Fluid injection valve with electromagnetic actuator assembly

An electromagnetic actuator assembly for a fluid injection valve is disclosed. It comprises a first coil (14), a valve needle (22) being arranged axially moveable along a longitudinal axis (L) of the actuator assembly, and an armature (16) being arranged axially moveable along the longitudinal axis and being mechanically coupled to the valve needle (22). A second coil (28) is mechanically coupled to the armature (16). The first and the second coil form a transformer. Further, a valve assembly and a fluid injection valve are disclosed.