Phoenix Contact PTS 1,5 Series Release Button Change Phoenix Contact is changing original shape of the PTS 1,5 release button. There had been a tendency to pull the release button out of the terminal in order to open it. As a result, the terminal block could no longer be opened. In order to eliminate this problem, the shape of the release button will be changed to a smoother surface. During transition of the changes, both versions of this product may be supplied depending on inventory. Please contact a Mouser Technical Sales Representative for further information. 5-0813-24