What design characteristic most commonly indicates a removable or drawout circuit breaker?

A removable or drawout circuit breaker is most commonly characterized by its capability to function at higher voltages, typically 5kV or above. This design feature allows for easier maintenance and replacement without disrupting the entire electrical system. In industrial settings, where reliability and flexibility are crucial, this characteristic is essential.

The design that supports these higher voltage levels inherently lends itself to the removable or drawout feature, as it allows maintenance personnel to safely isolate and replace the unit while minimizing downtime and risk. In contrast, circuit breakers operating at 1kV or lower are less likely to have drawout features due to the different design and safety considerations associated with lower voltage applications. Permanent connections and higher mechanical strength do not directly relate to the designation of a breaker as removable or drawout; rather, they pertain to its overall build and operational capabilities.