SB is a submersible multistage booster designed for domestic applications. SB requires an external control unit like Grundfos PM1 or PM2 enabling complete pump control with user friendly interface.
Grundfos SB 3-45 A is a submersible pump designed for the pumping of clean water for domestic and rainwater applications. It is silent when submerged and therefore a noiseless alternative to surface-mounted pumps. The pump is built from high-quality composite and stainless steel materials that are resistant to corrosion.
The SB 3-45 A is equipped with a 15 m supply cable, and the maximum installation depth is 10 m below the water level, with a liquid temperature ranging from 0 °C to 40 °C.
The SB 3-45 A is ideal for operation in a well or ground tanks, as it easily prevents solid particles from entering the pump. The maximum particle size is 1 mm.
The single-phase model is effectively protected against any accidental overload by built-in thermal protection.
The pump has built-in thermal protection, which immediately stops the pump if it overheats. Having cooled down, the pump automatically restarts when it reaches a normal temperature.
| Rated flow | 3 m³/h |
| Rated head | 33.4 m |
| Maximum head | 45 m |
| Impellers | 3 |
| Max. Particle | 1 mm |
| Approvals | CE |
| Curve tolerance | ISO9906:2012 3B |
| Return valve | NO |
| Rated speed | 2800 rpm |
| Pump housing | Composite, PP – GF30 |
| Impeller | Composite, PPO-20GF |
| Range of ambient temperature | -10 .. 50 °C |
| Type of inlet connection | STRAINER |
| Pump outlet |
G 1″ |
| Pressure rating for connection |
PN 6 |
| Maximum installation depth | 10 m |
| Pumped liquid | Water |
| Liquid temperature range | 0 .. 40 °C |
| Selected liquid temperature | 20 °C |
| Density | 998.2 kg/m³ |
| pH-value range | 4-9 |
| Power input P1 |
0.8 kW |
| Rated power – P2 |
0.55 kW |
| Mains frequency |
50 Hz |
| Rated voltage |
1 x 220-240 V |
| Rated current |
3.6 A |
| Starting current |
12 A |
| Cos phi |
0.946 |
| Rated speed |
2800 rpm |
| Capacitor size – run |
12 µF/425 V |
| Enclosure class (IEC 34-5) | IP68 |
| Insulation class (IEC 85) |
F |
| Built-in motor protection | YES |
| Length of cable | 15 m |
| Cable type |
H07RN-F 3G1 |
| Type of cable plug | AUS |
Since 1973, Dowdens has been servicing the pumping and water industries. Starting in Mackay and now located in 5 locations throughout Queensland, we have grown to become the go-to place for everything Pumping and Water treatment.
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