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Family of Analog
Residual Current Sensors
iFluxgate® Technology, Precise Current Measurement for Safe Charging
Product Family Overview
Magtron’s Analog Residual Current Sensors are designed to provide real-time, precise measurement of both AC and DC leakage currents in EV charging systems. Using the proprietary iFluxgate® technology, our sensors ensure that your charging infrastructure remains safe and compliant with global standards. Whether you’re installing a home charger or operating a public charging station, these sensors deliver unmatched performance and reliability.
Applications
Home EV Charging Stations
Ideal for use in home charging systems, where accurate leakage detection is critical to avoid electrical hazards
Public Charging Stations
Our sensors provide robust protection for public charging stations, ensuring the safety of both the charging equipment and the vehicle.
Energy Storage Systems
Perfect for energy storage systems, ensuring that any residual current leakage is detected before it can cause damage
Technical Specifications
Magtron’s Analog Residual Current Sensors are available in a range of models tailored to different power segments and standards. Below is a detailed list of the key specifications for our sensors:
| Series | Model | Package style | Certification/ | Rated current [mA] | Maximum current [mA] | Overcurrent | Operating | Accuracy % (25℃) | Applicable |
|---|---|---|---|---|---|---|---|---|---|
| SM Series | RCMU101SM1-2AI |  | CE/UL | 300mA | 500mA | 20A | -40℃~105℃ | 2 | 0–4kW |
| RCMU101SM2-AI |  | CE/UL | 300mA | 500mA | Customize | -40℃~105℃ | 2 | 0–4kW | |
| RCMU101SM3-6AI |  | CE/UL | 300mA | 500mA | 42A | -40℃~105℃ | 2 | 0–10kW | |
| RCMU101SM3-6FI |  | CE/UL | 510mA | 850mA | 42A | -40℃~105℃ | 2 | 0–10kW | |
| RCMU101SM4-2AI |  | CE/UL | 300mA | 500mA | 20A | -40℃~105℃ | 2 | 0–4kW |
| Series | Model | Package style | Certification/ | Rated current [mA] | Maximum current [mA] | Overcurrent | Operating | Accuracy % (25℃) | Applicable |
|---|---|---|---|---|---|---|---|---|---|
| SN Series | RCMU101SN-2P12C-5NB |  | CE/UL | 1020mA | 1700mA | 70A | -40℃~105℃ | 2 | 0–15kW |
| RCMU101SN-2P2A-5N |  | CE/UL | 300mA | 500mA | 20A | -40℃~105℃ | 2 | 0–4kW | |
| RCMU101SN-2P12A-5N |  | CE/UL | 300mA | 500mA | 70A | -40℃~105℃ | 2 | 0–15kW | |
| RCMU101SN-2P4A-5S |  | CE/UL | 300mA | 500mA | 32A | -40℃~105℃ | 2 | 0–7kW | |
| RCMU101SN-3P6A-5S |  | CE/UL | 300mA | 500mA | 42A | -40℃~105℃ | 2 | 0–36kW | |
| RCMU101SN-3P6C-5S |  | CE/UL | 1020mA | 1700mA | 42A | -40℃~105℃ | 2 | 0–36kW |
| Series | Model | Package style | Certification/ | Rated current [mA] | Maximum current [mA] | Overcurrent | Operating | Accuracy % (25℃) | Applicable |
|---|---|---|---|---|---|---|---|---|---|
| SN Series | RCMU101SN-3P16A-5S |  | CE/UL | 300mA | 500mA | 80A | -40℃~105℃ | 2 | 30–50kW |
| RCMU101SN-4P16A-5S |  | CE/UL | 300mA | 500mA | 80A | -40℃~105℃ | 2 | 0–80kW | |
| RCMU101SN-4P16C-5S |  | CE/UL | 1020mA | 1700mA | 80A | -40℃~105℃ | 2 | 0–80kW | |
| RCMU101SN-A-5S |  | CE/UL | 300mA | 500mA | Customize | -40℃~105℃ | 2 | / | |
| RCMU101SN-C-5S |  | CE/UL | 1020mA | 1700mA | Customize | -40℃~105℃ | 2 | / | |
| RCMU101SN-D-5S |  | CE/UL | 1500mA | 2000mA | Customize | -40℃~105℃ | 2 | / | |
| RCMU101SN-G-6C |  | CE/UL | 3000mA | 5000mA | Customize | -40℃~105℃ | 1.5 | / | |
| RCMU101SN-4P28G-6C |  | CE/UL | 3000mA | 5000mA | 150A | -40℃~105℃ | 1.5 | 0–150kW | |
| RCMU101SN-3P28G-6C |  | CE/UL | 3000mA | 5000mA | 150A | -40℃~105℃ | 1.5 | 0–150kW |
Certifications
Magtron’s sensors meet the highest standards for safety and performance, including certifications such as IATF 16949. These certifications guarantee that our products are compliant with both international and regional safety regulations, providing peace of mind for customers worldwide.
Product Benefits
Our Analog Residual Current Sensors offer several advantages, ensuring that your charging infrastructure is not only safe but also highly reliable and efficient:
High Precision Detection
The iFluxgate® technology offers precise current measurement, ensuring that even the smallest current leakage is detected, preventing potential electrical hazards
Modular Design
The sensors are designed for easy installation and maintenance, making them a perfect choice for both residential and commercial charging stations
Robust and Reliable
Built to last, Magtron’s sensors are capable of operating under harsh conditions, providing continuous protection for your charging equipment
Automotive-Grade Quality
Certified processes and trusted collaborations that power reliable EV-charging safety.
IATF 16949
Automotive-grade QMS with robust change control, APQP/PPAP, and full traceability for consistent sensor performance.
BOSCH's Partner
Cooperation with Bosch Germany on engineering validation and applications, aligning our sensors with global OEM requirements.
Choosing the Right Analog Residual Current Sensor
In the ever-evolving world of electrical systems, ensuring the safety and efficiency of your infrastructure is paramount. Magtron’s Analog Residual Current Sensors (RCS) provide an innovative solution to measure and detect residual currents in both AC and DC systems. These sensors are essential components in systems like electric vehicle (EV) chargers, solar inverters, and energy storage systems, where accurate current leakage detection is crucial for preventing safety hazards and ensuring system reliability.
This guide aims to help you understand the selection process for Analog Residual Current Sensors based on your application needs. By considering factors such as current capacity, response time, installation requirements, and environmental conditions, you can choose the perfect sensor model for your specific project.
Where Analog Residual Current Sensors Are Used
Analog residual current sensors are widely used in multiple industries, particularly in applications involving electrical energy systems. Their primary function is to detect and monitor residual leakage currents that could cause electrical hazards. Below are the typical areas where these sensors are used:
Electric Vehicle (EV) Charging Stations
Ensuring the safety of charging systems by detecting leakage currents, especially in public or high-traffic locations.
Solar Inverters
Used in photovoltaic systems to monitor leakage in both AC and DC circuits, ensuring optimal performance and preventing faults.
Energy Storage Systems
Applied to monitor leakage currents in storage systems to avoid potential damage or safety issues.
Ground Fault Detection
Critical in detecting faults in ground systems and preventing potential harm.
These applications require sensors that provide high precision, quick response, and long-term stability in various operational environments.
Factors to Consider When Choosing Analog Residual Current Sensors
When selecting the right sensor for your application, consider the following factors:
Current Sensitivity and Accuracy
Different applications require different levels of current sensitivity. The RCMU101 series, for instance, offers sensors with 6mA DC accuracy for sensitive applications, such as inverters or smaller-scale charging stations. If your application involves larger power systems, you may need a sensor with a higher current range, such as 42A.
Response Time
For critical applications such as EV charging stations and solar inverters, rapid detection of leakage currents is essential to avoid damage. Our sensors have a quick response time, ensuring that any leakage is detected and acted upon in real-time, thus preventing any electrical damage or safety hazards.
Environmental Conditions
The operating temperature and environmental factors are crucial in sensor selection. Our sensors are designed to perform in a wide temperature range of -40°C to 105°C, making them suitable for diverse climates and installation environments.
Voltage Range and Power Requirements
Choosing a sensor with the right voltage and power requirements is key for compatibility with your existing system. Magtron’s sensors offer models with 5V power supply, which is ideal for low-power applications such as residential EV chargers.
Key Features of Magtron Analog Residual Current Sensors
Magtron’s sensors come with several features that set them apart 
from other products in the market:
iFluxgate® Technology
Our proprietary iFluxgate® technology provides superior accuracy and sensitivity in detecting AC and DC residual currents. This innovative technology allows for highly precise current measurement and ensures the long-term stability of the system.
Modular Design
With modular components and PCB plug-in installation, these sensors are designed for easy integration and maintenance, reducing installation complexity and time.
Self-Check Functionality
A unique feature of Magtron’s sensors is the Self-Check function, ensuring the sensors’ operational integrity by continuously verifying their performance. This helps reduce downtime and maintenance costs.
Low-zero Drift
The low-zero drift feature ensures that the sensors’ accuracy remains stable over time, even in harsh environments or over prolonged usage periods.
Key Features of Magtron Analog Residual Current Sensors
Magtron’s sensors come with several features that set them apart from other products in the market:
iFluxgate® Technology
Our proprietary iFluxgate® technology provides superior accuracy and sensitivity in detecting AC and DC residual currents. This innovative technology allows for highly precise current measurement and ensures the long-term stability of the system.
Modular Design
With modular components and PCB plug-in installation, these sensors are designed for easy integration and maintenance, reducing installation complexity and time.
Self-Check Functionality
A unique feature of Magtron’s sensors is the Self-Check function, ensuring the sensors’ operational integrity by continuously verifying their performance. This helps reduce downtime and maintenance costs.
Low-zero Drift
The low-zero drift feature ensures that the sensors’ accuracy remains stable over time, even in harsh environments or over prolonged usage periods.
How to Choose the Right Model
Based on your specific requirements, here’s a guide to selecting the right model:
For Single-phase Inverters
For single-phase photovoltaic inverters, we recommend the RCMU101SM1-2AI model. It features high precision, a 5V power supply, and a 500mA current range, making it ideal for smaller-scale residential installations.
For Three-phase Inverters
For three-phase inverters, the RCMU101SN-4P series is perfect. These sensors offer higher current capacities, such as 42A, and can handle high-power systems in industrial and commercial solar installations. Their modular design makes them highly adaptable for various installations.
For DC Leakage Detection
For DC systems, our RCMU101SN-4P models are designed to detect leakage in DC circuits in energy storage systems, offering a robust solution for large-scale systems with up to 5000mA maximum current capacity.
Installation and Maintenance
Installing Magtron’s Analog Residual Current Sensors is straightforward due to their modular design and PCB mounting system. These sensors are designed for ease of integration with existing solar inverters, energy storage systems, and EV chargers.
Magtron’s sensors also feature self-test functions, which allow for easy monitoring of sensor performance, reducing the need for frequent maintenance checks.
Compliance with International Standards
Magtron’s sensors are fully compliant with international safety and quality standards, ensuring that they meet the regulatory requirements of various regions. Some of the standards our products comply with include:
EN 50178
IEC 60950-1
UL 1741
UL 508
IEC 61000-4-5
VDE 0126-1-1
These certifications guarantee that our sensors are not only reliable but also meet the highest safety standards for both residential and commercial applications.
Compliance with International Standards
Magtron’s sensors are fully compliant with international safety and quality standards, ensuring that they meet the regulatory requirements of various regions. Some of the standards our products comply with include:
EN 50178
IEC 60950-1
UL 1741
UL 508
IEC 61000-4-5
VDE 0126-1-1
These certifications guarantee that our sensors are not only reliable but also meet the highest safety standards for both residential and commercial applications.
Conclusion
Selecting the right Analog Residual Current Sensor for your system is critical to ensuring long-term safety and performance. Magtron’s iFluxgate® technology offers the most reliable, accurate, and efficient solution for detecting leakage currents in a variety of applications, from solar inverters to EV charging stations. Whether you are dealing with single-phase or three-phase systems, Magtron has a solution that fits your needs.
For more detailed assistance in selecting the perfect sensor, or if you have any questions, feel free to contact our support team.
