Grundfos SP1A series all stainless steel bore pumps are the workhorse models of the Grundfos submersible bore pumps.   With a flow range of between 2.5 L/min out to 18 L/min, the SP1A range is designed for very low flows.   We supply these pumps in 3 motor configurations, the first is a  single phase 240v 2 wire and earth motor which does not require a starter box and has a lower price because of this although it does have a capacitor in the motor and if the capacitor blows, you will need a replacement motor as the capacitor cannot be replaced, in addition, to replace the motor you need to pull the pump out of the bore, 2 wire and earth motors are only available for 0.37 kW, 0.55 kW, 0.75 kW and, 1.1 kW 240v motors.   The second is the 240v single phase 3 wire and earth motor which does require a starter box, the starter box is installed at the top of the bore and contains start and run capacitors and a changeover relay plus electrical connections, if either capacitor blows, it is a simple exercise to replace the capacitor and no need to pull the pump out of the bore, all single phase motors above 1.1 kW are 3 wire and earth motors.   The third option is the 3 phase 414v motor, a 3 phase motor is generally a little less in price that a single phase 3 wire and earth motor and the cable connecting the motor to the starter box at the top of the bore can be a smaller thickness cable which will make it less costly, 3 phase motors require contactors and overloads.

Click here to download the flow curves for the SP1A range.

Click here to download the SP series manual and data book.

To download the request for quote form click here