How to choose the power relay correctly?

There are several factors to consider when selecting a power relay:
1. Load: The capacity of the power relay needs to be selected according to the size of the load to ensure that the relay can withstand the load current.
2. Voltage: The voltage level of the power relay needs to be selected according to the voltage of the circuit to ensure that the relay can withstand the circuit voltage.
3. Environment: It is necessary to consider the working environment of the relay and select the appropriate protection level and protective measures.
4. Lifespan: It is necessary to consider the lifespan of the relay and choose a relay with long life and high reliability.
5. Price: You need to choose a relay with an appropriate price based on your budget.