What is the difference between a 9050JCK timer with a power trigger and a standard timer?

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Difference between power trigger and a standard timer on a 9050JCK

Issue:
What is the difference between a 9050JCK timer with a power trigger and a standard timer?

Product Line:
Relays and Timers

Environment:
9050 Square D Type JCK Plug-in Timers

Resolution:
The power trigger device requires voltage through an initiating contact whereas a standard device requires a dry contact closure (no voltage) through the initiating contact.