Product Category


HACT Type Split Core current transformer

  • Rated Input: 300A-600A
  • Bobbin: PA66
  • Frequency: 50/60Hz
  • Core: Silicon steel
  • Rated Output:40mA,50mA,60mA,100mA,0.333V

Current Transformer CT HYCT Type


Current Transformer CT is an electrical device designed for measuring current without direct handling of high currents. It operates on the principle of electromagnetic induction, converting high currents into proportionally smaller secondary currents. This essential component finds widespread use in power systems to provide accurate current measurements and protect devices from overloads and short circuits.

The primary components of a CT include the primary winding (main coil) and the secondary winding. The primary winding is wrapped around the conductor through which the current flows, while the secondary winding is connected to the measuring equipment. As current passes through the primary winding, it induces a proportionate secondary current in the secondary winding, typically a fraction of the primary current.


  • Accuracy:Delivers high-precision current measurements, ensuring reliability in monitoring systems.
  • Safety:Conducts measurements non-intrusively, enhancing safety by avoiding direct handling of high currents.
  • Reliability:Simple and stable in structure, adaptable to various environmental conditions.


  • Current Measurement:Provides accurate current signals for monitoring current levels in power systems.
  • Current Protection:Detects abnormal currents, triggering protective devices to prevent equipment overload or failure.
  • Energy Metering:Measures current and calculates energy consumption, crucial for energy billing and management.
  • Instrumentation:Supplies the necessary current signals for instruments and measurement devices.
  • Relay Protection:Initiates relay actions in the event of system faults, safeguarding the power system.

The Current Transformer CT plays an irreplaceable role in ensuring the accuracy of current measurements, the safety of power systems, and the protection of equipment. Its flexibility and reliability make it a critical component in the power industry.

Electrical Parameter Mechanical Parameter
Frequency 50/60Hz Case PC/UL94-V0
Rated Input 300A-600A Bobbin PA66
Measuring range 5%In-120%In Core Silicon steel
Rated Output 40mA,50mA,60mA,100mA,0.333V Construction Screw
Ratio Voltage 0.72KV (AC) Operating Temp -25℃~+75℃
Dielectric strength 3.0KV/1mA/1min Operating Humidity ≤85%
Insulation Resistance DC500V/100MΩ min Output Connection Terminal
Current Ratio 300A/100mA 400A/40mA 500A/50mA 600A/60mA 300~600/0.333V
Primary Current(A) 300A 400A 400A 600A 300A~600a
Max. Current(A) 360 480 600 720 720
Secondary Current(mA) 100mA 40mA 50mA 60mA 0.333V
Load Resistance(Ω) 50Ω 50Ω 50Ω 50Ω /
Class 0.5/1.0 0.5/1.0 0.5/1.0 0.5/1.0 0.5/1.0
Turns Ratio 125.0006944 10000:1 10000:1 10000:1 /
Protection Level 7.5V0-P 7.5V0-P 7.5V0-P 7.5V0-P
Insullation Category CATⅢ
Operating Condition -20℃~+50℃,≤85%RH,No condensation,IN-house&Any direction installable
Storage Condition -30℃~+50℃,≤85%RH,No condensation



HACT Type Split Core current transformer-heyi

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