Frigidaire produces household appliances, both under its brand and for Electrolux, as well as products for Sears-Kenmore. The lever switch for the microwave door interlock, identified by part number 5304509458, is specifically crafted for microwave use.
This lever engages the interlock switch when the microwave door is securely shut.
Given the potential hazard of high-voltage capacitors retaining charge after the appliance is disconnected from power, it is advisable for a skilled technician to manage the installation of this component.