20 mm diameter open type AC current transformer (single piece) for indoor use Benefits at a glance - Compact 20 mm diameter design fits tight panel spaces and meter housings - Open-type CT for easy installation around existing conductors in indoor electrical panels - 5 A rating provides reliable performance for typical metering and monitoring applications - 50 Hz operation ensures compatibility with standard power systems - Designed for mounting in power meters and similar metering equipment - 3-phase capable design supports measurement in three-phase systems - Wide current range up to AC 0 400a for high-load environments - 0 20MA12VDC output option provides a simple signal path for monitoring circuits Key specifications - Configuration: open-type AC current transformer - Diameter: 20 mm - Number of pieces: 1 - Primary rating: 5 A - Frequency: 50 Hz - Mounting: for indoor use, suitable for power meters - Phase configuration: 3-phase design - Measured current: up to AC 0 400a - Current output / burden: 0 20MA12VDC - Application: indoor current sensing in 3-phase systems and power meters Use scenarios - Power meter installation in an industrial facility: use this CT to monitor per-phase current up to 400 A in a 3-phase system, with a 0 20MA12VDC signal suitable for meter input or data logging. - Indoor electrical panel retrofits: replace or upgrade existing current sensing for compact meters, enabling reliable monitoring in tight spaces without altering wiring significantly. - Laboratory testing and calibration: deploy in test benches to simulate and measure CT response at 50 Hz, supporting calibration of metering equipment or 3-phase current measurements. This current transformer is designed to deliver reliable, safe indoor current sensing for 50 Hz power meters and 3-phase systems, with a compact 20 mm form factor and straightforward integration in indoor electrical installations.