Surge Protection Devices (SPD)

About Surge Protection Devices (SPD)

Surge Protection Devices (SPDs) clamp transient overvoltages from lightning, switching events, and utility disturbances to protect downstream controls, drives, and instrumentation. The category covers Type 1, Type 2, and Type 3 SPDs in DIN-rail, panel-mount, and receptacle formats, including replaceable-cartridge and SCCR-rated models for UL 1449 compliance.