Ferraz Shawmut A2D45R USNT Surge Arrester Module

Ferraz Shawmut A2D45R USNT Surge Arrester Module is a surge protection device designed to guard electrical systems against transient overvoltages. As part of Ferraz Shawmut’s line of surge arresters, the A2D45R USNT identifies a specific model in the brand’s protection portfolio. A surge arrester module like this is installed to redirect surge currents away from protected equipment, helping to prevent insulation breakdown and equipment damage during voltage spikes caused by lightning, switching operations, or other transient events. The A2D45R USNT designation communicates the precise product version within the Ferraz Shawmut catalog, supporting accurate sourcing and replacement in protection assemblies. This description presents the essential identity and purpose of the device: a Ferraz Shawmut surge arrester module known by the model A2D45R USNT, intended for surge protection in electrical installations.