The Pearson Electronics 411 is a wide band current transformer engineered for precise AC current measurement across a broad frequency spectrum. With a 1.0-inch internal diameter, it delivers 0.1 V/A sensitivity and handles peak currents to 5000 A, making it suitable for high-energy transient capture and continuous monitoring applications. The device combines fast rise time, wide frequency response, and minimal insertion impedance into a compact, field-ready form factor.
Technical Specifications
• Sensitivity: 0.1 V/A ±1/−0%
• Output Resistance: 50 Ω
• Maximum Peak Current: 5000 A
• Maximum RMS Current: 50 A
• Usable Rise Time: 20 ns
• Droop Rate: 0.9 %/ms
• Current Time Product: 0.2 A·s maximum (with core-reset bias); 0.06 A·s typical without bias
• Frequency Range: 1 Hz to 20 MHz (−3 dB points)
• I/f Figure: 0.6 peak A/Hz
• Output Connector: BNC (UG-290A/U)
• Internal Diameter: 1.0 in.
• Operating Temperature: 0 to 65 °C
• Weight: 8.3 to 8.5 ounces
– Key Features
• 20 ns rise time enables capture of fast-changing fault currents and switching transients
• 1 Hz low-frequency response supports quasi-DC measurements and low-frequency harmonics
• 20 MHz upper bandwidth accommodates RF and switching-mode power supply analysis
• 50 Ω output impedance matches standard test equipment inputs without matching networks
• Extended current-time product rating (0.2 A·s) available with core-reset bias for high-energy events
– Typical Applications
• Power distribution fault analysis and arc flash studies
• Switching-mode power supply current profiling
• RF and microwave circuit current monitoring
• Transient response measurement in control systems
• High-current pulse characterization
– Compatibility & Integration
Standard BNC output connector integrates directly with oscilloscopes, spectrum analyzers, and digitizers without adapter requirements.
