
	Diaphragm pressure vessel type DE (25DE-PN10)	2515518	on request
	Diaphragm pressure vessel type DE (33DE-PN10)	2515519	on request
	Diaphragm pressure vessel type DE (60DE)	2515523	on request
	Diaphragm pressure vessel type DE (80DE)	2515524	on request
	Diaphragm pressure vessel type DE (100DE)	2515525	on request
	Diaphragm pressure vessel type DE (200DE)	2511823	on request
	Diaphragm pressure vessel type DE (300DE)	2515526	on request
	Diaphragm pressure vessel type DE (500DE)	2511831	on request

Electrical accessories

Pump control (5)
Wilo-EFC
	EFC0.75 3x380-480V 50/60Hz IP55	2193431	on request

Wilo-Control EC-WP
	Control EC-WP-1x12A-MT34-DOL-WM	2552324	on request
	Control EC-WP-2x12A-MT34-DOL-WM	2552326	on request

Switchgear BE-WP
	BE-WP-1x16A-MT34-DOL	4261867	on request
	BE-WP-1x25A-MT34-DOL	4261868	on request


Pump control/accessories (4)
Sensor card EFC
	Sensor Input Card MCB Wilo-EFC	6084915	on request

Output filter EFC (150-500 m cable length)
	2.4 A sin IP54 Wilo-EFC filter	6084559	on request
	2.5 A sin IP00 Wilo-EFC filter	6084574	on request
	2.5 A sin IP20 Wilo-EFC filter	6084900	on request


Pump control/Comfort control system (4)
W-CTRL-CC-WP
	W-CTRL-CC-WP-1x2,4A-T4-DOL-FC-WM-PKG	2540254	on request
	W-CTRL-CC-WP-2x2,4A-T4-DOL-FC-WM-PKG	2540255	on request
	W-CTRL-CC-WP-1x2,4A-T4-DOL-WM-PKG	2540230	on request
	W-CTRL-CC-WP-2x2,4A-T4-DOL-WM-PKG	2540231	on request


Pump control/interface module (6)
IF Modules EFC
	Profibus DP MCA Wilo-EFC	2193451	on request
	DeviceNet MCA Wilo-EFC	2193452	on request
	Profinet MCA Wilo-EFC	2193453	on request
	Ethernet/IP MCA Wilo-EFC	2193454	on request
	Modbus TCP MCA Wilo-EFC	2193455	on request
	BACnet/IP MCA Wilo-EFC	5114633	on request


Pressure control (4)
Pressure switching
	Pressure switching 0 – 16 bar	2501639	on request

Pressure switch WVA
	Pressure switch WVA up to 6 bar	180492096	on request
	Pressure switch WVA up to 10 bar	2502050	on request

Sensor kit
	Sensor kit	2501886	on request


Break tank/accessories (5)
Automatic kit
	Automatic kit R ½, 5 m cable	180493296	on request
	Automatic kit R ½, 20 m cable	2005645	on request
	Automatic kit R 1, 5 m cable	180549795	on request
	Automatic kit R 1, 20 m cable	2007158	on request

Level indicator AF 400
	Level indicator AF 400	2512862	on request


Cable (71)
Shrink sleeving connections
	heat-shrink connections 4 x 1.5 mm² and 2.5 mm²	4029677	on request
	heat-shrink connections 4 x 10 mm² and 16 mm²	4029678	on request
	heat-shrink connections 4 x 4.0 mm² and 6.0 mm²	4059213	on request

Motor cable
	cable ÖLFLEX CY 2x1,0 gr round screened	6007452	on request

Motor cable extension (motor cable kit QC)
	Motor cable kit QC 4 x 1.5 mm², 1.5 m	4096206	on request
	Motor cable kit QC AISI 316, 4 x 1.5 mm², 1.5 m	6080134	on request

Motor cable extension (motor cable connector kit)
	Motor cable connector kit	4087148	on request

Quick Connect cable
	Motor cable QC 4 x 1,5 mm², 10 m	4087121	on request
	Motor cable QC 4 x 1,5 mm², 20 m	4440091	on request
	Motor cable QC 4 x 1,5 mm², 30 m	4087122	on request
	Motor cable QC 4 x 1,5 mm², 50 m	4087129	on request
	Motor cable QC 4 x 1,5 mm², 80 m	4087130	on request
	Motor cable QC 4 x 1,5 mm², 100 m	4087131	on request
	Motor cable QC 4 x 2,5 mm², 50 m	4087132	on request
	Motor cable QC 4 x 2,5 mm², 80 m	4087136	on request
	Motor cable QC 4 x 2,5 mm², 100 m	4087137	on request

Splicing kit
	Sealing kit 4 x 1.5 to 4 x 10 mm²	4065698	on request
	Sealing kit 4 x 10 to 4 x 25 mm²	4065699	on request
	Cast resin cable connector Size 0 KIT	6001126	on request
	Cast resin cable connector Size 1a KIT	6001127	on request
	Cast resin cable connector Size 1b KIT	6001128	on request
	Cast resin cable connector Size 1c KIT	6001129	on request
	Cast resin cable connector Size 1d KIT	6001130	on request
	Cast resin cable connector Size 2a KIT	6001131	on request
	Cast resin cable connector Size 2b KIT	6001132	on request
	Cast resin cable connector Size 2c KIT	6000785	on request
	Cast resin cable connector Size 2d KIT	6001133	on request
	Cast resin cable connector Size 2e KIT	6001134	on request
	Cast resin cable connector Size 3a KIT	6001135	on request
	Cast resin cable connector Size 3b KIT	6001136	on request
	Cast resin cable connector Size 3c KIT	6001137	on request
	Cast resin cable connector Size 4 KIT	6001138	on request
	Cast resin cable connector Size 5a KIT	6094506	on request
	Cast resin cable connector Size 5b KIT	6079643	on request

Motor cable for drinking water (material sold by the metre)
	motor cable for drinking water 4 x 10 mm²	6019018	on request
	motor cable for drinking water 4 x 4 mm²	6019995	on request
	motor cable for drinking water 4 x 16 mm²	6022013	on request
	motor cable for drinking water 4 x 25 mm²	6038861	on request
	cable S07BB-F 3G1,5 round ACS	6045113	on request
	cable S07BB-F 4G4 round	6007626	on request
	cable S07BBH2-F 4G6 flat	6007614	on request
	cable S07BBH2-F 4G25 flat	6007547	on request
	cable S07BBH2-F 4G4 flat	6007618	on request
	cable S07BBH2-F 4G10 flat	6007624	on request
	cable S07BBH2-F 4G2,5 flat	6007636	on request
	cable S07BBH2-F 4G50 flat	6020298	on request
	cable S07BBH2-F 4G16 flat	6020318	on request

Motor cable for drinking water 4 inch motor
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 15 m	6079028	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 10 m	6079029	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 5 m	6079030	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 50 m	6079033	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 40 m	6079034	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 30 m	6079035	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 20 m	6079036	on request
	Cable kit for 4 inch motors AISI 304, 4 x 1.5 mm², 2.5 m	6091142	on request
	Cable kit for 4 inch motors AISI 304, 4 x 1.5 mm², 1.5 m	6091143	on request
	Cable kit for 4 inch motors AISI 304, 4 x 1.5 mm², 20 m	6091144	on request
	Cable kit for 4 inch motors AISI 304, 4 x 1.5 mm², 30 m	6091145	on request
	Cable kit for 4 inch motors AISI 304, 4 x 1.5 mm², 40 m	6091146	on request
	Cable kit for 4 inch motors AISI 304, 4 x 1.5 mm², 50 m	6091147	on request
	Cable kit for 4 inch motors AISI 304, 4 x 1.5 mm², 5 m	6091148	on request
	Cable kit for 4 inch motors AISI 304, 4 x 1.5 mm², 10 m	6091149	on request
	Cable kit for 4 inch motors AISI 304, 4 x 1.5 mm², 15 m	6091150	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 15 m	6091171	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 5 m	6030793	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 2.5 m	6007630	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 1.5 m	4099285	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 50 m	6069355	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 40 m	6091170	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 30 m	6043594	on request
	Cable kit for 4 inch motors AISI 316, 4 x 1.5 mm², 20 m	6035350	on request


Level control (25)
Float switch WA
	Float switch WA65 with 5 m cable	503211390	on request
	Float switch WA65 with 10 m cable	503211893	on request
	Float switch WA65 with 20 m cable	2004431	on request
	Float switch WA65 with 30 m cable	2004432	on request
	Float switch WA KR1 S with 5 m cable	6082806	on request
	Float switch WA KR1 S with 10 m cable	6082807	on request
	Float switch WA65 (PSN-X) with 20 m cable	6088843	on request
	Float switch WA65 (PSN-X) with 10 m cable	6088844	on request
	Float switch WA65 (PSN-X) with 5 m cable	6088845	on request

Submersible electrode
	Submersible electrode, 3 m	500183799	on request
	Submersible electrode, 4 m	2516278	on request
	Submersible electrode, 5 m	500937990	on request
	Submersible electrode, 10 m	2501937	on request
	Submersible electrode, 20 m	2516283	on request
	Submersible electrode, 25 m	2000601	on request
	Submersible electrode, 30 m	2514045	on request
	Submersible electrode, 35 m	2516284	on request
	Submersible electrode, 40 m	2516285	on request
	Submersible electrode, 50 m	2500315	on request
	Submersible electrode without cable	64873	on request
	Electrode cable H07RN-F 1x1.5 mm²	64904	on request

Float switch WAO
	Float switch WAO 65, 5 m cable	503211595	on request
	Float switch WAO 65, 10 m cable	2006027	on request
	Float switch WAO 65, 20 m cable	2004429	on request
	Float switch WAO 65, 30 m cable	2004430	on request

With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.

Extended Warranty
	Extended Warranty borehole/submersible pump TWU/TWI 3"-5"	2219597	on request

Supervision
	Supervision borehole/submersible pump TWU/TWI 3"-5"	2219331	on request

Installation
	Installation borehole/submersible pump TWU/TWI 3"-5"	2219366	on request

Commissioning
	Commissioning borehole/submersible pump TWU/TWI 3"-5"	2219397	on request

Maintenance
	Maintenance BASIC borehole/submersible pump TWU/TWI 3"-5"	2219537	on request
	Maintenance COMFORTborehole/submersible pump TWU/TWI 3"-5"	2219499	on request
	Maintenance PREMIUM borehole/submersible pump TWU/TWI 3"-5"	2219552	on request

System Optimisation
	System Optimisation borehole/submersible pump TWU/TWI 3"-5"	2219261	on request

Energy Solutions
	Energy Solutions borehole/submersible pump TWU/TWI 3"-5"	2219296	on request

Repairs
	Repair borehole/submersible pump TWU/TWI 3"-5"	2219620	on request

Sub TWI 4.01-21-DM-E

Submersible pump

Data sheet

Dimensions and dimensions drawings

Wilo-Sub TWI 4

Ordering information

Filtered by

Datasheet and documentation

Generate PDF

Catalogue creation

Mechanical accessories

Shut-off valve

Non-return valve

Pressure gauge

Cable terminal

Steel cable

Cooling shroud, horizontal

Cooling shroud, vertical

Pressure reducer

Diaphragm pressure vessel DT5 junior

Diaphragm pressure vessel type D

Diaphragm pressure vessel type DE

Electrical accessories

Wilo-EFC

Wilo-Control EC-WP

Switchgear BE-WP

Sensor card EFC

Output filter EFC (150-500 m cable length)

W-CTRL-CC-WP

IF Modules EFC

Pressure switching

Pressure switch WVA

Sensor kit

Automatic kit

Level indicator AF 400

Shrink sleeving connections

Motor cable

Motor cable extension (motor cable kit QC)

Motor cable extension (motor cable connector kit)

Quick Connect cable

Splicing kit

Motor cable for drinking water (material sold by the metre)

Motor cable for drinking water 4 inch motor

Float switch WA

Submersible electrode

Float switch WAO

Extended Warranty

Supervision

Installation

Commissioning

Maintenance

System Optimisation

Energy Solutions

Repairs