The Grundfos NBE 50-315/277 S2-A-F2-A-BQQE 4P 4kW is a high-efficiency, speed-regulated end-suction centrifugal pump, identified by part number 99534758. It features an integrated variable frequency drive (VFD) for optimal performance and energy savings, operating on 3x380-500V power. This 4 kW pump boasts an IE5 energy efficiency class and IP55 protection, making it suitable for various industrial and commercial applications. Constructed with a robust cast iron pump housing and a durable stainless steel impeller, it ensures reliable fluid handling for liquids with temperatures ranging from -25°C to 120°C and a maximum operating pressure of 16 bar. Its design includes DIN flange connections (DN 50) and a motor flange size of FF215, with a total weight of 104 kg.