What are the differences between ac and dc static switches?
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AC is alternating current and DC is direct current. The current-carrying capacity is very different to the AC switches and the DC switches.
An AC switch has natural current zeroes, whereas DC switches do not have them. An AC switch varies in its magnitude and in its direction, whereas the DC switches maintain a steady and a unidirectional flow.
When the AC circuit is broken, the arc is extinguished quickly, whereas when a DC circuit is broken, the arc usually draws for a longer time before it is extinguished. This is a desirable condition for AC switches and it is an undesirable condition for DC switches.
For the same amount of current flow, (usually in Amps), the rating of the DC Voltage (VDC) switches are usually lower than the rating of the AC Voltage (VAC) switches.
An AC switch has natural current zeroes, whereas DC switches do not have them. An AC switch varies in its magnitude and in its direction, whereas the DC switches maintain a steady and a unidirectional flow.
When the AC circuit is broken, the arc is extinguished quickly, whereas when a DC circuit is broken, the arc usually draws for a longer time before it is extinguished. This is a desirable condition for AC switches and it is an undesirable condition for DC switches.
For the same amount of current flow, (usually in Amps), the rating of the DC Voltage (VDC) switches are usually lower than the rating of the AC Voltage (VAC) switches.
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