| 摘要 |
PURPOSE: A power switch is provided to reduce arc and lengthen useful life of device by stabilizing neutral line and minimizing excessive current, while minimizing operation failure rate of device. CONSTITUTION: A power switch is characterized in that the width difference(W2) between an N-phase fixed terminal(10') of neutral line and a fixed terminal(20') of stand-by power is smaller than the width difference(W1) between a three-phase fixed terminal(10) of utility power and a three-phase fixed terminal(20) of stand-by power. A moving terminal(30') interposed between the N-phase fixed terminal of neutral line and the fixed terminal of stand-by power, has a rounded lower outer periphery. Thus, the moving terminal of neutral line is disconnected from the fixed terminal of stand-by power after a three-phase moving terminal(30) is disconnected, and connected to the fixed terminal of utility power prior to the connection of the three-phase moving terminal.
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