Schneider Electric 120R402 Current Transformer

Schneider Electric's Square D 120R402 current transformer delivers a 4000:5 ratio, converting high primary currents into a standard 5 A secondary signal for metering, protection relays, and energy monitoring in electrical distribution systems. As part of Schneider Electric's line of instrument transformers, the 120R402 is designed for use with large-conductor runs in panels, switchgear, and automation cabinets, providing a reliable, isolated measurement path for monitoring and protective equipment. The 4000 A primary capacity paired with the 5 A secondary enables connection to common metering and protective devices that expect a 5 A input, supporting accurate instantaneous current measurement across nominal service points. Designed for industrial environments requiring robust performance, the 120R402 integrates with Schneider Electric metering and protection electronics, and is a standard catalog reference for systems needing high-ampere current sensing.