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4W Motors – 50 Hz

Mahavir’s 4W Submersible well pump set are suitable for wells of minimum 100mm or larger in internal diameter. Continuous rating in 5°C to 25°C water as per IEC 60034-1
This product is designed for best efficiency and can be best used for Solar Water pumping,Agriculture, Industrial water supply, Pressure boosting, Firefighting, Municipality and water works schemes
Pump set comes with a 2-Pole water cooled and lubricated rewindable type motor with insulation class B and a pump having semi-axial and radial hydrodynamic layout Thus, suitable for operations when completely immersed in water or suitable liquids.

Technical Data

Parameter 1-Phase Model 3-Phase Model
Rated Voltage 230V AC 415V AC
Rated Frequency 50 Hz 50 Hz
Rated Speed 2900 RPM 2900 RPM
Voltage tolerance -15% to +6% -15% to +6%
Protection IP68 IP68
Max. Starts per hour 10 10
Min. Start per month 1 1
Rotation Anticlockwise Anticlockwise
Max. Temperature 33?C 33?C
Mounting Standards NEMA Standards NEMA Standards
Starting Method Capacitor start and run Star or Start/Delta
Insulation Class B B

Material of Construction

Part Name Material
Upper and lower housing Grey Cast Iron or AISI 304 or AISI 316 or Brass
Motor shaft Chromium Steel
Bearing bush Leaded Tin Bronze
Rotor laminations Electrical Sheet Steel
Rotor conductor core EC Copper or Die Cast aluminum
Stator laminations Electrical Sheet Steel
Stator windings PVC or Polywrap Electro Grade Copper
Breather diaphragm Nitrile Rubber
Thrust bearing Resin & C40 V/S SS 420
Stator casing Stainless Steel Sheet
Cable gland Nitrile Rubber
Cable conductor Electro Grade Copper
Cable insulation PVC or Rubber sheathed

Model De-Code


1 - Phase Models

MODEL No. of Pole kW HP Volt Ɲ min-1 Max Load Current (A) Nominal Eff (%)
4WB10.37CESL 2 0.37 0.50 240 2740 5.30 42.0
4WB10.55CESL 2 0.55 0.75 240 2750 5.20 45.0
4WB10.75CESL 2 0.75 1.00 240 2760 7.50 50.0
4WB101.1CESL 2 1.10 1.50 240 2760 10.50 53.0
4WB101.5CESL 2 1.50 2.00 240 2770 13.80 55.0
4WB102.2CESH 2 2.20 3.00 240 2770 19.80 60.0
4WB103.0CESH 2 3.00 4.00 240 2780 26.00 61.0
4WB103.7CESH 2 3.70 5.00 240 2780 31.00 62.0
4WB105.5CESH 2 5.50 7.50 240 2790 45.00 63.0
MODEL Height (H) Width(W) Weight Volume
mm ft. mm ft. Kg lb cu.ft
4WB10.37CESL 390 1.28 98 0.32 10.60 23.37 0.25
4WB10.55CESL 425 1.39 98 0.32 11.90 23.37 0.27
4WB10.75CESL 450 1.48 98 0.32 13.50 29.76 0.29
4WB101.1CESL 510 1.67 98 0.32 16.50 36.38 0.32
4WB101.2CESL 535 1.76 98 0.32 17.602 38.81 0.33
4WB102.2CESH 600 1.97 98 0.32 20.75 45.75 0.36
4WB103.0CESH 600 1.97 98 0.32 22.9 50.49 0.36
4WB103.7CESH 660 2.17 98 0.32 24.4 53.79 0.39
4WB105.5CESH 760 2.49 98 0.32 24.4 53.79 0.45

3 - Phase Models

MODEL No. of Pole kW HP Volt Ɲ min-1 Max Load Current (A) Nominal Eff (%)
4WB30.75IKSL 2 0.75 1.00 415 2740 3.0 63.0
4WB301.1IKSL 2 1.10 1.50 415 2740 4.0 63.0
4WB301.5IKSL 2 1.50 2.00 415 2740 4.8 67.0
4WB302.2IKSH 2 2.20 3.00 415 2760 6.9 69.0
4WB303.0IKSH 2 3.00 4.00 415 2760 9.0 70.0
4WB303.7IKSH 2 3.70 5.00 415 2780 10.6 70.0
4WB304.5IKSH 2 4.50 6.00 415 2780 12.6 71.0
4WB305.5IKSH 2 5.50 7.50 415 2790 15.5 72.0
MODEL Height (H) Width(W) Weight Volume
mm ft. mm ft. Kg lb cu.ft
4WB30.75IKSL 450 1.48 98 0.32 13.50 29.76 0.29
4WB301.1IKSL 510 1.67 98 0.32 13.00 28.66 0.32
4WB301.5IKSL 535 1.76 98 0.32 14.20 31.31 0.33
4WB302.2IKSH 600 1.97 98 0.32 17.80 39.24 0.36
4WB303.0IKSH 600 1.97 98 0.32 19.3 42.55 0.36
4WB303.7IKSH 660 2.17 98 0.32 21.3 46.96 0.39
4WB304.5IKSH 660 2.17 98 0.32 22.9 50.49 0.39
4WB305.5IKSH 760 2.49 98 0.32 24.4 53.79 0.45