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The 3KP220A is a high-energy unidirectional transient voltage suppressor designed to protect 220V DC power rails from severe overvoltage events. Rated at 3000W peak pulse power with a 10/1000µs waveform, it delivers excellent clamping capability, low dynamic resistance, and fast response to suppress lightning-induced surges and inductive load switching transients. The DO-201 axial package ensures high surge current handling for industrial power supplies, energy systems, and automation equipment.