[R-390] Coming: Real In-rush Protection / Step Start

David Wise David_Wise at Phoenix.com
Mon Apr 2 16:20:00 EDT 2012


I love the low-stress way the dial comes up.  No buzz.
And the room lights don't dip anymore.

You could use a variety of coil voltages, including DC,
but 120VAC is the simplest to wire up.

Arbitrarily setting a price ceiling of $10,
I found six interesting part numbers at Mouser.

The cheapest was the Magnecraft 9AS1A52-120 at $5.
Only 12 left, but there are plenty of the others:

Omron LY1F-AC110/120
Omron LY2F-AC110/120
Omron G2R-1-T-AC120
Omron G2R-1A-T-AC120
Omron G7L-2A-TUBJ-CB-AC100/120

All of these have a mounting flange on top.

I will probably not be doing this, but if you can benefit
from my research, great.

Dave Wise


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