RCMP20HC4-03

Current Sensors Overview

The RCMP20HC4-03 is a unidirectional residual current monitoring module from the RCMP20-03 series, designed for AC/DC sensitive ground fault detection. It operates on a 4.75V to 5.25V supply voltage and detects currents ranging from 6mA to 56mA. The device features a 10-second response time and supports frequencies of 50Hz to 60Hz. It functions within an operating temperature range of -40°C to 105°C and offers 3000A surge current tolerance.

Current Sensors Feature Summary

• Monitors ground fault, residual, or leakage currents in single-phase and multi-phase systems
• Detects both AC and DC residual currents to mitigate electric shock risks during EV charging
• Provides a 'fault' signal output for system integration
• Capable of withstanding high surge currents up to 3000A

Current Sensors Applications

• Residential, commercial, and industrial EV charging stations
• Mode 3 Electric Vehicle Supply Equipment (EVSE)
• Ground fault protection systems compliant with UL2231 standards
• Residual current monitoring per IEC 62955 requirements

Current Sensors Procurement Notes

Verify that the specific suffix HC4 corresponds to the required configuration, as ordering suffixes may define functional variations. Confirm compatibility with your PCB layout and thermal management needs given the board-mount package. Ensure the selected variant meets the specific regulatory standards required for your target market, such as UL or IEC certifications for EV infrastructure.

Current Sensors Selection Notes

Select this module when integrating RCM functionality into OEM EVSE designs requiring detection of both AC and DC leakage currents. It is suitable for systems operating at 50Hz or 60Hz where a 10-second response time is acceptable. Consider the wide operating temperature range for harsh environments and the need for external testing capabilities if mandated by local safety codes.

Current Sensors Part Context

This component belongs to the RCMP20-03 series manufactured by Western Automation Research and Development, now part of Littelfuse. The series specializes in reducing electric shock risks during AC and DC electric vehicle charging. These modules are designed for direct integration onto printed circuit boards, providing essential safety monitoring for modern EV charging infrastructure.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.