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Thermal protective cut-outs and magnetic protective cut-outs

Thermal protective cut-outs and magnetic protective cut-outs

Thermal protective cut-outs are used for instance for protection of motors and transformers. They incorporate a bi-metal strip through which the current flows. The temperature of the bi-metal strip rises as the current increases. If the overload current is excessive, the bi-metal strip bends, the cut-out mechanism is triggered, and the circuit is broken.

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