AP 100 B420L

Current Sensors Overview

The LEM AP 100 B420L is a split-core AC current transducer from the AP-B420L series, designed for panel and DIN rail mounting. It features an 18mm bore and supports primary currents of 50A, 75A, or 100A via selectable range settings. The device operates on a 12V to 24V DC supply voltage with a response time of 150ms. Secondary output options include 20mA, 4-20mA, 0-5V, and 0-10V signals. It functions within a frequency range of 30Hz to 2000Hz and withstands operating temperatures between -20°C and 60°C. The unit weighs 90g and utilizes spring terminals.

Current Sensors Feature Summary

• Split-core design facilitates easy installation and retrofitting without disconnecting conductors
• Selectable measuring range allows configuration for 50A, 75A, or 100A primary currents
• Versatile output signal options including current and voltage modes
• Supports both panel chassis and DIN rail mounting configurations

Current Sensors Applications

• Industrial automation systems requiring AC current monitoring
• Power quality analysis and energy management equipment
• Retrofitting existing electrical installations for measurement
• Inverter and drive feedback circuits

Current Sensors Procurement Notes

Verify the specific secondary output configuration required, as the AP-B420L series offers multiple variants for current and voltage outputs. Confirm the selected primary current rating matches the application needs, noting that the range is user-selectable. Ensure the mounting environment accommodates the specified temperature limits and that the power supply aligns with the 12V to 24V DC requirement. Check for compliance with UL 94-V0 and IEC 61010-1 standards if necessary for your region.

Current Sensors Selection Notes

Choose this model when a split-core solution is needed for non-intrusive AC current measurement in industrial settings. The selectable primary range provides flexibility for varying load conditions without changing hardware. Consider the available output types to ensure compatibility with downstream PLCs or data acquisition systems. The compact weight and dual mounting options simplify integration into control panels or DIN-rail enclosures.

Current Sensors Part Context

This component belongs to the LEM AP-B420L series of multi-range AC current transducers. The series includes other ratings such as AP 50 B420L, AP 200 B420L, and AP 400 B420L, sharing similar form factors and operational principles. The APR series represents a related DIN-mount variant optimized for inverter applications. These devices are engineered for high accuracy and reliability in demanding electrical environments.

Current Sensors Replacement Considerations

Direct substitutes within the same family include AP 50 B420L, AP 200 B420L, and AP 400 B420L for different current ranges. For inverter-specific applications, the APR 100 B420L may be considered. Verify that any replacement maintains the required output signal type and mounting style.