Current Transformers
TK40A Series Toroidal Current Transformer
Primary Current (A)
Secondary Current (A)
Accuracy Class
Burden (VA)
Choose primary current, secondary current, accuracy class, burden to see the product code.
Product overview
The VTEKE TK40A Series is designed for 40 mm busbar applications requiring enhanced measurement performance. Compared with the standard TK40 Series, it provides higher accuracy and rated burden (VA) options, making it suitable for more demanding metering and monitoring applications.
Designed to convert high primary currents into standardized current values suitable for electrical measuring, metering and monitoring devices in low-voltage installations.
Key features
- Window-type current transformer
- Primary current range: 100–800 A
- Busbar capacity: 40 × 10 mm
- Round conductor: Ø26 mm
- Designed for enhanced measurement performance
- Multiple mounting options
- Sealable terminal cover
Specifications
Electrical characteristics
| Rated Power | Up to 20 VA |
|---|---|
| Accuracy Class | Class 0.2S, 0.2, 0.5S, 0.5, 1, 3, 5 |
| Surge Current Limitation Factor | FS 5 |
Mechanical characteristics
| Terminal | Integral terminal cover, high cross-section brass terminal for extra safety |
|---|---|
| Case | Non-flammable, self-extinguishing ABS |
| Mounting | KK0001 or KK0002 |
Environmental characteristics
| Protection Class / IP Rating | IP20 |
|---|
Specific technical characteristics of current sensors
| Max. System Voltage | 0.72 kV |
|---|---|
| Primary Conductor | 40 × 10 mm |
| Round Conductor | Ø 26 mm |
Current measurement circuit
| Primary Current Range | 100–800 A |
|---|---|
| Secondary Current | 5 A |
| Thermal Rated Short-Time Current | Ith = 60 × In |
| Thermal Rated Continuous Current | Id = 1.2 × In |
| Rated Frequency | 50/60 Hz |
Standards
| Standards | IEC 60044-1, IEC 61869-2, VDE 0414-1, DIN 57414, BS3938, BS7626, EN 61869-2 |
|---|
Technical documents
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