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Registered Member #2390
Joined: Sat Sept 26 2009, 02:04PM
Location: Milwaukee Wisconsin
Posts: 381
Yep! That surely is a thermal switch! I have a drawer full of them in my parts bin! When too much current passes through it the bimetallic strip opens it up. It looks like a neon lamp because it is filled with an inert gas to prevent the metals from degrading, oxidizing. Handy little device!
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