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CR9521-20 is listed in the Current Sensors range at ChipApex. The manufacturer field lists CR Magnetics Inc.. Its product description is SENSOR CURRENT XFMR 20A AC. Review the specifications below when checking this part for your BOM.
Current Sensors specifications for CR9521-20
- Description：SENSOR CURRENT XFMR 20A AC
- Series：CR9500
- Mfr：CR Magnetics Inc.
- Package：Bulk
- For Measuring：AC
- Sensor Type：Transformer w/Conditioning
- Current - Sensing：20A
- Number of Channels：1
- Output：Ratiometric, 0V ~ 5V
- Sensitivity：-
- Frequency：50Hz ~ 400Hz
- Linearity：-
- Accuracy：±0.5%
- Voltage - Supply：Self Powered
- Response Time：100ms (On), 250ms (Off)
- Current - Supply (Max)：-
- Operating Temperature：-30°C ~ 60°C
- Grade：-
- Qualification：-
- Polarization：Bidirectional
- Mounting Type：-
- Package / Case：Module, Single Pass Through
- Supplier Device Package：-
Current Sensors datasheet and documents for CR9521-20
Current Sensors Overview
The CR9521-20 is a self-powered AC current sensor manufactured by CR Magnetics Inc. It utilizes a transformer-based design with a single pass-through configuration and bidirectional module conditioning. The device supports an input range of 0 to 20 AAC and provides an output voltage of 0 to 5 VDC. It operates within a frequency range of 50 to 400 Hz and maintains an accuracy of +/-0.5%. The unit features a solid core construction without mounting requirements and ensures an output load impedance of at least 1M ohms.
Current Sensors Feature Summary
- Self-powered operation utilizing transformer technology for AC current sensing
- Bidirectional measurement capability with integrated conditioning module
- Solid core design eliminating the need for specific mounting hardware
Current Sensors Applications
- AC power monitoring systems requiring bidirectional current tracking
- Industrial equipment with frequency ranges between 50 and 400 Hz
- Power quality analysis devices needing high accuracy measurements
Current Sensors Procurement Notes
Verify that the application environment remains within the specified 50 to 400 Hz frequency range to ensure accurate signal processing. Confirm that the connected circuitry respects the minimum 1M ohm output load requirement to prevent signal degradation. Ensure the system design accommodates the 0 to 5 VDC output level for proper interface compatibility with downstream data acquisition or control units.
Current Sensors Selection Notes
Select this component when bidirectional AC current measurement is required without external power supply constraints. The self-powered nature simplifies integration into existing circuits. Consider the 20A input limit and frequency specifications against the target application's electrical characteristics. The solid core design offers flexibility in installation compared to split-core alternatives.
Current Sensors Part Context
This model belongs to the CR9500 series of current sensors from CR Magnetics Inc. The series focuses on transformer-based solutions for AC applications. The CR9521-20 specifically addresses the need for bidirectional sensing with high accuracy. It complements other models in the lineup that may offer different current ratings or unidirectional capabilities.
Current Sensors Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching the 20A rating, bidirectional functionality, and 50-400 Hz frequency response. Verify interface compatibility before considering alternative components.
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