WEBVTT

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On a motor starter there is a launcher (solenoid contactor)

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1 * / this electromagnet advances the drive pinion towards the flywheel

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2 / it closes the power contact (200 Amps and more)

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The pusher or the ignition key will not resist 200 Amps! Hence relaying

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The start-up (key or pushbutton) only controls the coil of the launcher (inf. 10A)