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A sensor PCB. It acts as an interface module for a residual current monitoring system. The PCB filters the signals and processes them through its main chip and then sends an output signal to the main system if it detects a fault. It is powered from a 12 V DC supply and provides the necessary electronics to compare the current signal against the rated residual fault threshold (6 mA DC). When the measured residual current exceeds the specified threshold, the PCB drives a “Fault” output signal to indicate that a dangerous leakage/fault condition exists and the supply to the load (i.e. EV charger) should be disconnected. The product cannot be used as a standalone device and is designed for OEM integration.

A Printed Circuit Board Assembly. It forms part of a Residual Current Device (RCD) module. The function of the sensing board is to detect a change in current and signal to the main PCB to activate disconnection when a residual current above the threshold (10 or 30 mA) is detected. It includes passive and active electronic components for signal conditioning, voltage regulation, and control triggering. Made from FR4 substrate and is 1.6 mm thick.

Main printed circuit board for a residual current device module. This board integrates the electronic control circuitry and the mechanically latched trip mechanism used in a Socket-outlet Residual Current Device (SRCD system). It comprises of a solenoid actuator, magnetic assembly, plunger, contact bridge, concentrator components, reset button, springs, and connection interfaces to the sensing PCB and external terminals. The PCB receives the fault signal from a sensing PCB and actuates the trip mechanism through the solenoid, mechanically opening the circuit contacts to disconnect.

Residual current monitor. Intended for the detection of DC Residual currents in Mode 3 EV charging systems. It comprises of a current transformer with 14mm aperture, and a Sensor PCB intended to be mounted directly onto a printed circuit board. It may be used to detect 6mA DC Residual Current in DC, single phase or 3 phase installations. When a Residual Fault Current that exceeds the rated DC level is detected, the Output pin will switch to the fault state within the specified response times. The Output pin will Auto-Reset when the Fault is removed.

RESIDUAL CURRENT DETECTION MODULE CONSISTING OF A SENSOR PRINTED CIRCUIT BOARD ASSEMBLY (PCBA) AND A FOUR-POLE CURRENT TRANSFORMER (CT). BOTH COMPONENTS ARE DESIGNED FOR INTEGRATION WITHIN THE HOUSING OF A RESIDUAL CURRENT CIRCUIT BREAKER. THE PCBA CONNECTS DIRECTLY TO THE CT VIA DEDICATED TERMINALS AND PROVIDES AN ELECTRICAL OUTPUT SIGNAL FOR THE TRIP OR ALARM CIRCUIT. THE MODULE IS IDENTIFIABLE AS BEING PRINCIPALLY FOR USE WITH EQUIPMENT OF HEADING 8536.