Connecting protection fuses before relay

[eladn]

I am not sure. In your tutorials the RC snubber protects the built in relays (installed within the old H32B) from the coil of the AC contractor. In that case, the snubber is connected in parallel with the AC contractor. The AC contractor can be seen as a consumer device from the point of view of the built-in relay. So if we generalized this example, when we apply inductive AC load over relays we need to use an RC snubber over the relay's load contacts to protect it from the load consumed.

Now the question is how can we calculate the right resistor & capacitor for the applied load. In KinCony's RC snubber you probably used the right R&C for the AC contractor's coil as a consumer.