Applications for these relays include tap or load selection, transmission, safe grounding, and short circuiting. In addition, they can be used for any low or high power application that requires more. These devices can be used in air, in oil at twice their rated voltage, or in other edge media, and are designed to mount with the base facing downward. They can also be used in other locations if specified. Other HV ratings and multiple HV relays (e.g. ET series) are also available.