Residual Current Sensors for EV Chargers

Advanced Leakage Protection for Modern EVSE
The EKCA Series is explicitly designed for electric vehicle supply equipment (EVSE). Operating on a standard 5VDC supply, these sensors offer reliable and compact residual current monitoring for wallboxes, portable chargers, and public AC charging stations.

To match different safety standards and system architectures, the series is divided into two core versions:

• MD Version (DC Detection Only):
  Provides precise DC 6mA residual current detection. Ideal for EV chargers that already have separate Type A AC protection integrated into the system.

• PD Version (Comprehensive AC+DC Detection):
  Delivers combined DC 6mA + AC 30mA residual current detection. Perfect for advanced charger designs requiring robust, all-in-one leakage protection equivalent to Type B characteristics.

Core Advantages

• lexible Power Range
  Supports single-phase 3.6kW and three-phase 11/22kW EV chargers with overcurrent capabilities up to 80A.

• Versatile Installation
  Available in multiple structures including PCB-mounting (Through hole / Copper jumper), Cable-mounting, and Enclosure-mounting.

• Low Power Consumption
  Operates efficiently on a standard 5VDC (±3%) single power supply, simplifying PCBA power design.

• Built for Compliance
  Designed to help EV charger manufacturers meet strict electrical safety requirements efficiently.

Typical Applications

• Residential wallbox chargers

• Commercial AC charging stations

• Portable EV chargers

• Mode 2 charging devices

• EVSE control systems

• Power conversion systems

• Ground fault detection applications

Technical Data

Product selection form

Review our comprehensive model matrix below to find the exact mounting style, detection threshold, and power rating for your EV charger design.
 

Model	Image	Mounting Type	Detection Threshold	Operating Voltage	Overcurrent Capability	Supported Charging Power
EKCA-01-MD		PCB-mounting (Copper jumper)	DC 6mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-01-PD		PCB-mounting (Copper jumper)	DC 6mA / AC 30mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-03-MD		PCB-mounting (Horizontal Through hole)	DC 6mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-03-PD		PCB-mounting (Horizontal Through hole)	DC 6mA / AC 30mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-06-MD		Cable-mounting / PCB-mounting	DC 6mA	5VDC ±3%	32/80A	Three-phase 11/22kW
EKCA-06-PD		Cable-mounting / PCB-mounting	DC 6mA / AC 30mA	5VDC ±3%	32/80A	Three-phase 11/22kW
EKCA-07-MD		Cable / PCB / Enclosure-mounting	DC 6mA	5VDC ±3%	32/80A	Three-phase 11/22kW
EKCA-07-PD		Cable / PCB / Enclosure-mounting	DC 6mA / AC 30mA	5VDC ±3%	32/80A	Three-phase 11/22kW
EKCA-08-MD		PCB-mounting	DC 6mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-08-PD		PCB-mounting	DC 6mA / AC 30mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-09-MD		PCB-mounting (Horizontal Through hole)	DC 6mA	5VDC ±3%	16A	Single-phase 3.6kW
EKCA-09-PD		PCB-mounting (Horizontal Through hole)	DC 6mA / AC 30mA	5VDC ±3%	16A	Single-phase 3.6kW
EKCA-10-MD		PCB-mounting (Horizontal Through hole)	DC 6mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-10-PD		PCB-mounting (Horizontal Through hole)	DC 6mA / AC 30mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-16-MD		PCB-mounting (Horizontal Through hole)	DC 6mA	5VDC ±3%	32/80A	Three-phase 11/22kW
EKCA-16-PD		PCB-mounting (Horizontal Through hole)	DC 6mA / AC 30mA	5VDC ±3%	32/80A	Three-phase 11/22kW
EKCA-18-MD		PCB-mounting	DC 6mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-18-PD		PCB-mounting	DC 6mA / AC 30mA	5VDC ±3%	32/40A	Three-phase 11/22kW
EKCA-20-MD		Cable / PCB / Enclosure-mounting	DC 6mA	5VDC ±3%	32/80A	Three-phase 11/22kW
EKCA-20-PD		Cable / PCB / Enclosure-mounting	DC 6mA / AC 30mA	5VDC ±3%	32/80A	Three-phase 11/22kW
EKCA-25-MD		PCB-mounting	DC 6mA	5VDC ±3%	32A	Three-phase 11/22kW
EKCA-25-PD		PCB-mounting	DC 6mA / AC 30mA	5VDC ±3%	32A	Three-phase 11/22kW