Three-phase current transformer, designed for collecting current signals. The secondary current is mA level and must be used in the core threading mode, which is designed strictly in accordance with the standard NSX and NXM MCCB routing dimensions. This series of products has a wide measuring range ,rated primary current range 1A~1000A rated secondary current range: 20mA ~5A,excellent advanced production process. To ensure its accuracy level, reliability and other technical requirements, this series of products meet the requirements of GB 28184-2011, GB/T20840.1.2 and GB14287.2-2014.