Grundfos ALPHA2 25-60 N 130 Circulator Pump


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Grundfos ALPHA2 25-60 N 130 Circulator Pump

P/N 99411287

Grundfos ALPHA2 high-efficiency circulator pumps are designed for circulating liquids in heating systems. The stainless-steel variant of the ALPHA2 is suitable for e.g. domestic hot-water systems. With an energy efficiency index (EEI) well below the ErP benchmark, it ensures substantial energy savings.

The AUTOADAPT function continuously adapts the pump performance to the actual heat demand, i.e. the size of the system and changing heat demand during the year. The AUTOADAPT feature finds the setting that provides optimal comfort with minimal energy consumption and makes the commissioning fast, safe, and easy. ALPHA2 also offers proportional-pressure, constant-pressure and constant-curve control modes.

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Rated flow 1.94 m³/h
Rated head 3.28 m
Maximum head 60 dm
TF class 110
Model E


Pump housing Stainless steel
EN 1.4308
Impeller Composite
PES 30% GF + PESU-GF20%


Range of ambient temperature 0 .. 40 °C
Maximum operating pressure 10 bar
Type of connection G
Size of connection 1 1/2 inch
Pressure rating for connection PN 10
Port-to-port length 130 mm


Pumped liquid Water
Liquid temperature range 0 .. 110 °C
Selected liquid temperature 60 °C
Density 983.2 kg/m³

Electrical data

Minimum power input - P1 3 W
Power input P1 34 W
Mains frequency 50 / 60 Hz
Rated voltage 1 x 230 V
Maximum current consumption 0.04 .. 0.32 A
Enclosure class (IEC 34-5) X4D
Insulation class (IEC 85) F
Built-in motor protection NONE
Thermal protec ELEC


Aut. night automatic reduced night-time duty included


Energy (EEI) 0.17
Terminal box position 6H
Net weight 2.04 kg
Gross weight 2.2 kg
Shipping volume 0.004 m³
Danish VVS No. 380463160
Swedish RSK No. 5790514
Finnish LVI No. 4615346
Norwegian NRF no. 9043162
Country of origin DK
Custom tariff no. 84137090622081967