Current transformer CTR-30 250/5 CL.0,5 004805509

Current transformer for control and measurement systems

The CTR-30 250/5 CL.0,5 current transformer is a reliable and precise device used in control and measurement systems, network parameter analyzers, and automatic power factor correction (PFC) systems. It allows for safe measurement of high currents using meters with smaller ranges, while also providing galvanic isolation of the circuit being measured.

Design and application

A through-type transformer with a 30.5 mm diameter aperture, designed to work with circuits with a primary current of 250 A. The 250/5 ratio means that a secondary signal of 5 A is obtained at the output, proportional to the current flowing in the primary circuit. This makes it possible to use standard meters to monitor large loads. Accuracy class 0.5 guarantees precise measurements, which is crucial in applications requiring high data reliability.

Advantages and benefits

• Safety: Provides galvanic isolation of the measuring circuit from the main current path, minimizing the risk of electric shock and equipment damage.
• Versatility: Possibility of direct mounting on the current rail or mounting plate thanks to the included brackets facilitates installation in various configurations.
• Universality: Connection terminals with a cover (IP20) and universal connection ensure easy and safe cable mounting.
• Durability: The housing made of polycarbonate with fiberglass (flame retardancy UL 94V-0) provides mechanical strength and resistance to external factors.
• High quality: Product from the renowned manufacturer ETI, guaranteeing reliability and measurement accuracy.
• Power and accuracy: The rated secondary apparent power is 5 VA, and the accuracy class is 0.5 – ideal parameters for demanding measurement applications.

Additionally, the set includes: cable bracket with clamping screw, current rail bracket with clamping screw, and mounting brackets for mounting on a plate. An adapter for mounting on a TH rail is available as an option.