Janitza KUW1/30-75 Split-Core Current Transformer 75/1 A, 18 mm Opening 1503511

Electrical installers and energy auditors use the Janitza KUW1/30-75 in distribution panels to measure current on existing conductors without disconnecting them. The split-core design opens to clamp around a cable up to 18 mm in diameter, converting a primary current of 75 A to a safe 1 A secondary signal for meters and monitoring devices.

Key specifications

• Transformer type: Split-core current transformer
• Primary current: 75 A
• Secondary current: 1 A
• Current ratio: 75/1 A
• Conductor opening diameter: 18 mm
• Accuracy class: Class 1
• Rated burden: 0.5 VA
• Rated frequency: 50/60 Hz
• Maximum operating voltage: 0.72 kV
• Insulation voltage: 3 kV
• Connection type: Screw terminals
• Mounting type: Cable tie / direct mounting
• Housing material: Self-extinguishing polycarbonate
• Operating temperature range: -25°C to +50°C
• Protection class: IP20
• Standards: IEC 61869-2
• Number of phases: Single-phase
• Application: Energy measurement, power monitoring

Why choose it

This transformer simplifies retrofitting energy meters into existing installations. The split-core mechanism eliminates the need to disconnect cables, reducing downtime and installation effort. Its Class 1 accuracy and 0.5 VA burden ensure reliable measurements for billing and sub-metering applications.

Ideal use cases

• Retrofitting energy meters in distribution boards
• Sub-metering for tenant billing or cost allocation
• Power monitoring in industrial control panels
• Building automation and energy management systems

Good to know

The transformer is designed for single-phase measurement and can be secured with cable ties or mounted directly. The self-extinguishing polycarbonate housing provides durability in normal indoor environments (IP20).