The Grundfos SQN 3 series of pumps are suitable for both continuous and intermittent operations for a variety of applications including:

• domestic water supply (direct connection to the house),
• irrigation,
• tank filling applications,
• water transfer between tanks,

SQN 3 pumps offer the following features:

• all 316 stainless steel construction,
• run-dry protection is inbuilt,
• high efficiency pump and motor,
• excellent wear resistance,
• protection against upthrust,
• soft start is built in to the motor (no high startup current draw),
• overvoltage and undervoltage protection,
• overload protection,
• overtemperature protection.

The Grundfos SQN submersible pumps have a built in electronic unit containing a frequency converter that provides a "soft start".   This means that unlike conventional submersible motors that have a high start-up current demand, the Grundfos SQN pumps soft start provides a smooth and steady acceleration to normal operating speed in approximately 2 seconds.   This eliminates high current draw on start-up as well as minimising wear on the pump and overloading the power system.

To download the performance curves for the SQN-3 - click here

To download the Big Book on the SQN series in pdf format - click here (3 meg)