Rules for the Connection of the Automatic Transfer Switching Device

Connection of the PV system

The automatic transfer switching device is not a distribution board for the PV system. You must also install the necessary protective devices for the PV system.

The PV system can be connected directly to the automatic transfer switching device.

Connection of the loads

The automatic transfer switching device is not a distribution board for the loads. You must additionally install the necessary protective devices for the loads. You may use suitable protective devices in the household distribution.

Make sure that the trigger conditions of the miniature circuit breakers in the household distribution match the installed battery-backup system in each case Miniature Circuit Breaker in the Household Distribution.

Dimensioning of the tie switch

Regardless of all-pole or non-all-pole disconnection, you must adjust the ampacity of the tie switch in accordance with the local requirements Certifications and Licenses. The tie switch in the automatic transfer switching device must have an ampacity that is designed for at least the operating range of the upstream fuse (for the ampacity of the tie switch, see the documentation of the automatic transfer switching device or the tie switch).

Regardless of all-pole or non-all-pole disconnection, you must adjust the ampacity of the tie switch in accordance with the local requirements Certifications and Licenses. The tie switch in the automatic transfer switching device must have an ampacity that is designed for at least the operating range of the upstream fuse (for the ampacity of the tie switch, see the documentation of the automatic transfer switching device).