SPDT (Single-Pole, Double-Throw) contacts are crucial components within vacuum switches, offering versatile electrical switching capabilities. These contacts enable a single input to connect to one of two outputs, facilitating precise control in pneumatic and vacuum systems. When integrated into a vacuum switch, an SPDT contact allows the system to respond to pressure changes by activating or deactivating a circuit, or by switching between different operational states. This flexibility is essential for automation and safety functions, ensuring reliable performance in industrial applications.