EVSE-C-3x32A Shipped
Edge EV Charger controller
AC charge controller board for one Mode 3 charge point, up to 3×32 A (22 kW), with integrated relay drive, per-phase current and voltage metering, and Modbus RTU control. The board inside most EdgeTech-based chargers since 2021.
In short
One board, one charge point. The EVSE-C-3x32A talks to the car over the control pilot, drives the contactor, measures current and voltage on each phase, and reports everything over Modbus RTU. Put it in an enclosure with a contactor, an MCB, an RCD and (for DC leakage) the EVSE-X-DCD module, and you have a Mode 3 AC charger.
It runs on its own, at a static limit of 16 A or 32 A. Connected to a site controller it becomes a dynamically limited charge point: the controller writes a new current limit every second, and the board falls back to a safe state if those writes stop.
- Price
- € 125 excl. VAT
- CAD
- STEP and drawing: edgetech.eu/cad/evse-c-3x32a.step
Key facts
| Specification | Value |
|---|---|
| Charging | IEC 61851-1 Mode 3, 1-phase or 3-phase, 6–32 A continuous, max 3×32 A (22 kW) |
| Advertised maximum | 16 A without jumper, 32 A with jumper; remotely limited per second over Modbus (register 0x0201) |
| Microcontroller | 8-bit microcontroller, 16 MHz, bare-metal C firmware (open source) |
| Metering | On-board per-phase current and voltage measurement, session and lifetime energy in 1/256 kWh steps. Not MID certified. |
| Switching | Integrated relay drive for the charge contactor; stuck-relay detection; earth, neutral and L1 self-test at every boot |
| Fieldbus | Modbus RTU slave over RS485, 9600 8N1 (19200 with EVSE-SC-02), factory address 1 (answers only after a state change) |
| Bus cable | 3 × 0.75 mm² multi-core (stranded). No solid-core cable and no raw Ethernet cable in the terminals; Ethernet only with RJ45 connectors (adapter board on request) |
| Failsafe | No Modbus message for 2 s → safe mode; internal temperature 62 °C → limit to 10 A, higher → charging off |
| DC leakage protection | 6 mA DC-to-PE sensor (EVSE-X-DCD, IEC 62955) included with every controller; trip reported as error bit 5 (value 32) |
| Cable and lock | Fixed cable or Type 2 socket; PP resistor read for cable rating; lock port for the EVSE-X-CL cable lock driver, with lock/unlock feedback |
| Signalling | Onboard RGB LED or addressable LED strip (36 LEDs); CP disconnect for EV wake-up per IEC 61851-23 Ed. 2 |
| Supply | 90–300 V AC, 50 Hz, 3 W |
| Dimensions | 168 × 122 × 25 mm |
| Enclosure rating | IP00 (bare board, for installation in an enclosure), Class I |
| CE | Declaration 2022-001 EVSE-C-01: LVD 2014/35/EU, EMC 2014/30/EU, RoHS 2011/65/EU. Updated declaration to EN IEC 61851-1:2019 and EN IEC 61851-21-2:2021 soon |
| Made in | Europe |