Surge Protection Devices

A surge protective device is designed to protect electrical equipment or installations from voltage spikes by blocking unwanted voltages above a safe threshold. Typical applications include AC power distribution, drive line filtering, and control panel protection. Hardwired surge protective devices (SPDs) detect and limit transient voltages and power surges that can damage equipment connected to power and signal lines. They are used in industrial, commercial, and residential applications such as power distribution, lighting circuits, appliances, and motor controllers.