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Leading Manufacturer of
Residual Current Sensors
For EV Charging

Build safer EV chargers faster with high-precision residual current sensors, reference designs, and hands-on engineering support. IATF 16949 certified for automotive-grade reliability.

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Brands That Trust Us

GEELY
BYD
TOYOTA
Global Tier-1s

GEELY Group

For 7–22 kW AC chargers in homes and workplaces, Magtron’s iFluxgate RCMUs deliver 6 mA DC detection with built-in self-test to reduce nuisance trips and ease IEC 61851/62955 compliance. Compact design simplifies PCB layout and accelerates time-to-market.

BYD

For bus and last-mile fleets, our iFluxgate RCMUs combine AC leakage detection with high-reliability DC contact components for fast isolation. Standardized protection enables remote checks, reduces maintenance, and supports scalable depot expansion.

TOYOTA

For dealer-deployed Level 1/2 wall units and portable IC-CPD cords, our slim UL-ready RCMUs support CCID20 and 6 mA DC detection. Flexible outputs ensure straightforward integration, enabling rapid, compliant rollouts across multiple sites.

IATF 16949 Certified

We are proud to be IATF 16949 certified — the global quality management standard for the automotive industry. This certification ensures our manufacturing processes meet the highest standards in quality, consistency, and continuous improvement, making our sensors a trusted choice for EV charging systems and smart mobility solutions worldwide.

Our Core Technologies

Self-Developed Chips

Our RCMUs use Magtron’s self-developed iFluxgate® sensing chip paired with a proprietary processing SoC. This in-house silicon stack integrates self-test and fault logic into a compact 5V module, reducing BOM cost and simplifying EVSE design.

High-Precision Measurement

Based on iFluxgate technology, our sensors measure AC/DC, pulsed, and irregular residual currents with primary–secondary isolation, low offset, and fast response. Designed for precise 6 mA DC detection (Type A+6mA DC / Type B), minimizing nuisance trips.

Automotive-Grade Quality

Certified under IATF 16949 with robust change control, APQP/PPAP processes, and sustained R&D investment. Trusted collaborations ensure reliable, long-term performance in mission-critical EV charging applications.

Our Products

RCMU101SM/SN Series

RCMU101SM/SN Series

Analog Signal Output Type Sensor

  • • iFluxgate® magnetic flux gate technology
  • • AC/DC & irregular current measurement
  • • Primary-secondary isolation
  • • 6 mA DC detection
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Switching RCMU

Switching RCMU

Switch-Output Residual Current Sensor

  • • Self-developed SoC with self-test
  • • Ultra-small footprint
  • • For IC-CPD & AC charging piles
  • • Integrated logic judgment
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Current Sensor

MAGTRON Current Sensor

Open/Closed Loop Hall & Flux Gate

  • • AC/DC & pulse current sensing
  • • Isolated measurement
  • • High linearity & low drift
  • • Industrial & EVSE applications
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RCMU Type B

RCMU Type B Sensor

High-Sensitivity DC Detection

  • • 6 mA DC + AC residual detection
  • • Compliant with IEC 62955
  • • For DC fast chargers
  • • Low temperature drift
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IC-CPD Sensor Module

IC-CPD Sensor Module

Portable Charger Protection

  • • UL-ready, compact design
  • • CCID20 & 6 mA DC support
  • • Plug-and-charge integration
  • • For Level 1/2 portable chargers
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100A Current Transformer

100A Current Transformer

High-Capacity Sensing

  • • 100A nominal current
  • • Open-loop Hall effect
  • • Low power consumption
  • • For high-power EVSE
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RCMU-SM Series

RCMU-SM Series

Analog Output Sensor

  • • 5V supply, analog output
  • • 6 mA DC detection threshold
  • • Low offset & drift
  • • For AC charging stations
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RCMU-SN Series

RCMU-SN Series

Switch Output Sensor

  • • Integrated fault logic
  • • Self-test capability
  • • Compact SMD package
  • • For embedded EVSE controllers
Learn More

Applications

EV Charging Stations

Our sensors are deployed in 7–22 kW AC chargers and high-power DC cabinets, providing reliable residual current monitoring to prevent electric shocks and ensure compliance with IEC 61851 and UL 2231 standards.

Portable IC-CPDs

Compact and UL-ready RCMUs are ideal for in-cable control and protection devices, supporting 6 mA DC detection and CCID20 for safe home and public charging.

Fleet & Depot Charging

For bus and delivery fleets, our sensors enable remote monitoring, fast fault isolation, and scalable protection layers to maximize uptime and safety.

Industrial Power Systems

Beyond EVSE, our current sensors are used in industrial automation, renewable energy, and smart grid applications requiring high-precision, isolated current measurement.

About EVSE Sensor

As a leading manufacturer of residual current sensors, EVSE Sensor is committed to advancing safety and reliability in electric vehicle charging infrastructure.

Our proprietary iFluxgate® technology and self-developed chips enable precise 6 mA DC detection, critical for preventing electric shocks in modern EVSE systems.

With IATF 16949 certification and partnerships with global automotive leaders like GEELY, BYD, and Toyota, we deliver automotive-grade quality and engineering support to help you build safer chargers — faster.

EVSE Sensor Manufacturing

Contact Us

Precision Magnetic Sensing for a Smarter Power Future

Phone (China)

+86-573-8266 0100

+86 18768312137

Email

info@evsesensor.com

Location

Jiaxing, Zhejiang, China

Berlin, Germany

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