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

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

ONKA TK8010005309 is a highly precise clip-on current transformer for indirect measurement of sinusoidal alternating current in distribution systems and electrical switchgear. It enables the safe conversion of 1000 A primary current into a standard secondary current of 5 A, 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

• 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 allows safe connection to:

• Meters and ammeters

• Control and monitoring systems

• Protection and measurement circuits

With an accuracy class of 0.5S, it provides stable and accurate data even at partial loads. Its compact size and standard output make it a versatile choice for private, 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, ammeters, and circuit breakers

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