Schneider Electric 2NR-151 Current Transformer

Schneider Electric's Square D 2NR151 Current Transformer is a solid-core CT with a 150:5 A ratio and a 1-1/8 in. (28.6 mm) window, designed for panel-mount metering and connection to AC ammeters. It carries a 600 V insulation class and provides a 5 A secondary output for metering circuits, with flying leads—commonly 16 AWG—for quick, reliable wiring to meters or panels. The device is rated for primary currents up to 150 A and covers a frequency range of 50–400 Hz, making it suitable for standard 50/60 Hz systems as well as certain high-frequency test applications. This general-purpose current transformer is widely used in energy monitoring and load measurement within electrical distribution panels, delivering accurate measurement at rated current with the 150:5 ratio and compatibility with typical meters that accept a 5 A input.