Pump unit

A pump assembly comprising:

• a stator housing;
• an electrical drive motor arranged in the stator housing;
• an electronics housing with a base wall and an outer peripheral wall and an open end and with a cover closing the open end, the electronics housing defining an interior with one of the base wall and the outer peripheral wall or both the base wall and the outer peripheral wall defining a power connection opening;
• a circuit board and electronic components arranged in the interior of the electronics housing, the circuit board having a first electrical plug coupling formed thereon and the circuit board having a second electrical plug coupling formed thereon;
• a circuit board connection element fixing means configured to releasably fix the circuit board directly to the electronics housing;
• a power connection element configured as a separate plastic shaped part not integral with the electronics housing and not integral with the circuit board, the power connection element comprising electrical strip conductors, a circuit board plug connector connected to the electrical strip conductors and connected to and disconnectable from the first electrical plug coupling on the circuit board and an external electrical plug connector connected to the electrical strip conductors and forming an external electrical connection for connection of a component situated outside the electronics housing;
• and
• a power connection element fixing means configured to releasably fix the power connection element directly to the electronics housing and to release the power connection element from the electronics housing, the power connection element fixing means comprising at least one of a non-positive fit, a positive fit, a lock-in connection and a screw connection between the power connection element and the electronics housing such that the power connection element is removeable and replaceable, wherein:
• the power connection element fixing means mounts the plastic shaped part of the power connection element to the exterior of the electronics housing with the power connection element coming into contact with an exterior of one of the walls of the electronics housing and with the circuit board plug connector extending through the power connection opening into the electronics housing interior and with the external electrical plug connector arranged outside the electronics housing interior.