ONKA current transformer CURRENT TRANSFORMER 250/5A, 30MM, CLASS 0.5S, 2.5VA (TK302505303 / 80011764)

Clip-on measuring transducers for primary rated currents 250 A, secondary current 5 A, rated power 2.5 VA, available in accuracy class 0.5S, ONKA.

The ONKA TK8010005309 is a high-precision clip-on current transformer for the indirect measurement of sinusoidal alternating current in distribution systems and electrical switchgear . It enables the safe conversion of 1000 A primary current to a standard secondary current of 5 A , which is compatible with most measuring and control devices.

Technical data

Basic parameters

• Primary rated current: 1000 A

• Secondary current: 5 A

• Inner diameter / busbar mounting: 80 mm

• Rated power: 15 VA

• Accuracy class: 0.5S - for reliable and accurate measurements

Installation

• Mounting type: Plug-in transformer

• Mounting feet: included in delivery

• Easy installation: Snap-on design, no interruption of the main circuit.

Description

The transformer converts a high primary current (1000 A) into a standard output of 5 A and enables safe connection to:

• Meters and electricity meters

• Control and monitoring systems

• Protection and measuring circuits

With an accuracy class of 0.5S, it delivers stable and accurate data even under partial load. Its compact size and standard output make it a versatile choice for home, commercial, and industrial applications.

Advantages

• Primary current up to 1000 A - suitable for high-current circuits

• Secondary current 5 A - compatible with most measuring devices

• Accuracy class 0.5S - reliable and stable measurements

• Compact size - suitable for tight spaces

• Easy installation - snap-on transformer with mounting feet

Application

• Switchboards in industry and households

• Measurement and monitoring systems for electricity

• Connection of meters, electricity meters and circuit breakers

• Control of electrical loads and monitoring of consumption in high-current circuits