Time relay selection method general, determine, desired, methods

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Time relay selection method
In 1, the relay is used in a DC circuit and AC circuit, and to determine the rated voltage, commonly used for 220V, 110VDC/AC;
2, determine the installation methods, such as: guide rail type, convex, embedded ( or panel is positioned inside the cabinet opening drawer cabinet installation, general selection guide rail type )
3, determine the desired delay type, for energizing delay or power-off time delay, and the delay time range.
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