SURGE PROTECTION FOR SMALL ELECTRONIC DEVICES Protect small electronics from dangerous surges and spikes with Belkin's SurgeCube single-outlet surge protector. All you need to do is plug the surge protector into a power outlet and connect your device to protect it from power surges, lightning strikes, and line power contamination. Built with high-quality circuitry and premium absorbent materials to protect your devices and data, Belkin's SurgeCube is perfect for laptops, basic home appliances and smaller kitchen appliances. PROVIDES PROTECTION AGAINST VOLTAGE SPIKES AND Fluctuations When your electronic devices are connected to Belkin's SurgeCube, they are protected from unexpected power surges caused by short circuits and lightning strikes. The SurgeCube also protects your devices from sudden voltage fluctuations or minor voltage spikes and sags that can cause damage to your devices over time. SURGE PROTECTION FOR UP TO 306 JOULES Designed to withstand up to 306 joules, the surge protector provides your small electronic devices with protection from voltage fluctuations, surges and spikes that can cause damage. The particularly large metal oxide varistors (MOVs) absorb excess energy and release it as heat. A fiberglass protective layer on the metal oxide varistors suppresses or smothers fire should a high overvoltage trigger the metal oxide varistors to ignite. COMPREHENSIVE THREE-WIRE PROTECTION Belkin's SurgeCube provides three-wire protection for your devices. This means that they are protected from overvoltages that can occur between phase, neutral and earth conductors.