Grundfos SBA 3-45 A Submersible Pump

The Grundfos SBA 3-45 A submersible pump is a fully integrated and submersible pressure boosting solution, specifically designed for domestic and small-scale applications, such as water supply from cisterns or rainwater harvesting. This "all-in-one" unit eliminates the need for an external pump controller, simplifying its installation and operation, making it an ideal choice for boosting pressure in domestic systems, as well as for use in agriculture or surface water management.

High-level performance and reliability

With a nominal flow rate of 3 m³/h and a maximum head of 45 metres, the SBA 3-45 A is capable of providing constant and reliable water pressure, even in situations where significant flows are required. Its start-up pressure of 2.2 bar ensures optimal pump operation without the need for complex adjustments. Additionally, its design with three impellers allows efficient operation under various conditions, guaranteeing adequate pressure at all times.

"All-in-one" technology and integrated control

The Grundfos SBA 3-45 A incorporates an integrated control unit, eliminating the need to install an external pump controller. This not only simplifies its installation but also reduces maintenance requirements and facilitates its use, making it ideal for users seeking a practical and efficient solution. This pump also features a float switch that automatically stops operation when water levels are too low, protecting the pump from damage and prolonging its lifespan.

High-quality materials and durability

The pump body and impellers are made from durable materials, ensuring a long service life and excellent corrosion resistance. The hydraulic body is composed of a high-quality composite, while the pump housing is made of PP - GF30 (glass fibre reinforced polypropylene), materials that guarantee strength and durability in demanding environments. The impellers are made from PPO-20GF, a high-performance composite that ensures pumping efficiency even in challenging conditions.

Simplified installation and handling

The SBA 3-45 A is submersible and can be installed at a maximum depth of 10 metres, making it perfect for applications in wells, cisterns, or water tanks. Its standard G 1” outlet connection is compatible with a wide variety of piping systems, facilitating its integration into any installation. Additionally, thanks to its compact design and net weight of just 13.2 kg, it is easy to handle and install in confined spaces.

Key technical specifications:

• Nominal flow rate: 3 m³/h
• Nominal head: 32.6 m
• Maximum head: 45 m
• Number of impellers: 3
• Maximum particle diameter: 1 mm
• Start-up pressure: 2.2 bar
• Maximum installation depth: 10 m
• Pumped liquid temperature: 0 °C to 40 °C
• Ambient temperature: -10 °C to 50 °C
• Cable length: 15 m
• Net weight: 13.2 kg
• Protection grade: IPX8
• Insulation class: F

Quiet and efficient operation

With a nominal power of 0.55 kW and a maximum input power of 0.9 kW, the Grundfos SBA 3-45 A pump offers efficient and quiet operation. The motor design and its integrated control system ensure that the pump operates without vibrations or annoying noises, making it ideal for residential environments where noise might be a concern. Additionally, the integrated thermal protection system ensures that the pump automatically shuts off in case of overheating, protecting the motor and ensuring a long service life.

Energy efficiency and sustainability

The Grundfos SBA 3-45 A pump is designed not only to deliver exceptional performance but also to be energy-efficient. With a cos phi of 0.951 and a nominal electrical consumption of 4 A, this model provides an excellent balance between performance and energy savings, making it an environmentally friendly option with long-term operational cost benefits.

Other standout features:

• Integrated return valve to prevent water backflow, ensuring uninterrupted operation.
• Float switch, which protects the pump by automatically shutting it off when water levels are too low.
• Pumped liquid pH range: 4-9, allowing use with water of different qualities and chemical characteristics.
• CE certification, ensuring compliance with European quality and safety standards.