The SCTK681B series split-core current transformer features a removable core and internal precision load resistor, specifically designed for current measurement and electrical equipment, ensuring high precision, low core loss, and easy installation. The product features a robust and reliable structure and supports non-contact measurement and live-line operation. It is suitable for current measurement, motor monitoring, and relay protection. It is an ideal choice for split-core current transformer applications in power monitoring and industrial automation.
Features
- Measuring range – 5 to 630A
- Output – 0 to 500mA
- Output – 0 to 0.333V
- High precision, low core loss
- Removable core
- Compact size, lightweight
- Split-core design for easy installation
- Supports live-line operation
Applications
- Electrical line and equipment current measurement
- Motor current and power measurement
- Lighting systems
- Air compressors
- HVAC systems
- Current, power, and energy monitoring devices
- Relay protection devices
- Industrial automation
Mechanical Parameter
| Case |
PA /UL94-V0 |
| Bobbin |
PBT |
| Core |
Permalloy |
| Internal structure |
Epoxy |
| Construction |
Tie |
| Operating Temp |
－25℃～＋75℃ |
| Operating Humidity |
≤85% |
| Output Connection |
UL1015 20AWG Wire(twinsted wire) 2.5m |
Electrical Parameter
| Frequency |
50Hz-2KHz |
| Rated Input |
5A-630A |
| Measuring range |
10%In-130%In |
| Rated Output |
0.333V(AC) or 0-500mA |
| Ratio |
≤± 1.0% |
| Phase angle |
≤ ±60min |
| Dielectric strength |
2.5KV/1mA/1min |
| Insulation Resistance |
DC500V/100MΩmin |
Type selection
| P/N |
Rated Input
(A)
|
Output (mA/V) |
Accuracy |
Dimensions(mm) |
|
|
|
|
Ø0 |
A |
B |
C |
| SCTK681B-010 |
5-75A
(5,10,20,50,75)
|
0-50mA
0.333V
|
0.5,1.0,3.0 |
10 |
41.5 |
30 |
26.5 |
| SCTK681B-016 |
5-150A
(5,10,50,100,150)
|
0-100mA
0.333V
|
0.5,1.0,3.0 |
16 |
53 |
36 |
30.5 |
| SCTK681B-024 |
10-250A
(10,50,100,200,250)
|
0-200mA
0.333V
|
0.5,1.0,3.0 |
24 |
70 |
51.5 |
39.0 |
| SCTK681B-035 |
10-630A
(20,100,250,400,600)
|
0-500mA
0.333V
|
0.5,1.0,3.0 |
35 |
84 |
65 |
41.0 |
Notes: Product specifications can be customized
FAQ
Q: How to apply for samples? What is the lead time?
A: You can submit a sample application through our website or email. Samples are free of charge and will be shipped within 3-5 working days. Mass order lead time is generally 2-8 weeks; custom products will be confirmed separately.
Q: Do you support small trial orders?
A: Yes. Small trial orders (below the standard MOQ) can be negotiated and receive the same quality standards and delivery commitments as mass orders. Please contact our sales team for details.
Q: What is the significance of the split-core design for current measurement applications?
A: The split-core design allows non-contact measurement and can be installed without disconnecting the primary conductor. It supports live-line operation without affecting the customer's normal use. The compact size and lightweight design make installation convenient, suitable for rapid deployment in applications such as electrical lines, motors, and relay protection.
