19.1mm Split Core Current Transformer

Split Core Current TransformerThe CTS0191 series of split core current transformers are designed for fast and easy installation. The split-core design permits non-contact current measurements through magnetic field induction without requiring that the primary conductor be taken offline and disconnected for CT installation. The CTS products offers exceptionally accurate signal transformation with low phase shift while exposed to harsh environmental operating conditions.
The emphasis on product quality results in consistent product performance from CT to CT with very low failure rates over the very large production volumes of the CTS family of products.
Model Rated Primary Current Options (Ampere) Notes:
CTS0191-xxxx/0.333V 5A, 10A, 20A, 25A, 30A, 40A, 50A, 60A, 75A, 80A, 100A, 120A, 150A, 160A, 200A xxxx” is Rated Primary Current
CTS0191-2000 mA secondary Ratio 1:1956 TVS across secondary
CTS0191-7500 mA secondary Ratio 1:7500 TVS across secondary


  • Input Frequency: 50 to 400 HZ
  • Output: 0.333V @ rated current (Option: mA secondary output available)
  • Accuracy: ±1% from 10% to 130% of rated current
  • Phase Angle: less than 2 degrees at 50% of rated current
  • Linearity: ±1% from 10% to 130% of rated primary current
  • Insulation Voltage 600 Vac
  • Maximum Primary Voltage 5,000Vac (insulated conductor)
  • Operating temperature: -15ºC to +60ºC
  • Construction:
    • Epoxy encapsulated
    • Case: ABS Resin, UL flame retardant rating 94V-0
  • Lead Wires: 0.61m (2 ft.), UL 1015, twisted pair, 0.34mm2 (22AWG)
  • CAT III, 600V Insulated Primary Conductor/ CAT II, 300V Uninsulated Primary Conductor
  • UL Certification (UL file #E466650)
  • RoHS Compliant

Physical Specifications:
Dimension mm (in)
50.8 (2.00) 53.3 (2.10) 17.0 (0.67) 19.1 (0.75) 19.1 (0.75)
Download CTS Data Sheet (pdf 799kb)

Many of our products can be designed and manufactured to meet the specific application requirements. For a no obligation technical evaluation, please provide the specific performance requirements to engineering@tichenassociates.com.