On-board charger OBC 22K
Compact and efficient high-voltage charging up to 850 Volt.
Thanks to the state-of the art SiC switching technology, the REFUdrive on-board charger is particularly efficient and achieves an efficiency of over 96 %. 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 and Ethernet. Thus it is flexibly controllable and configurable. The charger can be controlled remotely via the diagnosis software.
Applications
- 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, AC wallboxes and DC charging stations
- Up to 850 VDC charging voltage
- 3-phase and single phase inlet
- Liquid cooling
- Wide temperature range from -30°C to +60°C
Most important data at a glance
OBC 22K-450 | OBC 22K-800 | OBC 22K-850 | |
AC voltage range 3-phase | 360 - 480 V | 360 - 480 V | 360 - 480 V |
Max. AC phase current | 32 A | 32 A | 32 A |
DC voltage range | 200 – 450 V | 420 – 800 V | 550 – 850 V |
Max. DC charging current | 70 A | 40 A | 32 A |
Max. DC charging power | 22 kW | 22 kW | kW |
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