Below is a concept for a "Stand Alone" Housing for the switch, which would have to be clamped or placed next to the kettle actuator
Below is an image of an integrated housing with the Kettle Assembly Itself along with the above "Triangle" Actuator Concept. This includes housing with a stepper motor and fasteners for the motor. This takes out the variable of the actuator possibly moving the housing away from the kettle as it turns on the switch as the above concept shows.