Sensata | Gigavac’s G81 series high voltage relays provide engineers with three distinct contact configurations within a common relay platform, making it easier to select the right switching solution for a wide range of industrial and high voltage applications. The G81 series combines flexible contact arrangements with a compact, sealed construction and proven performance.

The G81A has a Single Pole Single Throw Normally Open (SPST-NO) configuration for standard switching functions, while the G81B has a Single Pole Single Throw Normally Closed (SPST-NC) configuration for applications requiring a closed circuit in the de-energized state. Both models are available in PCB and panel mount versions and feature tungsten contacts that help improve hot load switching performance. For applications requiring additional circuit flexibility, the G81C incorporates a Single Pole Double Throw (SPDT) configuration, enabling alternate power routing and source selection. The G81C is commonly used in semiconductor processing equipment, including wafer and chamber cleaning systems.

The G81 series simplifies component selection while providing a versatile solution for industrial automation, medical equipment, semiconductor processing, telecommunications equipment, test and measurement systems, and other high voltage switching applications.