Current Sensor

ES201 Series Residual Current Sensor｜Fluxgate-Based DC/AC Current Detection

Global Compliance & Embedded Self-Check for EV Charging Safety

Next-Generation Leakage Current Protection

The ES201 series residual current sensor revolutionizes safety in high-voltage systems with advanced fluxgate technology.

 Engineered for high-precision DC current detection across AC/pulsating DC/smooth DC/high-frequency currents, it surpasses traditional Hall Effect Sensors in accuracy. 

Integrated self-diagnosis and logical judgment meet stringent A+6/B-type protection standards, making it the preferred kemet residual current sensor alternative for global EV infrastructure.

Critical Safety Features

• Fluxgate Precision Architecture
  Detects μA-level leakage currents - 10× more sensitive than conventional DC Current Sensors

• Real-Time Self-Inspection
  Continuously monitors chip health, ensuring reliability beyond basic AC Current Sensors

• Digital Output & PCB Integration
  Simplifies circuit design versus bulky Rogowski Current Sensors

• Multi-Standard Compliance
  Certified under IEC 62955, GB/T 22794, UL 2231-2, and 8+ global protocols

Global Market Adaptability

▸ China : GB/T 18487 / GB/T 41589
▸ EU : IEC 62423 / IEC 61851
▸ North America : UL 2231-2
Eliminates re-design costs for cross-border charging equipment

Targeted Applications

EV Charging Ecosystems
・Portable Chargers (IC-CPD)
Enables Mode 2 charging with <1% false triggering in humid environments
・Wallbox/AC Charging Piles
Replaces electromechanical solutions in Mode 3 systems, reducing footprint by 60%
・DC Fast Chargers
Monitors 200A+ currents with 0.5% linearity error

Industrial Safety Systems
・Ground fault detection in solar inverters
・Medical equipment leakage monitoring
・Uninterruptible power supplies (UPS)

Why Choose ES201?

✅ Future-Proof Compliance
Ready for evolving IEC 61008-2 amendments
✅ Plug-and-Play Integration
PCB-mountable design slashes installation time by 70% vs. wired sensors
✅ EMC Immunity
Withstands 100kV/μs transient noise - ideal for Industrial Sensing Solutions
✅ Cross-Technology Advantage
Combines fluxgate accuracy with CT reliability, outperforming standard Precision Measurement Sensors

Engineering Insight: For 3-phase EVSE systems, pair with our arc-fault detectors to achieve SIL-3 safety rating.

Ferrtx is dedicated to setting a high bar of excellence for industries integrating magnetics technologies in our Residual Current Sensor products.