![]() The second safety mechanism is operated by a thermal metallic strip that bends and trips a switch into the "Off" position when too much heat is applied by a prolonged electrical surge.The first is an electromagnet that immediately shuts off the electrical current when it senses a large electric surge.Low-voltage circuit breakers have 2 safety mechanisms in place to keep your appliances from getting fried by electric overloads: High-voltage circuit breakers are used alongside power lines and in other places that use more than 72,000 volts regularly. ![]()
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