RCMU-Residual Current Monitoring Unit|Aegen EVSE Accessories
RCMU (Residual Current Monitoring Unit) is an electronic device that continuously monitors a circuit for residual current (earth leakage current). Its primary function is to measure and report leakage data, but it does not have the capability to disconnect the circuit itself. It provides critical early warning for insulation faults.
Key Features of RCMU:
1.Continuous Monitoring: Precisely measures AC, DC, or pulsating residual currents in real-time.
2.No Circuit Interruption: Unlike RCDs/RCBOs, it does not trip the circuit but provides alerts or data outputs.
3.Advanced Communication: Transmits data via relays, analog signals (e.g., 0-10V), or digital interfaces (e.g., RS485, CAN bus) to higher-level systems like BMS or EMS.
4.Preventive Safety: Alerts users or systems to insulation faults before they become critical, enabling proactive maintenance.
5.High Accuracy:Detects even low-level leakage currents, ensuring early fault detection.
In electric vehicle charging stations (EVSE), RCMUs are indispensable for:
1.Charging Safety: Monitors leakage current between the vehicle, charger, and grid during charging.
2.Fault Prevention: Detects insulation degradation in cables or connectors, preventing electric shock or fire risks.
3.Operational Continuity: Avoids unnecessary charging interruptions (e.g., from nuisance tripping) while ensuring safety.
4.Compliance with Standards: Helps meet international safety standards (e.g., IEC 62752, IEC 61851) for EV charging infrastructure.
5.Integration with BMS/EMS: Communicates leakage data to the EV’s Battery Management System (BMS) or energy management systems for coordinated action.
AEGEN Company Introduction
AEGEN is headquartered in China and operates as a professional OEM/ODM manufacturer of EV chargers. With 23 years of experience in the electrical industry, the company has also developed deep expertise in EVSE over the past nine years. As a result, it offers a wide range of products including AC electric vehicle chargers and DC EV charging stations. Additionally, AEGEN supplies various AC and DC EV charging accessories to support charging companies globally. The company has successfully established long-term strategic partnerships across multiple regions such as Southeast Asia, Central Asia, the Middle East, Europe, and Hong Kong. Thanks to these strong collaborations, AEGEN has earned a highly positive reputation internationally. Furthermore, its commitment to quality and innovation continues to strengthen these relationships. Ultimately, AEGEN remains a trusted partner for EV charging solutions around the world.
AEGEN Products
Our main products are AC EV charger for home , AC business electric vehicle charger station , DC EV fast charging station , EV charger Tester , AC EV charging accessaries like type B RCCB,type A RCCB,controller ,RCMU and AC contactor , Fast Electric Vehicle charging station accessaries like Charging master control system like CCU,PCU,OCU,SECC and power modules.
AEGEN Certification
We have a special team for developing and design control system as well as industrial design of cabinets . We have CE and Rohs and we can support our clients to get their certificate on basis of ours.
AEGEN Technical Support
AEGEN supplies 24/7 free on-line technical support for our clients ,when needed we can hold video conferences to help customers solve problems on their spot and will not leave problems to the next day.
Sincerely welcome to contact us for detail inquiries and let’s get a win-win together.
The RCMU is ideally suited for measuring both AC and DC residual currents. It effectively identifies various earth fault currents when combined with charge controllers and monitoring modules. Furthermore, this leakage detection unit continuously monitors for specific thresholds, including 6mA of DC and 30mA of AC residual current. Consequently, if any fault occurs, it immediately signals the Smart EVSE controller. Therefore, it provides a crucial layer of safety for the entire charging system. For more detailed information about our EV charger controllers, please feel free to contact AEGEN directly.
