Grundfos MAGNA1 50-180F (280) Variable Speed Circulator 240V

The Grundfos MAGNA1 50-180F (280) is an A-rated, EuP‑ready variable-speed circulator designed for circulating water in heating and domestic hot-water systems where variable flow control is needed.

• Variable-speed operation with nine light fields for pump-setting indication and selectable control curves (three proportional-pressure, three constant-pressure, three fixed-speed) to match system demand.
• Electrical and performance details: 240V 1Ph 50Hz supply, motor output range listed as 22.13–769W, full load current 0.24–3.4A.
• Hydraulic capacity: maximum flow up to 37 m3/h and maximum head up to 16 m.
• Mechanical and service facts: cast iron construction, 50 mm flanged connections, 280 mm port-to-port dimension for the 50-100F to 50-180F range, liquid temperature range −10 to 110 °C, maintenance-free design and low noise operation.
• Physical and warranty details: weight ~20.5 kg; external dimensions 280 mm (h) × 254 mm (w) × 376 mm (d); manufacturers warranty 2 years.

Use this pump where reliable, energy-efficient circulation is required for heating circuits, mixing loops, main pumps and heating/air‑conditioning systems; it also supports hot-water priority via an external signal that forces operation on the maximum curve.