AKH0.66KΦ16 120A/40mA Class 0.5 Split Core Current Transformer Key benefits Simple retrofit installation: splitcore design clamps around an existing conductor — no need to disconnect wiring or interrupt service. Accurate metering for electronic instruments: Class 0.5 accuracy ensures reliable measurement for energy monitoring, metering panels and control systems. Compact footprint for tight spaces: Φ16 (16 mm) core window accommodates small conductors and fits into confined enclosures. Direct interface with lowcurrent inputs: 120A primary produces a 40mA secondary output, ideal for modern meters and monitoring devices that accept mA inputs. Product highlights (quick specs) Model: AKH0.66KΦ16 Type: Splitcore current transformer Primary rating: 120 A Secondary output: 40 mA at rated primary current Accuracy class: 0.5 Core window diameter: Φ16 (16 mm) Series: AKH0.66K What this CT does and why it matters This AKH0.66KΦ16 splitcore current transformer converts an AC primary current (up to 120 A) into a proportional 40 mA secondary signal. The Class 0.5 accuracy rating keeps measurement error within industryacceptable limits, providing dependable inputs for energy management systems, submeters, data loggers and protective equipment. Because it is a splitcore design, it allows quick clampon installation without system downtime, which reduces labor and avoids service interruptions during retrofits or upgrades. Compatibility and functionality Works with meters, recorders and control devices designed to accept a 40 mA secondary signal. Designed for mounting in panels, switchgear and junction boxes where conductor access is limited. The Φ16 core aperture accepts conductors up to 16 mm diameter; suitable for singlecore cables or busbars of compatible size. Class 0.5 accuracy ensures consistent readings across its specified range, supporting billinglevel metering and precision monitoring where required. Installation and use Splitcore hinge and latch enable tool installation around live conductors (observe all safety procedures and local regulations when installing on energized lines). Secondary leads connect to the measurement device; ensure secondary circuit is never open while the primary is energized. Compact form factor allows installation in crowded control cabinets and retrofit situations. Applications / Use cases Energy submetering: Integrate into tenant submetering or departmentlevel energy monitoring systems to track consumption with accuracy. Electrical panel retrofits: Clamp onto existing phase or feeder conductors to add monitoring or protection functions without panel rework or downtime. Equipment load monitoring: Provide accurate current feedback to data loggers, PLCs or energy management systems for motors, HVAC units and production machinery. Why choose AKH0.66KΦ16 Minimizes disruption: Splitcore design eliminates the need to break circuits during installation. Precise and reliable: Class 0.5 accuracy combined with a 120A/40mA ratio provides stable signals for modern metering and control equipment. Spaceefficient: Φ16 aperture and compact housing make it suitable for tight enclosures and existing switchgear. Ordering information Model name: AKH0.66KΦ16 Specification summary: Splitcore CT, 120 A primary, 40 mA secondary, Class 0.5, 16 mm core window Safety note Follow established electrical safety procedures and local codes during installation. Never leave the secondary circuit open while the primary is energized.