Electric Heaters

[oldmansax]

Chuck,
That's a thermal limit. It trips if the unit becomes over heated as in if the fan failed or the grills were stopped up & there was no air flow. There should be a number stamped on it somewhere that tells the limit trip temperature. It would just be a number like "220" or "155". Once in a blue moon it will actually have an "F" behind it. It's usually VERY small (for me, anyway! ) as in get out the magnifying glass.

Remove the limit & take it to an HVAC supply house. They should have a replacement. It doesn't have to be the right brand, as long as the limit temp matches. There are lots of companies that make them & the basic mounting and electrical connections are the same.

TOM