RCD (Residual Current Device)

UKB is a leading manufacturer and supplier of advanced Residual Current Devices (RCDs) and DC leakage detection modules designed specifically for Electric Vehicle (EV) charging applications.

UKB Electronics is a specialized Indian manufacturer of advanced Residual Current Devices (RCDs) and DC leakage detection modules designed specifically for Electric Vehicle (EV) charging applications. As the primary safety component in any EV charger, the RCD provides life-saving protection against electric shock. We provide EVSE manufacturers with a reliable, compliant, and locally-made safety module, enabling them to build world-class chargers that meet the highest international safety standards.

Functionality & Technology Explained

A standard household RCD is insufficient for EV charging, as the vehicle’s electronics can create DC fault currents that “blind” it. Our solution is purpose-built for this challenge. It incorporates technology to reliably detect not only standard AC leakage but also the critical 6mA DC leakage current, as mandated by the IEC 61851 standard. If any dangerous leakage is detected, the module instantly signals the main contactor to cut power, preventing harm.

Key Features & Customisation Options

Compliance: Designed for integration into systems compliant with IEC 61851 (EV Charging Systems) and IEC 62955 (standard for RDC-DDs).
Protection Type: Offers Type B equivalent protection by combining Type A RCD functionality with 6mA DC detection.
Sensitivity: Standard 30mA tripping current for AC faults and a precise 6mA tripping threshold for DC faults.
Form Factor: A compact, board-mountable electronic module designed for easy integration by EVSE manufacturers.
Reliability: Built with high-quality electronic components for long-term reliability and precise tripping characteristics.

Integrated Manufacturing Capabilities

Our expertise in safety-critical electronics is supported by our advanced in-house processes:

PCBA Manufacturing & Assembly: The entire RCD module, including specialized sensing ICs and current transformers, is manufactured on our advanced SMT lines.
Custom Firmware & Calibration: We have the in-house expertise to calibrate each module for precise trip characteristics, ensuring it meets the strict 6mA DC detection threshold.
Functional Safety Testing: Every RCD module undergoes rigorous end-of-line testing using specialized equipment that simulates various fault conditions to guarantee its life-saving function.

markets supported

Applications for EV - RCD (Residual Current Device)

Public AC Charging Stations

Integrated into public chargers in malls, offices, and parking lots to ensure user safety.

Portable EV Chargers (IC-CPDs)

A core part of the safety electronics within the “brick” of a Mode 2 portable charger.

Industrial EV Charging Outlets

Used in specialized power outlets designed for EV charging in commercial and industrial settings.

AC Home Wallbox Chargers

An essential safety component inside every home EV charger.

Understanding the Essentials

Why Choose UKB Electronics?

Safety in EV charging is non-negotiable. Our expertise lies in the design and high-volume manufacturing of these life-saving electronic modules. By sourcing your EV RCDs from UKB, you are integrating a “Make in India” component that is expertly engineered and rigorously tested for reliability. We provide the core safety technology that allows you to build a trusted and compliant EV charging solution.