GRUNDFOS SP submersible pumps are designed specifically for borehole supply applications. They are of multistage centrifugal impeller design and all parts are made from stainless steel with water lubricated rubber bearings. A submersible motor is fitted beneath the pump and suction is effected through a strainer between the pump and motor.

Standard pumps are designed for the pumping of non-aggressive water. 'N and R' versions are available for applications requiring a higher degree of corrosion resistance.

All SP pumps carry a drinking water approval and meet European Minimum Efficiency Index guidelines

The pump is coupled to a sealed, liquid cooled 2-pole asynchronous GRUNDFOS motor constructed of stainless steel with ceramic bearings. Motors are also fitted with a built-in sensor which monitors running temperature. When fitted with the patented GRUNDFOS MP 204 control unit protection is provided against dry running, mechanical motor defects, excessive motor running temperature and irregular power supply.

The fitting of a MP 204 unit is recommended for motor control and monitoring and also extended motor life.

Note that irrespective of the fitting of a MP 204 control unit a remote starter is required. Due to the low starting torques of submersible motors it is recommended that Direct-on-Line starters are used for all motor sizes. 

Enclosure Class: IP58
Insulation Class: H
Voltage: 3x415V
Speed: 2900rpm

Operating Conditions

Pumped Liquid: Thin, clean chemically non-aggressive liquids without solid particles or fibres.
Max. Liquid Temperature: +40°C
Max. Water Depth: 600m
Min. Borehole Diameter: 200mm


Model Motor Full Load Current (A) Istart / I Motor Dimensions (mm) Weight (kg)
SP 30-8 7.5 10 18.8 4.5 MS6000 1602 565 1037 95 142 53
SP 30-13 11 15 24.8 4.7 MS6000 2151 634 1517 138 142 72
SP 30-17 15 20 34 5 MS6000 2600 699 1901 138 142 85
SP 30-21 18.5 25 42.2 5.1 MS6000 3039 754 2285 138 142 98
SP 30-26 22 30 48 5 MS6000 3579 814 2765 138 142 112