What current passes through the relay?

Question

Electronics

Good afternoon friends, but please do not kick hard, I'm not an electronics engineer.
I have 2 relays, with 5 legs, one relay for 5 volts, the other for 12 volts.
The microcontroller sends 5 volts. Relay 5 volts, responds to the signal of the microcontroller and switches, relay 12 volts, refuses.
Question: What is the maximum current that can be passed through the relay, in terms of not switching, namely skipping.
If I have a 12 volt power supply, and I run it to the pump, 12 volt, through a 5 volt relay (switched by a 5 volt microcontroller signal) Is that correct? or i dont understand something

Answer 1

Winding current and maximum current for contacts can be found in Google at the request of <relay name> datasheet.
It is undesirable to connect the relay directly to the MK, the winding current is higher than that allowed for the pins of the MK, plus the reverse voltage when the armature is released will send a sickly current pulse back to the MK (you need to install a protective diode).
Here is the minimum secure binding scheme: www.pighixxx.com/test/portfolio-items/connect-a-relay