Siemens A1-TRC-RON-001 Current Transformer Ratio 1200:5A

Siemens A1-TRC-RON-001 Current Transformer is a high-current sensing device with a ratio of 1200:5 A, stepping down large primary currents to a standard 5 A secondary for connection to metering and protection inputs. In practical terms, 1 A on the secondary corresponds to 240 A on the primary, and 1200 A on the primary yields 5 A on the secondary. This fixed ratio supports measurement and monitoring in electrical distribution and industrial environments by providing a manageable signal for 5 A current inputs. The Siemens designation indicates it is part of Siemens' current transformer offerings and is intended for use with equipment that accepts a 5 A input, such as meters and protective relays. The model number A1-TRC-RON-001 identifies a CT configured for 1200:5 A conversion, for translating high currents into a standard sensing range. When integrated into a distribution or equipment protection scheme, this CT enables monitoring of load currents and coordination with protective devices, helping ensure timely detection of overcurrents and safer operation of electrical systems.