The SCTK661 series split-core current transformer is designed for current measurement and monitoring in new or existing power distribution networks. The product uses a split-core self-locking structure that allows quick installation without disconnecting or removing cables or busbars. The wide window design accommodates large-diameter cables or busbars. The secondary winding has a built-in precision parallel resistor, providing a safe low-voltage output without the need for external sampling resistors. Multiple mechanical sizes are available with high customisability, adapting to various existing installation conditions. It is widely used for current measurement, monitoring, and protection in power lines and equipment, as well as current and power measurement for motors, lighting, air compressors, and other applications.
| Frequency | 50-60Hz |
|---|---|
| Rated Input | 0.5A-630A |
| Measuring range | 10%In-130%In |
| Rated Output | 0.333V(AC) or 0-500mA |
| Ratio | ≤± 0.1% |
| Phase angle | ≤ ±30min |
| Dielectric strength | 2.5KV/1mA/1min |
| Insulation Resistance | DC500V/100MΩmin |
| Case | PC /UL94-V0 |
|---|---|
| Bobbin | PC |
| Core | Permalloy |
| Internal structure | Epoxy |
| Construction | Tie |
| Operating Temp | -25℃~+75℃ |
| Operating Humidity | ≤85% |
| Output Connection | UL1015 22AWG Wire(twinsted wire) 2.5m |
| P/N | Rated Input (A) | Output (mA/V) | Accuracy | Dimensions(mm/inch) | ||||
|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | ||||
| SCTK661A-008 |
0.5-50A (1,5,10,30,50) |
0-50mA 0.333V |
0.2,0.5,1.0 |
36.0 (1.42) |
22.0 (0.87) |
20.0 (0.79) |
8.0 (0.31) |
2500 (100) |
| SCTK661B-013 |
1-100A (5,10,50,75,100) |
0-100mA 0.333V |
0.2,0.5,1.0 |
45.0 (1.77) |
22.0 (0.87) |
20.0 (0.79) |
13.0 (0.51) |
2500 (100) |
| SCTK661C-019 |
5-250A (10,100,200,250,400) |
0-200mA 0.333V |
0.2,0.5,1.0 |
60.0 (2.36) |
22.0 (0.87) |
20.0 (0.79) |
19.0 (0.75) |
2500 (100) |
| SCTK661D-023 |
5-400A (10,100,200,250,400) |
0-200mA 0.333V |
0.2,0.5,1.0 |
60.0 (2.36) |
22.0 (0.87) |
20.0 (0.79) |
23.0 (0.91) |
2500 (100) |
| SCTK661E-032 |
10-630A (20,100,250,400,600) |
0-500mA 0.333V |
0.2,0.5,1.0 |
76.0 (2.99) |
22.0 (0.87) |
20.0 (0.79) |
32.0 (1.26) |
2500 (100) |
Notes: Product specifications can be customized
Q: Is this product suitable for anti-tampering electricity meters?
A: Yes. The SCTK661 series is suitable for single-phase electricity meters and anti-tampering electricity meters. The built-in precision resistor provides a stable low-voltage output, meeting the accuracy and reliability requirements of anti-tampering electricity meters for current sensing.
Q: How to apply for samples? What is the lead time?
A: You can submit a sample application through our website or email. Please provide your company information and target model (including size requirements). Samples are free of charge and will be shipped within 3-5 working days. Mass order lead time is generally 2-8 weeks.