the Watts 0121514 (also identified as LF174A-1 1/4-75) is a critical ASME Section IV safety component

including the 200 and 210 series

with a factory-set default of 160 degrees

With a robust multi-speed design and reversible rotation

When the inducer motor energizes

Siemens Industrial Controls 3UG5514-1BR20 Monitoring Relay 318518-761 the Watts 0121514 (also identifiedThe Siemens 3UG5514 1BR20 is a high performance digital monitoring relay designed for demanding industrial phase monitoring and line protection applications. This SIRIUS monitoring relay provides precise detection of phase sequence, phase failure, and phase asymmetry within 3 phase networks. Engineered for reliability, it ensures motor protection by monitoring overvoltage and undervoltage conditions, preventing equipment damage due to unstable power