How Does A Circuit Breaker Break?

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The short circuit case is easy to detect with an electromagnet that will have a strong magnetic field when so much current flows. However, the overload case isn't that abrupt. For that, the breaker uses a bimetalic coil that expands as it heats.

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The short circuit case is easy to detect with an electromagnet that will have a strong magnetic field when so much current flows. However, the overload case isn't that abrupt. For that, the breaker uses a bimetalic coil that expands as it heats. https://ift.tt/eA8V8J

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