I am afraid unless you know the terminology it will be difficult to explain to whoever you buy from. So You will need to know things like. Contact block, which is where the contacts clip to. Then N/O or N/C contacts, they even do double contacts so you could have N/O on one half & N/C on the other or double N/O & so on. . Selector switches of the correct orientation as , on/off latching or none latching, 1 position 2 position 3 position etc.. When i was contracting i used a company called Nyquist. or RS. Look up control panel supplies. I would say RS are the best but not the cheapest. If you could find a local RS or electrical wholesaler near you , they maybe would help you out.
Steve.
Edited By Steviegtr on 30/03/2021 12:03:41