The Harvia C260 control unit consists of two separate parts: a control unit and a 2-group power unit. There are two versions of the power unit so the control unit can be used with heaters that have different power output levels.
Power units that are equipped to handle smaller power output come with 16 A circuit breakers which allows them to control sauna heaters with up to 22 kW of power output (for instance two 11 kW heaters or one 20 kW heater).
The more powerful power units that come with 25 A circuit breakers can control sauna heaters with up to 34 kW of power output.