Why did ZB4BS84430 replace ZB4BS5430?


28 September 2021

Difference between trigger action and non-trigger action pushbuttons.

Product Line:
Harmony XB4/XB5 Push Buttons

Push Buttons and Operator Interface

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.