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Do-It-Yourself (DIY) Question & Answer Forum
Reversed MCBs
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<blockquote data-quote="Tony S" data-source="post: 462392" data-attributes="member: 20864"><p>Back to front, what is the right way?</p><p></p><p>The feed is normally connected to the fixed contact, arcing horns (if fitted) and the arc chutes first plate so that the arc is drawn up and across the splitter plates and therefore cooling the arc. A blow out coil is used in large breakers where a heavy fault has to be cleared quickly. It draws the arc to follow the curved arcing horn and pulls it to a longer and cooler path.</p></blockquote><p></p>
[QUOTE="Tony S, post: 462392, member: 20864"] Back to front, what is the right way? The feed is normally connected to the fixed contact, arcing horns (if fitted) and the arc chutes first plate so that the arc is drawn up and across the splitter plates and therefore cooling the arc. A blow out coil is used in large breakers where a heavy fault has to be cleared quickly. It draws the arc to follow the curved arcing horn and pulls it to a longer and cooler path. [/QUOTE]
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