On-board charger OBC 22K
Compact and efficient high-voltage charging.

Thanks to the state-of the art SiC switching technology, the REFUdrive on-board charger is particularly efficient and achieves an efficiency of over 98 %. The device is water cooled, it allows a very wide ambient temperature range. The device contains a galvanic separation.

Flexibly scalable and configurable.

The on-board chargers can be configured in parallel and are therefore scalable. In pair mode, two on-board chargers share a one 63 A/400VAC inlet. The operation via an AC charging wallbox is possible in accordance with EN 61851-1:2011. As an option the on-board charger can also be connected in parallel up to 8 units and thus scaled to higher charging power.

The REFUdrive on-board charger is equipped with the interfaces Modbus, CANopen and Ethernet. Thus it is flexibly controllable and configurable. The charger can be controlled remotely via the diagnosis software.


  • Non-road mobile machinery (NRMM)
  • Construction equipment
  • Commercial vehicles
  • Public transportation
  • Municipal vehicles

Your advantages in brief

  • Compact
  • Highly efficient thanks to SiC semiconductors
  • Compatible with various battery types and AC wallboxes

Important data at a glance

AC voltage range 3-phase (V) 360...480
Max. AC phase current (A) 32
DC voltage range (V) 420...800
Max DC charging current (A) 40
Max DC charging power (kW) 22
Dimensions LxWxH (mm) 520 × 350 × 100
Weight (kg) <15

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