A Power Relay is a device that can make a transition in one or more electrical output circuits when the input meets certain specified conditions. So what factors should be considered when choosing a power relay?
1. The voltage and current in the circuit being controlled;
2. When the power relay is selected, the power supply voltage of the general control circuit can be used as the basis for selection. The control circuit should be able to provide sufficient operating current to the power relay, otherwise the relay pull-in is unstable;
3. The controlled circuit needs several sets and what forms of contacts;
4. Control the circuit's supply voltage, the maximum current that can be supplied.
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