Transfer switch starts the circuit directly
Source: InternetPublisher:失踪的猫 Updated: 2020/05/09
As shown in the figure, SM is a transfer switch, also called a combination switch. Common models include HZ10, HZ15 and other series. It has a rotating handle that drives three movable contacts to rotate simultaneously, connecting or cutting off three pairs of static contacts respectively. When it is turned on, the motor M rotates; when it is turned off, the motor M stops. This circuit is mostly used in mechanical equipment such as grinders and lathes.
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