Phoenix Contact is making improvements of their Phoenix Contact Push- 
In Terminal blocks. There has been a product change in the PTTB 2,5 
series.  The product change affects the current bar,the push button 
and the plastic housing.  This product change has no influence on 
handling, ergonomics or the top view design. Old and new designs 
are in the same shape, compatible and can be mixed.  Due to the 
optimization of the PV-metal, the PTTB 2,5-PE and PTTB 2,5-PV are only 
able to be bridged at the lower level.  This change is planned to be 
implemented in Oct 2015. 

Please contact a Mouser Technical Sales Representative for 
further information.

5-0615-5