Power switch. <br>1, branch switch: overload current is rated 1.5 times the current, the use of three-phase four-pole leakage switch, action time 0.1s-0.2s, action current 15 (30) mA. <br> 2, the total switch: overload current - rated current 1.5 times, the use of three-phase four-pole air switch. <br> 3. All PLCs/PCs should be equipped with a regulatory power supply.
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