Voltage rating is calculated from the flashover voltage – the voltage at which the electricity can break down the air gap and jump between two contacts. With a single contact, the voltage rating you achieve will depend on the space you leave between two contacts, or a contact and any other conducting element. So we are unable to give a voltage rating for single contacts, as it will depend on your usage.

These designs were intended for SMT soldering to a PCB or similar, rather than wire mounting. You could either make a wired connection elsewhere to the PCB, or investigate methods for soldering wires to flat surfaces.

At maximum height, the item has reached the limit of its travel. if any surface is making contact at maximum height, there is no spring force maintaining a positive contact – any tiny amount of movement might cause disconnection from the mating surface. At the maximum working height, the contact is maintaining a good electrical contact to the mating surface with a positive spring force.