Symbol of time relay - Solutions - Huaqiang Electronic Network

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

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The time relay is an automatic switching device that realizes delay control by using electromagnetic principle or mechanical principle, and is generally divided into two types: power-on delay and power-off delay. The text symbol of the time relay is KT, and someone may ask for its graphical symbol, as shown below:
First, Figure 1, Figure 2 are the graphical symbols of power-on delay and power-down delay


Second, the electrical symbol:
Normally open delay closed --

Normally closed delay disconnected --

Normally open delay disconnected --

Normally closed delay closed --
The time relay is mainly used to reflect the automatic control of the time interval. Its electrical symbol can also be expressed as shown below.