Grundfos MAGNA1 50-120F (280) Variable Speed Circulator 240V

The Grundfos MAGNA1 50-120F (280) is an A‑rated, EuP‑ready variable‑speed circulator designed for circulating water in heating and domestic hot‑water systems. It delivers up to 33 m3/h flow and 12 m head while running on 240V single‑phase power, making it suitable for main pumps, mixing loops and heating/air‑conditioning applications with variable flows.

• Variable‑speed control with nine light fields for clear pump‑setting indication and selectable curves: three proportional‑pressure, three constant‑pressure and three fixed‑speed options.
• External hot‑water priority input forces operation to the max curve for systems with hot‑water demand (for example solar‑heating arrangements).
• Low energy consumption and low noise level; maintenance‑free design to support long operating life.
• Technical specifics: cast‑iron construction, pumped liquid water, liquid temperature range −10 to 110 °C, max flow 33 m3/h, max head 12 m.
• Physical and electrical data: 280 mm port‑to‑port dimension, weight 19.6 kg, motor power range 20.2–533 W, full load current 0.22–2.37 A, voltage 240V 1Ph 50Hz.

Built for systems requiring reliable, energy‑efficient circulation, this MAGNA1 model combines selectable control curves, hot‑water priority and a compact flanged design to suit a range of HVAC and domestic hot‑water installations. Manufacturer warranty: 2 years.