I am working on a project where I need a relay, and bought an NO HKE CMP8-S-DC48V-A relay for the job. This is my first time working with relays though, and while I more or less understand what they are and how they work, I can't seem to figure out how to wire it, and most tutorials I've looked at don't demo this type of package.

I'm testing the relay on my breadboard. By looking at the diagram on their site, I've connected my "controlling" circuit to the pins at the bottom for the coil (the ones to the side that are close together) and I've connected the circuit that I want the relay to switch on the other two pins (the bigger ones close to the middle). Both circuits are just resistors hooked up to the same power source for the moment, with a switch on my controlling circuit. Apologies for making it look so sloppy, the package is not breadboard friendly.

So what I expect is that when the switch is off for the coil of my relay, that there will be no current flowing the red wires, and through the 10K resistor. Yet, when the switch is off and the power is connected, I get ~12V across the 10K resistor measuring with my multimeter, while no current is flowing through the resistor in my controlling circuit with the coil. If I toggle the switch on, current obviously flows through both resistors.

I find it confusing that an NO relay is passing current while its coil isn't energized. What am I missing here?

Edit:

Here is the schematic of the circuit

^{simulate this circuit – Schematic created using CircuitLab}