RCMP20HC3-03

Current Sensors Overview

The RCMP20HC3-03 is a residual current monitor (RCM) manufactured by Western Automation, a Littelfuse company. Designed for electric vehicle supply equipment (EVSE), this component provides ground fault protection during AC and DC charging sessions. It detects leakage currents to mitigate shock hazards in compliance with UL2231 and IEC62955 standards. The device operates on a 12VDC to 24VDC supply and features a 3000A surge current capacity. It includes an external test capability and a 'fault' signal output for integration into OEM control systems.

Current Sensors Feature Summary

• Detects both AC and DC residual currents in EV charging systems
• Provides fault signaling for system safety interlocks
• Supports external testing mechanisms for maintenance verification

Current Sensors Applications

• Mode 3 EV chargers
• OEM Electric Vehicle Supply Equipment (EVSE)
• AC and DC charging stations

Current Sensors Procurement Notes

Verify the specific part number against official Littelfuse or Western Automation documentation to ensure compatibility with your EVSE design. Confirm that the required detection thresholds and surge ratings align with your system's safety requirements. Check for any recent updates to UL2231 or IEC62955 compliance standards relevant to your target market before finalizing procurement.

Current Sensors Selection Notes

Select this component when designing EVSE requiring certified residual current monitoring for both AC and DC faults. Ensure the input voltage range matches your controller's logic levels. Consider the physical footprint and mounting requirements for PCB integration. Validate that the 3000A surge rating meets the prospective short-circuit conditions of your installation.

Current Sensors Part Context

This component belongs to the Western Automation RCM series, specialized for eMobility applications. It addresses critical safety needs in EV infrastructure by monitoring leakage currents that traditional fuses or breakers cannot detect. The product line supports manufacturers in meeting stringent international safety regulations for public and private charging networks.

Current Sensors Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. Cross-reference with other Western Automation RCM variants only if electrical specifications and form factors match exactly. Consult manufacturer guidelines for any obsolescence notices or recommended upgrades.