Need help designing / understanding this ‘circuit’

I'm a novice builder of whatever I can imagine with not a lot of formal training in electronics, but I follow directions well so I imagine I have a good chance of pulling this off with the right advice.

Here's the deal...

Keeping it simple, I need to turn on electricity to a 1500 watt device (heater) when a mechanical circuit I've made is closed. But I don't want to run 1500 watts through the wire I've used to create the mechanical circuit. so I'm writing in for advice on how I should go about doing this.

The design is that once air is ran through a vent, a flap is actuated which moves and creates contact with two wires, and I need to figure out how I can convert these two wires coming into contact into turning on power to a 1500 watt heater (without running 1500 watts of current through the two wires on the vent flap. So is what I'm talking about here called a 'relay?'

Like I was saying I'm now trained in electronics so I would need somewhat detailed instructions on how to go about making this happen.

Thanks for your time I'm all ears!

Can the two wires coming into contact be replaced with something like a microswitch.
If so, then put the switch in series with a mains rated coil on a relay across the mains.
The wire from the relay to the switch will need to have a mains rating, and may need aditional insulation if they are not enclosed, ie conduit. The normally open contact of the relay will go in series with your heater across the mains. There are some dangerous voltages, you need to put the relay and microswitch in an enclosure, plastic or metal, if metal then ground the case. If you can't use a mains rated microswitch, then you will have to use a transformer to take the mains down to a low voltage for your switching system. The relay coil can then be rated at the same voltage. Often low voltage AC coils are not available, so you will need to put a rectifier on the transformer secondary and use a DC coil, they usually come in a range of voltages, often,5,12 and 24, which are all safe. The current rating on the relay switch contacts is 1500/mains voltage minimum,
Cheers,
Richard