A load control device adapted to control the amount of power delivered to an electrical load from an AC power source between an adjustable high-end trim level and a low-end trim level, the load control device comprising: - a bidirectional semiconductor switch operable to be coupled in series electrical connection between the AC power source and the electrical load, the bidirectional semiconductor switch having a control input; - a triggering circuit coupled to the control input of the bidirectional semiconductor switch; - a timing circuit coupled with the triggering circuit and adapted to generate a firing voltage signal, wherein the timing circuit comprises a potentiometer adapted to allow a user to adjust the amount of power delivered to the electrical load between the adjustable high-end trim level and the low-end trim level, wherein the triggering circuit is adapted to render the bidirectional semiconductor switch conductive each half-cycle of the AC power source in response to the firing voltage signal; and - a user-accessible adjustment actuator adapted to reduce the adjustable high-end trim level from a first level to a second level lower than the first level, the user-accessible adjustment actuator having substantially no effect upon a low-end trim level of the load control device, characterized in that the user-accessible adjustment actuator comprises a mechanical switch and in that the timing circuit comprises: - a first resistor; - a capacitor coupled to the first resistor and operable to conduct a charging current from the power source through the first resistor such that the firing voltage signal is produced across the capacitor; and - a transient voltage suppressor coupled in series electrical connection with the mechanical switch, the series combination of the transient voltage suppressor and the mechanical switch coupled in parallel electrical connection with the first resistor; wherein the value of the resistance of the potentiometer at the low-end trim level is selected to be sufficiently high so that the charging current through the capacitor remains sufficiently small so that the voltage developed across the first resistor at the low-end trim level does not exceed the breakover voltage of the transient voltage suppressor so that the low-end trim level is not affected by the state of the mechanical switch. - a bidirectional semiconductor switch operable to be coupled in series electrical connection between the AC power source and the electrical load, the bidirectional semiconductor switch having a control input; - a triggering circuit coupled to the control input of the bidirectional semiconductor switch; - a timing circuit coupled with the triggering circuit and adapted to generate a firing voltage signal, wherein the timing circuit comprises a potentiometer adapted to allow a user to adjust the amount of power delivered to the electrical load between the adjustable high-end trim level and the low-end trim level, wherein the triggering circuit is adapted to render the bidirectional semiconductor switch conductive each half-cycle of the AC power source in response to the firing voltage signal; and - a user-accessible adjustment actuator adapted to reduce the adjustable high-end trim level from a first level to a second level lower than the first level, the user-accessible adjustment actuator having substantially no effect upon a low-end trim level of the load control device, - a first resistor; - a capacitor coupled to the first resistor and operable to conduct a charging current from the power source through the first resistor such that the firing voltage signal is produced across the capacitor; and - a transient voltage suppressor coupled in series electrical connection with the mechanical switch, the series combination of the transient voltage suppressor and the mechanical switch coupled in parallel electrical connection with the first resistor;