AKH0.66K Split Core Current Transformer This split core current transformer delivers reliable, high-precision current sensing in a compact form factor. Designed for easy Retrofit onto existing installations, it provides a 40 A to 20 mA ratio with class 0.5 accuracy, making it suitable for accurate monitoring and metering in a range of electrical systems. The 10 mm diameter footprint keeps it unobtrusive in tight panels and enclosures, while the split-core design allows installation around a conductor without disconnecting it. Key benefits - Accurate and reliable measurement - Class 0.5 accuracy for precise current sensing - Current ratio: 40 A primary to 20 mA secondary for compatible signaling to metering and monitoring equipment - Compact and unobtrusive - 10 mm diameter footprint, ideal for crowded panels and small enclosures - Easy installation - Split-core construction enables mounting around an existing conductor without disconnecting wires - Quick integration with standard measurement and data acquisition inputs that accept a 20 mA secondary signal - Durable and suitable for electrical environments - Robust construction designed to perform reliably in typical electrical installations - Verified series and compatibility - Part of the AKH0.66K series, ensuring consistency with other AKH0.66K components and compatible instrumentation Applications and use scenarios - Electrical panel monitoring - Install around branch conductors in motor control centers or switchgear to monitor current draw and support overload protection and energy usage reporting without interrupting service - Renewable energy and power systems - Use with inverters, charge controllers, or energy meters to monitor AC output and track load/production with standard 20 mA signaling - Maintenance and testing - Temporary or long-term current measurement in service ramps, labs, or field tests by clipping around a conductor without wiring changes or downtime Specifications at a glance - Series: AKH0.66K - Accuracy: Class 0.5 - Conductor hole diameter: 10 mm - Current ratio: 40 A / 20 mA - Core design: Split core - Installation: Allows mounting around a conductor without disconnecting it This product provides a practical balance of accuracy, size, and installation ease, making it a dependable choice for precise current measurement in a variety of commercial, industrial, and test environments.