Frequently Asked Questions
The 620K is leading edge.
No, that is completely discontinued.
The 620 was a leading edge dimmer, the equivalent is the PDL634L, though depending on the load it may be time to upgrade to a universal (PDL654) or push button (PDL654PB) dimmer.
PDL634L installation sheet attached for reference.
We do not have a direct replacement for that dimmer option.