What aspects should be considered when selecting a circuit breaker?

The needs of every application vary, but the first decisions for circuit protection should be determining if the device needs branch level protection (UL489), device level protection only (UL1077), or some other specific certification standard. After that, the focus should be on voltage/current needs as well as a focus on the conditions of the application itself (such as ambient temperature, inrush, shock, and other conditions.

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