100A Melbourne Handle is usually employed to activate or reset a circuit breaker or switch that has a 100 amp rating. This type of handle is commonly used in commercial, industrial, and residential applications, where high levels of electrical current are required. The specific design and features of a 100A handle may vary depending on the type and brand of the switch or breaker it is used with. This product can be designed either for manual operation, or for automatic operations wherein automatic trip mechanisms or other safety features will be present.