Grundfos

NB 250-500/525

Code: 98305350 EAN: 5711492780312
Type NB
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Technical specifications

Pump typeNB
Nominal flow (m³/h)667.9 m³/h
Nominal head (m)35.87 m
Minimum efficiency index (MEI)0.48
Power P2 (kW)90 kW
Phases3
Phases3
Voltage (V)380-420/660-725 V
Frequency (Hz)50 Hz
Enclosure classIP55
Frequency converterNone
Max. liquid temp. (°C)120 °C
Min. liquid temp. (°C)0 °C
Max. ambient temp. (°C)40 °C
Max. operating pressure10 bar
Connection pressure ratingPN 10
Pump housing materialCast iron
Impeller materialCast iron
Shaft sealBAQE
Gross weight1660 kg
Net weight1590 kg
Motor number92848342
EAN code5711492780312

Performance curve

Performance curve NB 250-500/525

Hover over the curve to read flow and head at any point.

Documents and datasheets

Equivalent alternatives

Pumps in the same hydraulic class as 98305350 (equivalent flow and head), available in the catalogue.

Grundfos 98305350