3-Phase Current Transformer
The Model 276B3 3-Phase Current Transformer, SKU 276B3-300, provides precise current monitoring for industrial applications. Its operational range spans 50-1200 amps, accommodating diverse load requirements. The unit maintains functionality across a 25-400Hz frequency spectrum. With UL Recognized and CSA Certified approvals, this component adheres to rigorous safety and performance benchmarks. Accuracy is specified at ±1% at 60Hz for currents exceeding 100 amps, ensuring reliable data acquisition for system management. Featuring #8-32 brass stud secondary terminals, the design supports secure and consistent electrical connections. This transformer is engineered for seamless integration into systems demanding accurate three-phase current measurement. Its 1.63 inch window diameter facilitates installation in various setups. The 300:5 ratio and 20 VA maximum for 1% accuracy further define its utility in critical monitoring tasks, contributing to operational efficiency and system integrity across multiple industrial sectors.
Cur Transf 3Ph 300:5
Specifications
| Phase | 3-Phase |
|---|---|
| Current Monitoring Range | 50-1200 amps |
| Frequency Range | 25 - 400Hz |
| Secondary Terminals | #8-32 brass stud |
| Approval | UL Recognized |
| Approval | CSA Certified |
| Accuracy (50-100 amp CTs) | ±2% at 60Hz |
| Accuracy (>100 amp CTs) | ±1% at 60Hz |
| Window Diameter | 1.63 in |
| Ratio | 300:5 |
| Max VA for 1% accuracy | 20 |
| Secondary Winding Resistance at 167° F | .0919 |





