Clamp On Current Transformers

Providing with quality and standard customer-made electronic and passive components clamp on current transformers and solution products, Fullstar Electronics is a leading clamp on current transformers manufacturer and supplier in China. welcome to wholesale electronics clamp on current transformers from our factory.

Clamp On Current Transformers, also known as split-core or openable current transformers, are precision electrical sensing devices designed for non-contact AC current measurement without the need to disconnect the circuit. Their core advantage lies in the ability to quickly clamp onto conductors, enabling safe, efficient, and high-precision current signal acquisition. They are widely used in power monitoring, energy management, industrial automation, and smart metering.

Core Structure and Working Principle

This product adopts an openable magnetic circuit structure, composed of a high-precision iron core and a secondary winding. When a conductor passes through the clamp jaw, the AC current in the conductor generates an alternating magnetic field in the iron core. The secondary winding induces a proportional small current or voltage signal for the back-end meter or data acquisition system. This design eliminates the cumbersome operation of traditional transformers that need to be connected in series into the circuit, greatly improving the efficiency and safety of on-site deployment.

Key Product Features

• Split-Core Design, Easy Installation: No need to break the main circuit; simply clamp the conductor into the jaw to complete the measurement. It is especially suitable for retrofits and inspections of existing wiring systems.
• High Precision and Linearity: Utilizing high-quality permalloy or silicon steel sheet cores combined with precision winding processes ensures excellent linear output and low phase error over a wide measuring range.
• Strong Anti-Interference Capability: Built-in shielding structure effectively suppresses external magnetic field interference, ensuring measurement stability in complex electromagnetic environments.
• Multiple Specifications Available: Supports various aperture sizes (e.g., φ36mm, φ50mm, etc.) and current ratios (e.g., 600A/5A, 1000A/5A, etc.) to meet different cable diameters and load requirements.
• Safe and Reliable: Fully enclosed housing design with good insulation performance and mechanical protection rating, complying with international safety standards such as IEC and CE.

Typical Application Scenarios

• Smart Grids and Energy Management Systems: Used for real-time current monitoring in distribution cabinets and meter boxes.
• Industrial Equipment Condition Monitoring: Conducting operating current analysis on motors, inverters, UPS, and other equipment.
• Building Energy Audits: Enabling sub-metering and energy-saving optimization when paired with data loggers.
• Scientific Research and Teaching Experiments: Serving as a standard current sensor in laboratories for power system simulation and testing.

Selection Guide and Technical Parameter Reference

When selecting Clamp On Current Transformers, it is recommended to focus on the following key parameters:

• Rated Primary Current: Choose an appropriate range based on the actual load current to avoid overload or accuracy degradation.
• Secondary Output Type: Common outputs include 5A, 1A, 333mV, and 4-20mA, which need to match the input interface of the back-end instrument.
• Accuracy Class: Generally classified as Class 0.5 or Class 1. For high-precision applications, Class 0.5 or higher is recommended.
• Operating Frequency Range: Standard models are suitable for 50Hz/60Hz power frequencies, with some models extendable to 400Hz or even higher.
• Ambient Temperature and Humidity: Ensure the product can adapt to on-site conditions, such as high temperature, high humidity, or outdoor installation.

Why Choose Our Clamp On Current Transformers?

The products we provide not only meet basic measurement needs but also emphasize long-term stability, customization services, and global compliance. All products undergo strict aging tests and calibration to ensure出厂 consistency (consistency upon leaving the factory). We also support OEM/ODM customization, including special apertures, output signals, housing colors, etc., helping customers build differentiated solutions.

Whether for new projects or legacy system upgrades, Clamp On Current Transformers are an ideal choice for improving measurement efficiency and ensuring system safety. Contact us now to get exclusive technical solutions and sample support!

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