Not quite sure I understood you completely, but are you referring to the 'hot' being connected to terminal 2 instead of terminal 1? Doesn't really matter on the ITC-1000F units. It gets rectified and filtered and regulated to 24VDC internally, which is why there's no earth ground on any of the terminals. Some European standards require switching the neutral on/off instead of the 'hot' lead. If it's 240VAC, doesn't matter, both lines are hot. Breaking either interrupts the circuit, so again, doesn't really matter. I would prefer isolating both legs with a contact on 240 circuits, but some would call that redundant. The ITC-1000F is also available in 240V models, so that may be why the diagram on the unit isn't voltage specific. I used the diagram on the card too, though, to a point. Being a retired electrical engineer, I 'fixed a problem no one else knew existed with methods they don't understand'. Actually, I just used the relay to power a heating element and a fan separately, again, planning ahead for modifications.
You'll note the diagram on the unit doesn't designate any particular polarity. That's because the relay outputs can be wired with a completely different voltage source, and the units come in a variety of control voltage configurations. I used the outputs from the controller to drive external ice cube relays with more contacts so I could do more things with it later. I'm considering using 24VDC relays so that I don't have to worry about getting bitten inside the box if I have to troubleshoot, as well as just taking those outputs to a small PLC that I have to do some other things as well.