I found a relay datasheet at here. Just Wondering, can this relay handle 2 seperate circuit or just 1 circuit as highlighted in my diagram below?. Thank you
This is a single pole change over
So the common, can be switched between one of two "outputs",
or in the other direction, it can select between one of two "inputs",
This is a single pole relay, meaning that it has one connection that is transferred from one terminal to another terminal when it is operated. Those connections are called "Normally closed" and "normally open", and the other connection is often called "Common", which provides some confusion on occasion because it is only common to the two terminals.