NZR Clip-On Current Transformer 250/5 A, MID, Class 0.5, 2.5 VA 42121540

Accurate current measurement in existing installations often requires interrupting the circuit to install a traditional transformer. The NZR clip-on current transformer solves this by simply snapping onto the conductor, enabling quick retrofitting without downtime.

Who is it for

Electricians, panel builders, and energy monitoring professionals who need to measure high currents up to 250 A in busbars or cables, especially in retrofit scenarios where circuit interruption is not an option.

Main features

• Clip-on design for easy installation on existing conductors
• Transformation ratio 250 A primary to 5 A secondary
• Accuracy class 0.5 for precise measurements
• MID certified for billing applications
• Rated burden 2.5 VA
• Accepts busbars up to 30 x 10 mm or round conductors up to 21 mm diameter
• Self-extinguishing polycarbonate housing
• Screw terminal connections

Specifications

• Primary current: 250 A
• Secondary current: 5 A
• Accuracy class: 0.5
• Rated burden: 2.5 VA
• Maximum operating voltage: 0.72 kV
• Frequency: 50/60 Hz
• Busbar opening: 30 x 10 mm
• Round conductor opening: Ø 21 mm
• Overcurrent limiting factor: FS5
• Operating temperature: -5°C to +50°C
• Protection class: IP20
• Housing material: Self-extinguishing polycarbonate
• Standards: IEC 61869-2

Tips

Ensure the conductor fits within the opening dimensions and that the transformer is securely clipped. For billing applications, verify that the MID certification meets local regulatory requirements.