Description
The Heatcraft Refrigeration FM1STUZ-120U Timer Module is an electromechanical control part used to regulate timed switching of refrigeration loads in HVAC systems. It has a 120V single-pole, double-throw timer with a 21A switching capacity, enabling scheduled control of compressors, fans, pumps, or defrost cycles. It is placed inside refrigeration systems, control panels, and industrial equipment where precise time-based operation is required. It operates as an interrupt for electrical circuits at set intervals, supporting coordinated operation and energy-efficient system cycling in the system.
