Electronic systems protection via advanced surge protective devices

Market demand and manufacturer innovations have led to improved surge protective device (SPD) design and features. New fusing techniques and advancements in metal oxide varistors (MOVs) provide a more comprehensive design, which results in a safer and more reliable SPD that improves overall system integrity. Adding new integral thermal protection in series with individually fused MOVs provides protection against low fault current (high impedance fault), while preserving high surge current protection. When applied using IEEE's recommended cascaded approach for coordinated, facility-wide protection, integrated SPDs offer the best solution for a safe and reliable surge suppression system.