Janitza KUW1/30-100 Split-Core Current Transformer 100/1 A, 18 mm Opening, 1.5 VA, Class 1 1503512

Measuring high currents safely requires a transformer that can be installed without interrupting the circuit. The Janitza KUW1/30-100 split-core current transformer solves this by clamping around an existing cable, converting a 100 A primary current into a standard 1 A secondary signal for meters and relays.

Who is it for

Electricians and panel builders who need to retrofit energy monitoring or protection on existing installations. Its split-core design allows installation on live conductors without disconnection, reducing downtime and risk.

Main features

• Split-core design for easy retrofit installation
• Primary current: 100 A, secondary current: 1 A
• Conductor opening diameter: 18 mm
• Accuracy class 1, rated burden 1.5 VA
• Compact, self-extinguishing polycarbonate housing

Specifications

• Transformer type: split-core current transformer
• Current ratio: 100/1 A
• Max. operating voltage: 720 V AC
• Insulation test voltage: 3 kV AC
• Frequency: 50/60 Hz
• Operating temperature: -5°C to +50°C
• Storage temperature: -25°C to +70°C
• Connection: screw terminals
• Mounting: cable clamp
• Protection class: IP20
• Number of phases: single-phase

Tips

Ensure the conductor fits within the 18 mm opening and that the secondary circuit is never left open while primary current flows. Use appropriate fusing on the secondary side for safety.