Residual-current monitoring unit

The inverter does not require an external residual-current device when operating. If local regulations require the use of a residual-current device, the following must be observed:

• The inverter is compatible with type B residual-current devices with a rated residual current of 1100 mA or higher (for information on how to select a residual-current device, see Technical Information "Criteria for Selecting a Residual-Current Device" at www.SMA‑Solar.com). Each inverter in the system must be connected to the utility grid via a separate residual-current device.

• When using residual-current devices with a lower rated residual current, there is a risk of false tripping of the residual-current device, depending on the system design.