Roll over image to zoom
SKU: 97924284
Grundfos MAGNA3 50-120-F Cast Iron Single Phase Circulator Pump with Composite Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
The Grundfos MAGNA3 50 120 F canned-rotor circulator pump integrates a permanent-magnet motor within a glandless structure for commercial building services. Eliminating mechanical shaft seals, internal liquid seals isolate stator windings. Connection interfaces feature DIN DN 50 ports for hydronic heating, air conditioning, and surface cooling loops.
Hydraulic performance delivers a maximum head of 12.0 meters and a maximum flow rate of 311.8 L/Min, matching 18.71 m3/h. Powered by a permanent-magnet motor, the unit operates on a 240 V single-phase supply at 50/60 Hz, with power input P1 of 498 W and current draw of 2.3 Amps. Maximum system operating pressure is rated at 10 bar.
Housing construction features a cast iron casing grade EN 1561 EN-GJL-200 enclosing a composite impeller. Internal components incorporate a carbon-fibre rotor can, stainless steel rotor cladding, and bearing plate, running on ceramic bearings. Net weight is 18 kg with a 280 mm port length, handling liquid temperatures -10 to 110 °C.
Control features include AUTOADAPT and FLOWADAPT operating modes with integrated differential pressure and temperature sensors. Wireless communication connects via Bluetooth to Grundfos GO Remote software for diagnostics. External interfaces provide two digital inputs, two signal relays, and a 0-10V analog input.
Features
- Energy Efficiency Index (EEI): 0.17 meeting European Union energy performance standards.
- Maximum rotational speed rating: 4230 rpm for continuous hydraulic balancing across system curves.
- Physical shipping package volume and gross weight: 0.046 m3, 19.7 kg for logistics planning.
- Standard regulatory compliance approvals: CE,VDE,EAC,MOROCCO,UKC for international building code conformity.
- Enclosure protection rating: IPX4D moisture resistance rating for commercial equipment rooms.
- Intelligent control regulation: AUTOADAPT, FLOWADAPT, and active FLOWLIMIT operational modes.
- Wireless connectivity: Integrated Bluetooth interface for Grundfos GO Remote application access.
- Casing thermal insulation: Includes clip-on shell insulation covers for system heat retention.
SPECIFICATIONS
| Max Flow | 311.8 L/Min |
| Max Head | 12 m |
| Power | 0.5 kW / 240v |
| Rated Current | 2.3 Amps |
| Suitable For | Commercial HVAC Circulation |
| Body Material | Cast Iron |
| Liquid Temperature | '-10°C to +110°C |
| Inlet Size | 50 mm |
| Outlet Size | 50 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
Through what connection pipe size does this variable circulator discharge peak delivery flow?
Regulating fluid output into building pipework, the MAGNA3 50-120-F delivers a maximum delivery flow rate of approximately 311.8 L/Min through DN 50 flanged connections.
How does the heavy duty cast iron construction ensure long term material reliability?
Internal flow pathways within the Grundfos MAGNA3 50-120-F are formed within a Cast Iron housing with composite impeller featuring electrocoated defense against corrosion.
What electrical supply voltage, motor kilowatt capacity, and current draw power this circulator?
Electrical integration of the MAGNA3-50-120-F requires 240 V to power its internal motor rated at 0.5 kW (500 W) drawing a rated current of 2.3 Amps.
What peak working pressure bar rating and fluid temperature limits are engineered into this pump?
Constructed for demanding hydronic loops, the Grundfos MAGNA3 50 120 F sustains operational pressures up to 10 bar in fluids from -10°C to +110°C.
What peak dynamic head push is generated by this cast iron heating pump?
Hydraulic vertical push generated by the MAGNA3_50_120_F establishes a peak dynamic head of approximately 12 m.
Need help choosing the right pump?
Our team of pump experts are here to help you find the perfect solution for your application.
- Free expert advice
- Pump sizing & system recommendations
- Fast response — call or email us