MARS 39004 SPDT Changeover Switch

The MARS 39004 SPDT Changeover Switch functions as a high-quality single-pole double-throw equipment that provides dependable control for HVAC systems. This switch functions between 120/240V power and belongs to the 390 series for automatic electrical load switching between circuits. This switch operates in HVAC system applications including heat pumps, furnaces, air conditioning systems, and refrigeration units to enable smooth heating and cooling function control. The changeover feature of this equipment enables reliable operation between different circuits which results in improved system efficiency and performance. This possesses durability features to operate extensively across the settings. The controller simplifies the task of load-switching applications, which improves energy utilization, extends the longevity of system components, and delivers optimal overall performance.