
1R20 Series
1R20 Series Type A + DC 6mA RCD Sensor
Digital residual current sensor for AC EV charging stations, designed for Type A + DC 6mA detection requirements.
View DetailsEV Charging Safety Components
Residual current detection for AC chargers, wallboxes, and Mode 2 / Mode 3 charging systems.

Product Families
Digital-output sensors, integrated transformers, and magnetic cores for EV charging designs.

1R20 Series
Digital residual current sensor for AC EV charging stations, designed for Type A + DC 6mA detection requirements.
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2R4Z
Type A + DC 6mA RCD sensor with integrated voltage and current transformers for EV charging applications.
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3R14X
Compact Type A + DC 6mA residual current sensor for AC EV charger safety detection.
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4R2Z
Type A + DC 6mA RCD sensor for European Mode 2 EV charging devices and AC charging applications.
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5R15Z
Type A + DC 6mA RCD sensor used in GB-standard EV charging pile applications.
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6R2Z
Type A + DC 6mA residual current sensor with integrated current transformer.
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CT1719
A+6 leakage detection magnetic core with integrated current transformer, used with the ILM2112TQC chip.
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CT1836
Compact A+6 leakage detection magnetic core designed for use with the ILM2112TQC residual current detection IC.
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CT2728
A+6 leakage detection magnetic core with an integrated 32A current transformer for EV charging equipment.
View DetailsRepresented Product Line

From current sensing to power switching — Power MOSFET, SiC, IGBT, and GaN families.
Choose by Application
Pick your charger architecture first, then confirm current, layout, and standard with us.
IC-CPD / portable EV charger
Start here for compact controller layouts where residual current detection must fit inside a portable charging device.
Use 4R2Z for compact module layouts; consider 2R4Z when integrated VT/CT functions help simplify the design.
Wallbox / AC charging station
For AC charger controllers that need Type A + DC 6mA residual current detection in Mode 3 platforms.
2R4Z is useful for integrated sensing; 1R20 Series is a broad fit for Mode 3 charger platforms.
GB/T AC charging pile
For GB-standard AC charging pile projects where the residual current detection module sits inside the charger safety loop.
5R15Z is the primary starting point for GB-standard AC charging pile applications.
Higher-power Mode 3 AC charger
For larger conductor paths and three-phase AC charger architectures that need Type A + DC 6mA detection.
Discuss conductor layout and rated current early so the proper 1R20 Series variant can be selected.
Integrated sensing block
For designs that benefit from current transformer integration or fewer separate magnetic components around the controller.
6R2Z provides an integrated current transformer; 2R4Z also integrates voltage and current transformer functions.
Custom leakage detection circuit
For teams that prefer a solution-level architecture using an external leakage detection chip with a magnetic core.
CT1719 is a starting point for ILM2112TQC-based custom circuit evaluation.
Engineering Advantages
Compact PCB integration, stable detection, standards-driven safety.
Clean output for controller integration and safety logic.
On-board self-check for platforms that verify safety regularly.
Fits common embedded charger controller power rails.
Stable sensing across outdoor and enclosure environments.
Reliable in electrically noisy, compact PCB layouts.
Selected models build in the current transformer.
Applications
5R15Z is suited to GB-standard AC charging piles that require Type A + DC 6mA residual current detection around the charger power path.
4R2Z is shown on a European Mode 2 charger control board where compact residual current detection is required within the portable charger architecture.
2R4Z integrates voltage and current transformer functions for Mode 2 charging designs that need a compact residual current detection solution.
2R4Z is shown in a European Mode 3 AC charger board where residual current detection and integrated sensing functions are required.
The ILM211T + CT1836 combination provides a flexible chip-and-magnetic-core leakage detection architecture for European Mode 3 charger designs.
Manufacturing & Support
We support charger makers with model selection, datasheets, and detection testing.



Frequently Asked Questions
The questions engineers and sourcing teams ask first. Contact us for model-specific guidance.
Ask an Engineering QuestionThe featured EV charging sensor series is designed for Type A residual current plus smooth DC residual current detection up to the 6 mA threshold. Confirm the exact trip-current window in the selected model datasheet.
The listed digital-output RCD sensor models use a 5 V supply. Integration requirements vary by model, so the controller interface, self-test circuit, and output logic should be checked during model selection.
Products are positioned for EV charging designs involving IEC 62955, IEC 62752, IEC 61851, GB/T 40820, and GB/T 22794. Final compliance belongs to the complete charging product and its certification program.
Start with charger mode, target market, rated current, conductor path, available PCB space, integration level, and output requirements. EVsense can review these inputs and recommend a model for sample evaluation.
Yes. Send the target model or application details through the inquiry form. Sales will confirm sample availability, minimum order quantity, pricing, and current lead time for the requested configuration.