NEMA SPD NEMA SPD OVRHTPA cost-effective solution designed for UL panel builders and OEMs to help protect against utility power anomalies and lightning-induced transient surge conditions OVRHT3DDependable and effective, OVRHT3D SPDs protect critical power applications from the damaging effects of power surge events. OVRHROVRHR Type 1 Surge Protective Devices protect critical loads from damaging electrical transients and high-energy disturbances. OVRHMSUCompact and powerful, OVRHMSU SPD protects critical loads from damaging electrical transients, high-frequency noise, and high-energy disturbances. TPHE Series SPDService entrance and mid-level distribution. The TPHE is available in 125 to 300 kA per mode. TPME Series SPDMid-level distribution and equipment level protection. The TPHE is available in 65 to 100 kA per mode. Product Selector Publications Application and TechnicalBrochuresCSI Master FormatCatalogs and Buyers GuidesCertificates/Declarations of ConformityData SheetsInstallation and Instruction Related Links Catalog OVRH Surge Protective Devices Leaflet OVRH SPD Quick Step Guide Other Surge Protective Devices DIN Rail SPD Residential Surge Protective Devices Data Line SPDs