Lochinvar & A.O. Smith 100112696 High Ambient Limit Switch

The Lochinvar & A.O. Smith 100112696 High Ambient Limit is a safety control component used to monitor and limit excessive ambient temperature conditions in HVAC systems. It is designed to operate within control circuits that typically run on low-voltage signals and is calibrated to respond when surrounding temperatures exceed preset safety thresholds. It is installed in water heating equipment assemblies where thermal protection is required to prevent overheating and system shutdowns. The component forms part of the safety interlock system, helping maintain controlled operation and protecting internal components during high-temperature conditions.