
Grundfos MAGNA3 65-120 F High-Efficiency ECM Smart Circulator
Engineered for commercial heating, cooling, and domestic hot water recirculation systems, the Grundfos MAGNA3 65-120 F is a premium, wet-rotor smart circulator pump designed to deliver unmatched energy efficiency and advanced system control. Powered by an intelligent permanent-magnet motor (ECM) and an integrated frequency converter, this pump automatically analyzes your hydronic system to find the optimal duty point, slashing energy consumption by up to 75% compared to traditional fixed-speed pumps.
The MAGNA3 features Grundfos’s signature AUTOADAPT and FLOWADAPT modes, which continuously tune pump performance to match changing system demands without requiring manual commissioning. With its built-in heat energy meter, wireless multi-pump communication capabilities, and full BMS integration modules, it provides facility managers with comprehensive data transparency and precise system configuration right out of the box.
Key System Performance Baselines:
- Smart Control Suite: Advanced AUTOADAPT, FLOWADAPT, and proportional-pressure modes automatically optimize system balancing and eliminate the need for external balancing valves.
- High-Efficiency ECM Technology: Permanent-magnet motor combined with an integrated electronic controller drastically reduces operating costs and easily satisfies strict energy efficiency requirements.
- Built-In Communication Protocols: Supports wireless cross-pump coordination for alternating/standby operation, alongside seamless expansion slots for Modbus, BACnet, and LonWorks networks.
- Flange Configuration: Standard 65mm inline cast iron flanged connection layout designed for straightforward drop-in integration into high-volume commercial loops.
⚠️ Application Profile: This MAGNA3 circulator configuration is highly optimized for commercial hydronic heating loops, air conditioning/chilled water cooling networks, ground-source heat pump circuits, and secondary mixing loops.
Technical Specifications
| Max Head | 12 m (120 dm) |
| Nominal Flow | Up to approx. 25.8 m³/h |
| Energy Efficiency Index (EEI) | 0.17 |
| Voltage | 1 x 208-230V, 50/60 Hz |
| Max Current Consumption | 0.18 – 3.45 A |
| Pressure Rating | PN6/10 |
| Liquid Temperature Range | -10°C to 110°C (14°F to 230°F) |
| Motor Type | 4-pole synchronous permanent-magnet (ECM) motor, integrated frequency converter |
| Design | Canned-rotor (wet-rotor); no shaft seal; self-lubricating, maintenance-free bearings |
| Port-to-Port Length | 340 mm |
| Connection Type | Flanged, 65mm inline, cast iron |
Specifications sourced from Grundfos technical documentation. Confirm exact ratings against the installation manual before final system design.
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.