Wallbox eM4 Twin Controller
The Wallbox eM4 Twin Controller is an EV charger with max. charging power (AC) 22 kW, 3 phases and connector Type 2 socket.1
Key figures
Rules in the UK
Home chargers sold in Great Britain must meet the smart charge point regulations (smart functionality, default off-peak charging).
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 | |
| OCPP | 1.5, 1.61 |
| Wi-Fi | Yes1 |
| Ethernet | Yes1 |
| 4G/LTE | Yes1 |
| 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 | 100000325 | No |
| RCCB, calibration law compliant | 100000319 | Yes |
| RCCB, with shutter | 100000317 | No |
| RCBO, with shutter | 100000321 | No |
| RCBO | 100000323 | 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
Similar models
Other brands, same type and a comparable size.
More from Wallbox
- Wallbox Commander 2 Max. charging power (AC): 22 kW
- Wallbox Copper SB Max. charging power (AC): 22 kW
- Wallbox eM4 Single Controller Max. charging power (AC): 22 kW
- Wallbox eM4 Single Extender Max. charging power (AC): 22 kW
- Wallbox eM4 Twin Extender Max. charging power (AC): 22 kW
- Wallbox Pulsar Max 22 kW Max. charging power (AC): 22 kW
Guides on EV chargers
- Choosing a home EV charger: power, tethered or untethered, and the features that matter
- Smart charging and EV tariffs: how to charge cheaply at home
- EV charger load balancing: protecting your main fuse and sharing power
- Installing a home EV charger: grants, DNO notification and what drives the cost
- Charging a company car at home: tax-free reimbursement, AER and MID meters
How we collect and check this data →
Frequently asked questions
What is the max. charging power (AC) of the Wallbox eM4 Twin Controller?
The max. charging power (AC) of the Wallbox eM4 Twin Controller is 22 kW.1
How many phases does the Wallbox eM4 Twin Controller use?
The Wallbox eM4 Twin Controller uses 3 phases.1
Which connector does the Wallbox eM4 Twin Controller use?
The connector of the Wallbox eM4 Twin Controller is Type 2 socket.1
Which OCPP version does the Wallbox eM4 Twin Controller support?
The Wallbox eM4 Twin Controller supports OCPP 1.5, 1.6.1
Sources
- Wallbox eM4 Single / Twin – Technical Data Sheet, Wallbox_Datasheet_eM4_EN_b (04/25) — Wall Box Chargers S.L. · accessed 27 Sept 2026