Hubei Tianrui Electronic Co. Ltd products

TR21 series of residual （zero sequence） current transformers, designed to collect the remaining （zero sequence） current signal and design. Remaining （zero sequence） current is usually mA level, and must be through the way of the core, the balance of characteristics, interference and linearity higher.  This series of products wide measuring range, rated current range: 10mA ~ 5A, rated secondary current range: 0 ~ 5mA, excellent high permeability magnetic core and advanced production process to ensure its accuracy level, reliability, etc. skills requirement.