Issue:
Difference between trigger action and non-trigger action pushbuttons.

Product Line:
Harmony XB4/XB5 Push Buttons

Environment:
Push Buttons and Operator Interface

Resolution:
Trigger action pushbuttons are impossible to partially engage the contacts.  The trigger action causes the operator to snap over from one state to the other once engaged past a point of no return.  For safety applications and emergency off/stop applications, this is the preferred method.  In general, trigger actuated pushbuttons are 5mm longer than the non-trigger action counterparts. PDF copy of original letter sent to customer base attached.

Released for:Schneider Electric USA