Based on this product's specifications, here are some alternatives and similar models
Safety Thermal Fuse BLOW 7078# for Microwave Ignition 0.7 A / 5 kV
Summary description:
BLOW 7078# is a safety thermal fuse designed for microwave ignition systems, rated at 0.7 A and 5 kV. It protects the microwave high-voltage/ignition circuit by interrupting current under overtemperature or fault conditions. Suitable for repair or maintenance of microwave ovens and related high-voltage components where specified electrical and safety parameters match.