Electrical Protections in AC
Filter and sort
What are AC Electrical Protections?
The AC Protections collection includes circuit breakers, residual current devices, and surge arresters for the alternating current side of a PV system (inverter output, branch circuits, and main distribution).
Advantages and limitations
- Personal safety through appropriate residual current devices.
- Equipment protection against overloads, short circuits, and overvoltages.
- Limitation: select the appropriate tripping curve, rating, sensitivity, and breaking capacity for the installation.
Applications
- Grid-tied self-consumption and hybrid systems.
- Protection of branch circuits to critical loads.
How to choose
- Rate circuit breakers by In and curve (B/C/D) according to load type.
- Select residual current devices AC/A/F/B according to the inverter and present harmonics.
- Coordinate SPD with the grid and location (type II in secondary panel, I+II at main distribution when applicable).
Specifications (indicative)
| ICU/ICN | Breaking capacity according to grid |
| Residual current devices | AC/A/F/B and mA sensitivity |
| SPD | Type II/III, suitable Uc and Imax |
| Installation | DIN mounting in distribution boards |
Related
Coordinate with DC Protections and use suitable Cables and Terminals. More in Electrical Material.
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