Weil McLain 510 312 250 Limit Switch Els PW 29614 This component is essential for This component is essential for technicians maintaining Johnson Controls temperature sensors in pressurized vessels where standard immersion wells are not applicable The robust construction and compact form factor allow for seamless integration into tight control assemblies where temperature actuated switching is mandatory this control simplifies field service by maintaining the original footprint and electrical terminal configurations ensuring the burner circuit interrupts when water temperature hits the high limit setpoint to prevent boiler overheating