Grundfos NB 50-250/263 AF2ABQQE

• Water supply
• Industrial pressure boosting
• Industrial liquid transport
• Indoor climate (air conditioning, heating and ventilation)
• Irrigation

• Capacity up to 1300 m3/h
• Head up to 160 mWk
• Optimized hydraulics in housing and impeller ensures unimpeded fluid flow
• O-ring seal between pump housing and cover, so no risk of leakage
• Highly corrosion resistant
• Available with IE2 and IE3 motors
• Available with various shaft seal and material variants
• PN 10, 16 and 25 bar

Product name NB 50-250/263 AF2ABQQE
Product number 97989054
EAN number 5710627478636

Pump housing Cast iron
Pump housing EN-GJL-250
Pump housing ASTM class 35
Wear ring Brass
Impeller Cast iron
EN-GJL-200
ASTM class 30
Shaft Stainless steel
EN 1.4301
AISI 304
Internal coating pump housing CED
Material code A
Code for rubber E.

Maximum ambient temperature 55 ° C
Maximum operating pressure 16 bar
Pipe connection standard EN 1092-2
Size of the suction connection DN 65
Pressure connection size DN 50
Pressure stage for pipe connection PN 16
Bearing Lubrication Grease
Pump house with feet Yes
Filling block N
Code for pipe connection F2

Fluid handled Water
Liquid temperature range -25 .. 120 °C
Medium temperature during operation 20 ° C
Density 998.2 kg / m³

Engine type SIEMENS
IE efficiency class IE3
Rated power - P2 4 kW
Mains frequency 50 Hz
Nominal voltage 3 x 380-420D / 660-725Y V.
Rated current 8.3-7.51/4.83-4.37 A
Starting current 710-710 %
Cos phi – power factor 0.82
Nominal speed 1460 rpm
Efficiency IE3 88.6%
Motor efficiency at rated load 88.6-88.6 %
Motor efficiency at 3/4 power 89.2-89.2 %
Motor efficiency at half power 88.6-88.6 %
Pool number 4
Enclosure class (IEC 34-5) IP55
Insulation class (IEC 85) F.
Motor protection PTC
Engine No. 83V15213
Mont. regulations according to IEC 34-7 IM V1

Minimum Efficiency Index, MEI ≥ 0.70
Net weight 78 kg
Gross weight 95 kg
Transport volume 0.315 m³
Country of origin HU
HS code 84137051
Frequency converter NONE
Pressure sensor N