- This is a single piece AC current transformer with a 20 mm diameter designed for indoor use. It is intended for mounting in a current meter and uses an open type construction for easy installation. - Electrical characteristics: rated current capacity up to 5 A at 50 Hz. It is applicable to a 3-phase system with an AC current range of 0 to 50 A. - Signaling and outputs: supports 4-20 mA and 12 V DC signal ranges, enabling integration with current meters and compatible instrumentation. - Form factor and performance: the 20 mm diameter offers a compact profile while still handling significant current loads. The open type design provides flexible installation and straightforward wiring connections in various electrical setups. - Compatibility and purpose: specifically designed to work with current meters, accurately transforming the primary current into a usable measurement signal and appropriate output within the 4-20 mA and 12 V DC ranges. - Material and construction notes: the description specifies an open type and 20 mm diameter; material details are not provided but the form supports easy installation in indoor meter configurations. - Use scenario 1: in a building’s electrical panel, install a CT around a feeder conductor and connect the 4-20 mA output to a PLC or SCADA system for remote current monitoring of a 3-phase load. - Use scenario 2: in an industrial control cabinet, place the CT in an open housing to monitor motor currents up to 50 A across three phases, feeding either a 4-20 mA loop or a 12 V DC input for display or recording instrumentation. - Use scenario 3: in retrofit projects with space constraints, the compact 20 mm diameter and open type construction allow easy mounting in current meters to convert AC current to standard measurement signals for existing meters and controllers.