for flush design
The dimensions of the mounting cut-outs are shown in the product details
The standard lock Ronis 251
For covering of screw terminal
2 NO for 1st or 2nd switching element
2 NO for 3rd switching element
2 NC for 1st or 2nd switching element
2 NC for 3rd switching element
1 NC + 1 NO for 1st or 2nd switching element
1 NC + 1 NO for 3rd switching element