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CTB Series High-Accuracy Fluxgate Clamp Current Sensor 20–2000 A
The CTB series are clamp-type high-accuracy current sensors that measure DC and AC current simultaneously using fluxgate technology, with typical 0.2% accuracy, good frequency and temperature characteristics and bandwidth up to 1 MHz. They operate from –40 to 85 °C and accept conductors up to 50 mm diameter, with ratings up to 2000 A.
Each rating is available in four power-interface versions: A (powered by the CTB104/CTB104A sensor unit or CTB108 supply), B (12 V adapter), C (12 V LEMO connector) and D (12-pin aviation connector), the last two matching the sensor ports of popular power analyzers.
Models & Specifications
Common Specifications
| Specification | Value |
|---|---|
| Accuracy | DC: ±0.2% rdg. ±0.05% f.s. |
| Output | Voltage output |
| Operating Temperature | –40 to 85 °C |
Current Ratings
| Model | CTB20A/B/C/D | CTB200A/B/C/D | CTB501A/B/C/D | CTB500A/B/C/D |
|---|---|---|---|---|
| Rated Current | 20 A | 200 A | 500 A | 500 A |
| Peak Current | 28 A | 282 A | 707 A | 707 A |
| Bandwidth | DC–1 MHz | DC–600 kHz | DC–500 kHz | DC–100 kHz |
| Jaw Diameter | 20 mm | 20 mm | 20 mm | 50 mm |
| Current Transfer Ratio | 0.1 V/A | 10 mV/A | 4 mV/A | 4 mV/A |
| Model | CTB1000A/B/C/D | CTB2000A/B/C/D |
|---|---|---|
| Rated Current | 1000 A | 2000 A |
| Peak Current | 1414 A | 2000 A |
| Bandwidth | DC–50 kHz | DC–50 kHz |
| Jaw Diameter | 50 mm | 50 mm |
| Current Transfer Ratio | 2 mV/A | 1 mV/A |
Power Interface (model suffix)
| Suffix | Power / Connector |
|---|---|
| CTB***A | Powered from CTB104 / CTB104A sensor unit or CTB108 supply (8-pin) |
| CTB***B | 12 V adapter |
| CTB***C | 12 V via LEMO connector (power analyzer sensor port) |
| CTB***D | 12-pin aviation connector (power analyzer sensor port) |
Specifications from the official Cybertek datasheet (English); use the Download Datasheet button for full details.
