A submersible pump (100) powered by an electric motor includes at least one inlet (102), at least one outlet (104), and at least one passage (106) between the inlet (102) and the outlet (104). A non-return valve (112) is provided in the passage (106). Further, a pressure switch (128), which monitors a pressure within the passage (106), is provided. The submersible pump (100) also includes a printed circuit board (PCB) assembly (202), the PCB assembly (202) having a PCB housing (212) and a PCB (214). The PCB (214) controls at least the motor. Further, an overlap is provided between at least two of the non-return valve (112), the pressure switch (128), and the PCB assembly (202) in a horizontal plane.