NewTrend · 45mm circular residual current transformer with selectable output
Product overview
NewTrend CT-Y-45 is a circular through-core residual current transformer with a 45mm aperture and a nominal residual-current input of 1A. Choose a 0-1V or 0-0.5mA full-scale output and accuracy class 0.1, 0.2, 0.5 or 1.0. The screw-fixed housing is used with compatible residual-current monitoring and protection devices.
Technical selection summary
| Model | CT-Y-45 |
|---|---|
| Construction | Circular through-core residual current transformer |
| Through-core aperture | 45mm |
| Nominal residual-current input | In = 1A; nominal input span 0-1A |
| Full-scale output options | 0-1V or 0-0.5mA at In |
| Accuracy class options | 0.1 / 0.2 / 0.5 / 1.0 |
| Accuracy-assured residual-current range | 10%-130% In; 0.1-1.3A at In = 1A |
| Overall sensor response range | 10mA-5A |
| Working frequency | 50-400Hz |
| Dielectric strength | 2.5kV / 1mA / 1min |
| Insulation resistance test | DC500V / 1000 MOhm / 1min |
| Operating temperature | -12 to +45°C |
| Ambient humidity | Up to 85% |
| Connection options | Terminal type or 1.5m shielded twisted wire |
| Shell / skeleton | ABS, flame-retardant grade 94-V0 / PBT |
| Core / encapsulation | Nickel steel or nanocrystalline core; epoxy resin casting |
| Original dimensional values | A = 79.5mm; B = 83.5mm; C = 24mm; D = 66.5mm; G = M5 |
| Installation | Screw fixation |
Typical applications
- Residual-current indication and leakage-monitoring systems
- Electrical-fire monitoring with a matching voltage or current signal interface
View or download CT-Y-45 residual current transformer selection datasheet (PDF)
Product reference images and drawings
Original complete profile and terminal view
Match the selected full-scale output and accuracy class to the connected monitoring device. Installation and wiring must be performed by qualified electricians.
