Current Transformers

TK30A Series Toroidal Current Transformer

Primary Current (A)

Secondary Current (A)

Accuracy Class

Burden (VA)

Choose primary current, secondary current, accuracy class, burden to see the product code.

Product overview

The VTEKE TK30A Series is designed for 30 mm busbar applications requiring enhanced measurement performance. Compared with the standard TK30 Series, it provides higher accuracy and rated burden (VA) options, making it suitable for applications with more demanding metering and measurement requirements.

Designed to convert high primary currents into standardized current values suitable for electrical measuring, metering and monitoring devices in low-voltage installations.

Key features

High-accuracy window-type current transformer
Primary current range: 25–600 A
Busbar capacity: 30 × 10 mm
Round conductor: Ø26 mm
Designed for demanding measurement applications
Various mounting options
Sealable terminal cover

Specifications

Electrical characteristics

Electrical characteristics
Rated Power	Up to 30 VA
Accuracy Class	Class 1, 0.5, 0.5S, 0.2, 0.2S, 0.1
Test Voltage	3 kV for 1 min
Surge Current Limitation Factor	FS 5

Mechanical characteristics

Mechanical characteristics
Terminal	Integral terminal cover, high cross-section brass terminal for extra safety
Case	Non-flammable, self-extinguishing ABS/PC
Mounting	Various mounting options

Environmental characteristics

Environmental characteristics
Ambient Temperature (Operation)	-25 °C to +85 °C
Protection Class / IP Rating	IP20

Specific technical characteristics of current sensors

Specific technical characteristics of current sensors
Max. System Voltage	0.72 kV
Primary Conductor	30 × 10 mm
Round Conductor	Ø 26 mm
Number of Inputs	1

Current measurement circuit

Current measurement circuit
Primary Current Range	25 A to 600 A
Secondary Current	5 A
Thermal Rated Short-Time Current	Ith = 60 × In
Thermal Rated Continuous Current	Id = 1 × In
Rated Frequency	50/60 Hz