Printed Circuit Board Assembly. It consists of both passive and active components, including: Capacitor, Diode, Resistor, Varistor, Transistor, Power Relay, Current Transformer, Isolation Transformer, Voltage Regulator and Micro-controller. It is designed to be installed into an EV charger assembly. The module provides the full control functions for EV charging, including the control-pilot interface, continuous charging current monitoring, residual current detection with optional EV-plug lock control. When fault conditions occur (residual DC leakage, over-current, control-pilot error), the controller disconnects the supply to the EV and signals status. The unit operates at rated charging currents 16A or 32A, supply range 207–253 VAC at 50 Hz, and includes built-in power supply and relay outputs for contactor or load switching. Operating temperature −25 °C to +50 °C.

GIR 1 & 6. EXPLANATORY NOTE (ii)(14) TO SECTION XVI. THE TEXT TO CODES 8537, 8537 10 & 8537 10 98. THE HSEN TO HEADING 8537.