Wet rotor circulation pump MAGNA3 25-100 180 1x230V PN10 97924247

Circulation pump for heating systems and water circulation

The Grundfos MAGNA3 25-100 is a wet-rotor circulation pump designed for efficient liquid circulation in heating installations, domestic hot water systems, and industrial processes. The wet-rotor design and integrated electronics ensure quiet operation and optimized energy consumption. This is an ideal solution for installers looking for reliable equipment and for end-users expecting comfort and savings.

Construction and application

The MAGNA3 is characterized by a compact stator design and a motor based on permanent magnets, which translates to high energy efficiency. The use of a built-in differential pressure control system (proportional or constant pressure) allows for precise adjustment of the pump's operation to the current system needs. The pump is designed to work with water, and its operating temperature range is from -10 to 110°C. It finds application in residential buildings, schools, hospitals, hotels, and industrial plants – anywhere where efficient liquid circulation is required. Thanks to the possibility of night-time setting reduction, the pump allows for additional energy savings during periods of lower heat demand.

Functionality and communication

MAGNA3 offers wide communication possibilities thanks to support for PROFIBUS, RS-485, EtherNet/IP, Modbus RTU, BACnet MS/TP and LON/LONWorks protocols. Additionally, it has a potential-free switching contact and 0-10 V / 2-10 V and 0-20 mA / 4-20 mA interface signals. The built-in speed controller enables smooth adjustment of the pump's performance. This allows you to precisely adapt the pump parameters to the specifics of the installation and minimize operating costs. The maximum pump capacity is 5.43 m³/h with a maximum head of 10 meters. Pipe connections with a diameter of 1 ½ inches (40) with an external tapered gas thread (BSPP) ensure easy installation in existing installations. The energy efficiency index (EEI) of 0.18 confirms the high energy efficiency of this model.