I don't have info on the Peco On30 switches, but Peco doesn't identify their switches by number ( derived from the frog angle as US track manufacturers do. With their Ho switches they Identify them by the radius of the diverging route; and again not by the number but by large medium and small.
the tighter the radius of the diverging route is, thew more trouble it is going to be for larger locomotives.
Bill Nelson
the tighter the radius of the diverging route is, thew more trouble it is going to be for larger locomotives.
Bill Nelson