WallboxeM4 Twin Extender
The Wallbox eM4 Twin Extender is a EV charger with max. charging power (AC) 22 kW, phases 3 and connector Type 2 socket.1
Key figures
Technical specifications
| General | |
|---|---|
| Connector | Socket (Type 2)1 |
| Number of outlets | 21 |
| Min. operating temperature | -25 °C1 |
| Performance | |
| Max. charging power (AC) | 22 kW1 |
| Electrical | |
| Phases | 31 |
| Max. current per phase | 32 A1 |
| Connectivity & smart | |
| Wi-Fi | Yes1 |
| Ethernet | Yes1 |
| 4G/LTE | No1 |
| RFID card reader | Yes1 |
| Dynamic load balancing | Yes1 |
| Safety & metering | |
| MID-certified meter | Yes1 |
| RCD protection | Type A1 |
| Built-in 6 mA DC leakage detection | Yes1 |
| IP rating | IP551 |
| IK rating | IK101 |
| Dimensions & weight | |
| Width | 428 mm1 |
| Height | 516 mm1 |
| Depth | 145 mm1 |
| Weight | 10.5 kg1 |
Variants1
The same model in several variants. The specifications above apply to all variants; this table shows what differs.
| Variant | Part number | Eichrecht compliant |
|---|---|---|
| RCCB | 100000326 | No |
| RCCB, calibration law compliant | 100000320 | Yes |
| RCCB, with shutter | 100000318 | No |
| RCBO, with shutter | 100000322 | No |
| RCBO | 100000324 | No |
Manufacturer documentation
- Product page
- Datasheet / specifications — Wallbox eM4 Single / Twin – Technical Data Sheet – Wallbox_Datasheet_eM4_EN_b (04/25)
External links to Wallbox's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.
Compare with
Frequently asked questions
What is the max. charging power (AC) of the Wallbox eM4 Twin Extender?
The max. charging power (AC) of the Wallbox eM4 Twin Extender is 22 kW.1
What is the phases of the Wallbox eM4 Twin Extender?
The phases of the Wallbox eM4 Twin Extender is 3.1
Which connector does the Wallbox eM4 Twin Extender use?
The connector of the Wallbox eM4 Twin Extender is Type 2 socket.1
Does the Wallbox eM4 Twin Extender have dynamic load balancing?
Yes, the Wallbox eM4 Twin Extender has dynamic load balancing.1
Sources
- Wallbox eM4 Single / Twin – Technical Data Sheet, Wallbox_Datasheet_eM4_EN_b (04/25) — Wall Box Chargers S.L. · accessed 27 Sept 2026