Grundfos 98924281 45S50-12 4-inch submersible well pump with 12 stages, 2" NPT discharge, and a 3.7 kW (5 HP) 1-phase 230V motor. Constructed with stainless steel pump and motor, stainless steel impellers, and a CSCR motor type. Rated flow of 10.7 m³/h (47 GPM) and rated head of 89 m (292 ft) at 3450 rpm. Includes a built-in valve and features IP68 enclosure, Class F insulation, and external thermal protection.

Actual impeller diameter

72.9 mm

Applic motor

NEMA

Approvals

CE,EAC,CSA

Axial load max

680 kg

Built-in temp transmitter

No

Cos phi - power factor

0.92

Curve tolerance

2012 3B

Density

998.2 kg/m³

DOE pump energy index CL

0.84

Enclosure class (IEC 34-5)

IP68

ErP status

EuP Standalone/Prod.

Impeller

Stainless steel

Insulation class (IEC 85)

F

KVA code

F

Mains frequency

60 Hz

Maximum ambient pressure (bar)

60

Maximum liquid temperature (°C)

40

Model

A

Motor

Stainless steel

Motor diameter

4 in

Motor no

96449949

Motor type

MS4000

Motor type 1-phase

CSCR

Motor version

T40

Product name

45S50-12

Product no

98924281

Pump

Stainless steel

Pump outlet

2 in NPT

Pump speed on which pump data are based

3450 rpm

Pumped liquid

Water

Rated current

27.5 A

Rated flow

10.7 m³/h

Rated head

89 m

Rated power - P2

3.7 kW

Rated speed

3450 rpm

Rated voltage

1 x 230 V

Selected liquid temperature (°C)

20

Service factor

1.15

Shaft seal for motor

HM/CER

Stages

12

Starting current

400 %

Thermal protec

external

Valve

YES

Windings

Enamelled