Split-core current transformer 400/5A | 1VA | Class 1 | IP20 | ELEQ TQ40-C
Code: 4Q4C62ELEQ TQ40-C – a compact and precise split-core current transformer designed for convenient connection to digital measuring systems. Its construction allows for quick and safe installation around existing insulated conductors without the need to disconnect the load. The high accuracy class (1) ensures reliable kWh measurements, making this model ideal for both professional electricity metering and equipment energy monitoring.
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Technical Specifications
Type: Split-core current transformer
Manufacturer: ELEQ
Model: TQ40-C
Current ratio: 400/5A
Accuracy class: 1 (according to IEC 61869-2, valid from 5% to 120% of nominal current)
Rated burden: 1 VA
Protection class: IP20
Insulation class: E (120 °C)
Rated insulation voltage: 0.72/3/- kV
Frequency: 50/60 Hz
Rated short-time thermal current: 60 × In / 1 s
Continuous thermal current: 100% In
Overvoltage category: CAT IV 600 V
Operating temperature: –10 °C to +55 °C
Relative humidity: 5%–85% (non-condensing)
Mounting conditions: only for insulated primary conductors
Primary aperture diameter: up to Ø 28 mm
Secondary output: 5A, cable 0.5 m, cross-section 1.5 mm²
Mounting: with two included cable ties
Item code: 4Q4C62Features
Accurate measurement: Class 1 accuracy is ideal for energy metering and analytical measurements.
Easy installation: Split-core housing allows mounting without interrupting conductor power supply.
Clear locking: Closing mechanism with a “click” sound ensures reliable closure.
Versatility: Suitable for digital measuring systems and various electrical control devices.
Compact design: Fits in limited installation spaces.
Safety: CAT IV 600 V and IP20 protection, suitable for indoor use with insulated conductors.
Applications
For home users: Can be integrated into home energy monitoring systems to view real-time electricity consumption and optimize usage.
For engineers: An excellent component for energy monitoring projects, load analysis of electrical networks, and diagnostics of industrial systems.
For electricians: Allows quick current measurement installation without power interruption; convenient and safe for use with various conductor diameters (up to Ø 28 mm).
Pros
High measurement accuracy (Class 1)
Quick and easy installation without power disconnection
Reliable locking mechanism with clear “click”
Compact size for limited spaces
Comes with mounting ties
Certified according to IEC 61869-2
Cons
Not suitable for outdoor use due to IP20 protection class
For insulated conductors only – cannot be installed on uninsulated live parts
Maximum primary aperture Ø 28 mm – not suitable for very thick cables
Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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