Frequent tripping is usually a symptom of airflow restriction

it breaks the electrical circuit to the gas valve if the plenum temperature exceeds the 260°F threshold

the "/U" suffix simply designates a "universal" or trade-packaged version of the same technical component

For peak performance and to prevent premature winding failure

making it suitable for Class 1

TE Connectivity KUP-11A55-120 Relay 326058-757 Frequent tripping is usually aThe TE Connectivity KUP 11A55 120 is a heavy duty DPDT (2 Form C) general purpose plug in relay designed for reliable switching in HVACR control circuits and industrial automation. Operating on a 120VAC coil, this 10 amp panel mount relay features a rugged clear plastic enclosure that protects internal contacts from environmental contaminants while allowing for visual status inspection. The bracket mount case and . 187" quick connect terminals (which